diff --git a/clients/client-accessanalyzer/runtimeConfig.browser.ts b/clients/client-accessanalyzer/runtimeConfig.browser.ts
index ec372020aa98..457cdaab2ece 100644
--- a/clients/client-accessanalyzer/runtimeConfig.browser.ts
+++ b/clients/client-accessanalyzer/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AccessAnalyzerClientConfig) => {
+export const getRuntimeConfig = (config: AccessAnalyzerClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-accessanalyzer/runtimeConfig.native.ts b/clients/client-accessanalyzer/runtimeConfig.native.ts
index 4d093d029311..368ef11b2677 100644
--- a/clients/client-accessanalyzer/runtimeConfig.native.ts
+++ b/clients/client-accessanalyzer/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AccessAnalyzerClientConfig) => {
+export const getRuntimeConfig = (config: AccessAnalyzerClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-accessanalyzer/runtimeConfig.shared.ts b/clients/client-accessanalyzer/runtimeConfig.shared.ts
index f7f45588b59c..2a9f15a981db 100644
--- a/clients/client-accessanalyzer/runtimeConfig.shared.ts
+++ b/clients/client-accessanalyzer/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { AccessAnalyzerClientConfig } from "./AccessAnalyzerClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AccessAnalyzerClientConfig) => ({
+export const getRuntimeConfig = (config: AccessAnalyzerClientConfig = {}) => ({
   apiVersion: "2019-11-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-accessanalyzer/runtimeConfig.ts b/clients/client-accessanalyzer/runtimeConfig.ts
index 5b2e0803219c..69fd1e67cb53 100644
--- a/clients/client-accessanalyzer/runtimeConfig.ts
+++ b/clients/client-accessanalyzer/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AccessAnalyzerClientConfig) => {
+export const getRuntimeConfig = (config: AccessAnalyzerClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-acm-pca/runtimeConfig.browser.ts b/clients/client-acm-pca/runtimeConfig.browser.ts
index f697bc7691fb..af43c2659052 100644
--- a/clients/client-acm-pca/runtimeConfig.browser.ts
+++ b/clients/client-acm-pca/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ACMPCAClientConfig) => {
+export const getRuntimeConfig = (config: ACMPCAClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-acm-pca/runtimeConfig.native.ts b/clients/client-acm-pca/runtimeConfig.native.ts
index 22356f998f11..b9e7c36a5894 100644
--- a/clients/client-acm-pca/runtimeConfig.native.ts
+++ b/clients/client-acm-pca/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ACMPCAClientConfig) => {
+export const getRuntimeConfig = (config: ACMPCAClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-acm-pca/runtimeConfig.shared.ts b/clients/client-acm-pca/runtimeConfig.shared.ts
index 05f24099b2a9..476bc878a94a 100644
--- a/clients/client-acm-pca/runtimeConfig.shared.ts
+++ b/clients/client-acm-pca/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ACMPCAClientConfig } from "./ACMPCAClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ACMPCAClientConfig) => ({
+export const getRuntimeConfig = (config: ACMPCAClientConfig = {}) => ({
   apiVersion: "2017-08-22",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-acm-pca/runtimeConfig.ts b/clients/client-acm-pca/runtimeConfig.ts
index ba4b39733f1a..f8dc3ba71811 100644
--- a/clients/client-acm-pca/runtimeConfig.ts
+++ b/clients/client-acm-pca/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ACMPCAClientConfig) => {
+export const getRuntimeConfig = (config: ACMPCAClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-acm/runtimeConfig.browser.ts b/clients/client-acm/runtimeConfig.browser.ts
index 0f4f5dc701d1..9c00aba4c847 100644
--- a/clients/client-acm/runtimeConfig.browser.ts
+++ b/clients/client-acm/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ACMClientConfig) => {
+export const getRuntimeConfig = (config: ACMClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-acm/runtimeConfig.native.ts b/clients/client-acm/runtimeConfig.native.ts
index bdefb51dd5ab..fc584a1bb774 100644
--- a/clients/client-acm/runtimeConfig.native.ts
+++ b/clients/client-acm/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ACMClientConfig) => {
+export const getRuntimeConfig = (config: ACMClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-acm/runtimeConfig.shared.ts b/clients/client-acm/runtimeConfig.shared.ts
index 0da4e1b7fdf7..9ddeeaca06b6 100644
--- a/clients/client-acm/runtimeConfig.shared.ts
+++ b/clients/client-acm/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ACMClientConfig } from "./ACMClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ACMClientConfig) => ({
+export const getRuntimeConfig = (config: ACMClientConfig = {}) => ({
   apiVersion: "2015-12-08",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-acm/runtimeConfig.ts b/clients/client-acm/runtimeConfig.ts
index 34ff7b225f82..fffec1dbe0d5 100644
--- a/clients/client-acm/runtimeConfig.ts
+++ b/clients/client-acm/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ACMClientConfig) => {
+export const getRuntimeConfig = (config: ACMClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-alexa-for-business/runtimeConfig.browser.ts b/clients/client-alexa-for-business/runtimeConfig.browser.ts
index a85aa3882700..183f7590d64e 100644
--- a/clients/client-alexa-for-business/runtimeConfig.browser.ts
+++ b/clients/client-alexa-for-business/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AlexaForBusinessClientConfig) => {
+export const getRuntimeConfig = (config: AlexaForBusinessClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-alexa-for-business/runtimeConfig.native.ts b/clients/client-alexa-for-business/runtimeConfig.native.ts
index 632a51d5007c..079c03cd82b5 100644
--- a/clients/client-alexa-for-business/runtimeConfig.native.ts
+++ b/clients/client-alexa-for-business/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AlexaForBusinessClientConfig) => {
+export const getRuntimeConfig = (config: AlexaForBusinessClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-alexa-for-business/runtimeConfig.shared.ts b/clients/client-alexa-for-business/runtimeConfig.shared.ts
index 19e68ce9d7a0..d5a9f9f09b0d 100644
--- a/clients/client-alexa-for-business/runtimeConfig.shared.ts
+++ b/clients/client-alexa-for-business/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { AlexaForBusinessClientConfig } from "./AlexaForBusinessClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AlexaForBusinessClientConfig) => ({
+export const getRuntimeConfig = (config: AlexaForBusinessClientConfig = {}) => ({
   apiVersion: "2017-11-09",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-alexa-for-business/runtimeConfig.ts b/clients/client-alexa-for-business/runtimeConfig.ts
index dffb80b9f567..7f8ac3ff3417 100644
--- a/clients/client-alexa-for-business/runtimeConfig.ts
+++ b/clients/client-alexa-for-business/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AlexaForBusinessClientConfig) => {
+export const getRuntimeConfig = (config: AlexaForBusinessClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-amp/runtimeConfig.browser.ts b/clients/client-amp/runtimeConfig.browser.ts
index 34a288436745..817ac63a667d 100644
--- a/clients/client-amp/runtimeConfig.browser.ts
+++ b/clients/client-amp/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AmpClientConfig) => {
+export const getRuntimeConfig = (config: AmpClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-amp/runtimeConfig.native.ts b/clients/client-amp/runtimeConfig.native.ts
index 73c04881cbc3..1a11de3ff3c9 100644
--- a/clients/client-amp/runtimeConfig.native.ts
+++ b/clients/client-amp/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AmpClientConfig) => {
+export const getRuntimeConfig = (config: AmpClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-amp/runtimeConfig.shared.ts b/clients/client-amp/runtimeConfig.shared.ts
index 3d86a96ffff2..71dda1051edd 100644
--- a/clients/client-amp/runtimeConfig.shared.ts
+++ b/clients/client-amp/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { AmpClientConfig } from "./AmpClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AmpClientConfig) => ({
+export const getRuntimeConfig = (config: AmpClientConfig = {}) => ({
   apiVersion: "2020-08-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-amp/runtimeConfig.ts b/clients/client-amp/runtimeConfig.ts
index eff7e277ddb4..14c9e37a3141 100644
--- a/clients/client-amp/runtimeConfig.ts
+++ b/clients/client-amp/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AmpClientConfig) => {
+export const getRuntimeConfig = (config: AmpClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-amplify/runtimeConfig.browser.ts b/clients/client-amplify/runtimeConfig.browser.ts
index 5293a17cfe23..fd0eb101ada0 100644
--- a/clients/client-amplify/runtimeConfig.browser.ts
+++ b/clients/client-amplify/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AmplifyClientConfig) => {
+export const getRuntimeConfig = (config: AmplifyClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-amplify/runtimeConfig.native.ts b/clients/client-amplify/runtimeConfig.native.ts
index f0b05d713b4c..b7e4d02bd3dd 100644
--- a/clients/client-amplify/runtimeConfig.native.ts
+++ b/clients/client-amplify/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AmplifyClientConfig) => {
+export const getRuntimeConfig = (config: AmplifyClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-amplify/runtimeConfig.shared.ts b/clients/client-amplify/runtimeConfig.shared.ts
index b68484771e1a..2c0c36f23c53 100644
--- a/clients/client-amplify/runtimeConfig.shared.ts
+++ b/clients/client-amplify/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { AmplifyClientConfig } from "./AmplifyClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AmplifyClientConfig) => ({
+export const getRuntimeConfig = (config: AmplifyClientConfig = {}) => ({
   apiVersion: "2017-07-25",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-amplify/runtimeConfig.ts b/clients/client-amplify/runtimeConfig.ts
index 17b13707a85d..7355bb43da79 100644
--- a/clients/client-amplify/runtimeConfig.ts
+++ b/clients/client-amplify/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AmplifyClientConfig) => {
+export const getRuntimeConfig = (config: AmplifyClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-amplifybackend/runtimeConfig.browser.ts b/clients/client-amplifybackend/runtimeConfig.browser.ts
index d6375ebc9268..0c873e7747cb 100644
--- a/clients/client-amplifybackend/runtimeConfig.browser.ts
+++ b/clients/client-amplifybackend/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AmplifyBackendClientConfig) => {
+export const getRuntimeConfig = (config: AmplifyBackendClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-amplifybackend/runtimeConfig.native.ts b/clients/client-amplifybackend/runtimeConfig.native.ts
index d6acc4eae6a0..fcc0db7a9c61 100644
--- a/clients/client-amplifybackend/runtimeConfig.native.ts
+++ b/clients/client-amplifybackend/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AmplifyBackendClientConfig) => {
+export const getRuntimeConfig = (config: AmplifyBackendClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-amplifybackend/runtimeConfig.shared.ts b/clients/client-amplifybackend/runtimeConfig.shared.ts
index 6263392d52b8..9163707202a4 100644
--- a/clients/client-amplifybackend/runtimeConfig.shared.ts
+++ b/clients/client-amplifybackend/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { AmplifyBackendClientConfig } from "./AmplifyBackendClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AmplifyBackendClientConfig) => ({
+export const getRuntimeConfig = (config: AmplifyBackendClientConfig = {}) => ({
   apiVersion: "2020-08-11",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-amplifybackend/runtimeConfig.ts b/clients/client-amplifybackend/runtimeConfig.ts
index 850f50df4dcc..c50f6fa60c13 100644
--- a/clients/client-amplifybackend/runtimeConfig.ts
+++ b/clients/client-amplifybackend/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AmplifyBackendClientConfig) => {
+export const getRuntimeConfig = (config: AmplifyBackendClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-api-gateway/runtimeConfig.browser.ts b/clients/client-api-gateway/runtimeConfig.browser.ts
index f4b0d89f4d38..dea049ab0019 100644
--- a/clients/client-api-gateway/runtimeConfig.browser.ts
+++ b/clients/client-api-gateway/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: APIGatewayClientConfig) => {
+export const getRuntimeConfig = (config: APIGatewayClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-api-gateway/runtimeConfig.native.ts b/clients/client-api-gateway/runtimeConfig.native.ts
index 796480896384..265081bfd519 100644
--- a/clients/client-api-gateway/runtimeConfig.native.ts
+++ b/clients/client-api-gateway/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: APIGatewayClientConfig) => {
+export const getRuntimeConfig = (config: APIGatewayClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-api-gateway/runtimeConfig.shared.ts b/clients/client-api-gateway/runtimeConfig.shared.ts
index fb7b75780100..18c653b4f78a 100644
--- a/clients/client-api-gateway/runtimeConfig.shared.ts
+++ b/clients/client-api-gateway/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { APIGatewayClientConfig } from "./APIGatewayClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: APIGatewayClientConfig) => ({
+export const getRuntimeConfig = (config: APIGatewayClientConfig = {}) => ({
   apiVersion: "2015-07-09",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-api-gateway/runtimeConfig.ts b/clients/client-api-gateway/runtimeConfig.ts
index e48d6a2e4635..e80433fcf613 100644
--- a/clients/client-api-gateway/runtimeConfig.ts
+++ b/clients/client-api-gateway/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: APIGatewayClientConfig) => {
+export const getRuntimeConfig = (config: APIGatewayClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-apigatewaymanagementapi/runtimeConfig.browser.ts b/clients/client-apigatewaymanagementapi/runtimeConfig.browser.ts
index 99a7f12b2ba6..a6fefb0df973 100644
--- a/clients/client-apigatewaymanagementapi/runtimeConfig.browser.ts
+++ b/clients/client-apigatewaymanagementapi/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ApiGatewayManagementApiClientConfig) => {
+export const getRuntimeConfig = (config: ApiGatewayManagementApiClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-apigatewaymanagementapi/runtimeConfig.native.ts b/clients/client-apigatewaymanagementapi/runtimeConfig.native.ts
index 19a1bc51d975..e1805c5a3ea3 100644
--- a/clients/client-apigatewaymanagementapi/runtimeConfig.native.ts
+++ b/clients/client-apigatewaymanagementapi/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ApiGatewayManagementApiClientConfig) => {
+export const getRuntimeConfig = (config: ApiGatewayManagementApiClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-apigatewaymanagementapi/runtimeConfig.shared.ts b/clients/client-apigatewaymanagementapi/runtimeConfig.shared.ts
index 43a4ec634602..c3b28639462b 100644
--- a/clients/client-apigatewaymanagementapi/runtimeConfig.shared.ts
+++ b/clients/client-apigatewaymanagementapi/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ApiGatewayManagementApiClientConfig } from "./ApiGatewayManagementApiCl
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ApiGatewayManagementApiClientConfig) => ({
+export const getRuntimeConfig = (config: ApiGatewayManagementApiClientConfig = {}) => ({
   apiVersion: "2018-11-29",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-apigatewaymanagementapi/runtimeConfig.ts b/clients/client-apigatewaymanagementapi/runtimeConfig.ts
index e082925247df..26e5be23b75a 100644
--- a/clients/client-apigatewaymanagementapi/runtimeConfig.ts
+++ b/clients/client-apigatewaymanagementapi/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ApiGatewayManagementApiClientConfig) => {
+export const getRuntimeConfig = (config: ApiGatewayManagementApiClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-apigatewayv2/runtimeConfig.browser.ts b/clients/client-apigatewayv2/runtimeConfig.browser.ts
index d522b5d7dfd8..4b880b38779a 100644
--- a/clients/client-apigatewayv2/runtimeConfig.browser.ts
+++ b/clients/client-apigatewayv2/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ApiGatewayV2ClientConfig) => {
+export const getRuntimeConfig = (config: ApiGatewayV2ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-apigatewayv2/runtimeConfig.native.ts b/clients/client-apigatewayv2/runtimeConfig.native.ts
index 1f443824ac8c..b90783e09530 100644
--- a/clients/client-apigatewayv2/runtimeConfig.native.ts
+++ b/clients/client-apigatewayv2/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ApiGatewayV2ClientConfig) => {
+export const getRuntimeConfig = (config: ApiGatewayV2ClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-apigatewayv2/runtimeConfig.shared.ts b/clients/client-apigatewayv2/runtimeConfig.shared.ts
index bd9e538f766c..03667e2cfcf2 100644
--- a/clients/client-apigatewayv2/runtimeConfig.shared.ts
+++ b/clients/client-apigatewayv2/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ApiGatewayV2ClientConfig } from "./ApiGatewayV2Client";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ApiGatewayV2ClientConfig) => ({
+export const getRuntimeConfig = (config: ApiGatewayV2ClientConfig = {}) => ({
   apiVersion: "2018-11-29",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-apigatewayv2/runtimeConfig.ts b/clients/client-apigatewayv2/runtimeConfig.ts
index 6ac2e8d3d111..4f983e447368 100644
--- a/clients/client-apigatewayv2/runtimeConfig.ts
+++ b/clients/client-apigatewayv2/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ApiGatewayV2ClientConfig) => {
+export const getRuntimeConfig = (config: ApiGatewayV2ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-app-mesh/runtimeConfig.browser.ts b/clients/client-app-mesh/runtimeConfig.browser.ts
index ea7595124d92..f6426c71eafa 100644
--- a/clients/client-app-mesh/runtimeConfig.browser.ts
+++ b/clients/client-app-mesh/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AppMeshClientConfig) => {
+export const getRuntimeConfig = (config: AppMeshClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-app-mesh/runtimeConfig.native.ts b/clients/client-app-mesh/runtimeConfig.native.ts
index 2b344fc1aeff..c1a5a4d29c5e 100644
--- a/clients/client-app-mesh/runtimeConfig.native.ts
+++ b/clients/client-app-mesh/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AppMeshClientConfig) => {
+export const getRuntimeConfig = (config: AppMeshClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-app-mesh/runtimeConfig.shared.ts b/clients/client-app-mesh/runtimeConfig.shared.ts
index 02ae0264ef0c..319859967d2b 100644
--- a/clients/client-app-mesh/runtimeConfig.shared.ts
+++ b/clients/client-app-mesh/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { AppMeshClientConfig } from "./AppMeshClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AppMeshClientConfig) => ({
+export const getRuntimeConfig = (config: AppMeshClientConfig = {}) => ({
   apiVersion: "2019-01-25",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-app-mesh/runtimeConfig.ts b/clients/client-app-mesh/runtimeConfig.ts
index 434f0e9d5b8c..de7e9d1c30dc 100644
--- a/clients/client-app-mesh/runtimeConfig.ts
+++ b/clients/client-app-mesh/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AppMeshClientConfig) => {
+export const getRuntimeConfig = (config: AppMeshClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-appconfig/runtimeConfig.browser.ts b/clients/client-appconfig/runtimeConfig.browser.ts
index d651e0aa05dc..ec497625e3c3 100644
--- a/clients/client-appconfig/runtimeConfig.browser.ts
+++ b/clients/client-appconfig/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AppConfigClientConfig) => {
+export const getRuntimeConfig = (config: AppConfigClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-appconfig/runtimeConfig.native.ts b/clients/client-appconfig/runtimeConfig.native.ts
index 380ae3f836a7..ac97c69d99e1 100644
--- a/clients/client-appconfig/runtimeConfig.native.ts
+++ b/clients/client-appconfig/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AppConfigClientConfig) => {
+export const getRuntimeConfig = (config: AppConfigClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-appconfig/runtimeConfig.shared.ts b/clients/client-appconfig/runtimeConfig.shared.ts
index d7ecc8a3fdce..9a2a051976e2 100644
--- a/clients/client-appconfig/runtimeConfig.shared.ts
+++ b/clients/client-appconfig/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { AppConfigClientConfig } from "./AppConfigClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AppConfigClientConfig) => ({
+export const getRuntimeConfig = (config: AppConfigClientConfig = {}) => ({
   apiVersion: "2019-10-09",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-appconfig/runtimeConfig.ts b/clients/client-appconfig/runtimeConfig.ts
index 3fbe330c7e23..92e8a5a2a57d 100644
--- a/clients/client-appconfig/runtimeConfig.ts
+++ b/clients/client-appconfig/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AppConfigClientConfig) => {
+export const getRuntimeConfig = (config: AppConfigClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-appflow/runtimeConfig.browser.ts b/clients/client-appflow/runtimeConfig.browser.ts
index 293ca28aa4a4..090f0d989c60 100644
--- a/clients/client-appflow/runtimeConfig.browser.ts
+++ b/clients/client-appflow/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AppflowClientConfig) => {
+export const getRuntimeConfig = (config: AppflowClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-appflow/runtimeConfig.native.ts b/clients/client-appflow/runtimeConfig.native.ts
index a501c9def984..c88d444c12d9 100644
--- a/clients/client-appflow/runtimeConfig.native.ts
+++ b/clients/client-appflow/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AppflowClientConfig) => {
+export const getRuntimeConfig = (config: AppflowClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-appflow/runtimeConfig.shared.ts b/clients/client-appflow/runtimeConfig.shared.ts
index e60f86337d26..ddd98088e874 100644
--- a/clients/client-appflow/runtimeConfig.shared.ts
+++ b/clients/client-appflow/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { AppflowClientConfig } from "./AppflowClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AppflowClientConfig) => ({
+export const getRuntimeConfig = (config: AppflowClientConfig = {}) => ({
   apiVersion: "2020-08-23",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-appflow/runtimeConfig.ts b/clients/client-appflow/runtimeConfig.ts
index 464fab832559..3feba7fcae06 100644
--- a/clients/client-appflow/runtimeConfig.ts
+++ b/clients/client-appflow/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AppflowClientConfig) => {
+export const getRuntimeConfig = (config: AppflowClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-appintegrations/runtimeConfig.browser.ts b/clients/client-appintegrations/runtimeConfig.browser.ts
index bb317d658300..2e0323ccabc1 100644
--- a/clients/client-appintegrations/runtimeConfig.browser.ts
+++ b/clients/client-appintegrations/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AppIntegrationsClientConfig) => {
+export const getRuntimeConfig = (config: AppIntegrationsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-appintegrations/runtimeConfig.native.ts b/clients/client-appintegrations/runtimeConfig.native.ts
index b7c03eb594ac..71249d3f21a5 100644
--- a/clients/client-appintegrations/runtimeConfig.native.ts
+++ b/clients/client-appintegrations/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AppIntegrationsClientConfig) => {
+export const getRuntimeConfig = (config: AppIntegrationsClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-appintegrations/runtimeConfig.shared.ts b/clients/client-appintegrations/runtimeConfig.shared.ts
index 238845e4b1e9..94456389b4b5 100644
--- a/clients/client-appintegrations/runtimeConfig.shared.ts
+++ b/clients/client-appintegrations/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { AppIntegrationsClientConfig } from "./AppIntegrationsClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AppIntegrationsClientConfig) => ({
+export const getRuntimeConfig = (config: AppIntegrationsClientConfig = {}) => ({
   apiVersion: "2020-07-29",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-appintegrations/runtimeConfig.ts b/clients/client-appintegrations/runtimeConfig.ts
index 8ee808f3c9e6..e1d679b1c438 100644
--- a/clients/client-appintegrations/runtimeConfig.ts
+++ b/clients/client-appintegrations/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AppIntegrationsClientConfig) => {
+export const getRuntimeConfig = (config: AppIntegrationsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-application-auto-scaling/runtimeConfig.browser.ts b/clients/client-application-auto-scaling/runtimeConfig.browser.ts
index d316ee055df9..eb9042b46f6a 100644
--- a/clients/client-application-auto-scaling/runtimeConfig.browser.ts
+++ b/clients/client-application-auto-scaling/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ApplicationAutoScalingClientConfig) => {
+export const getRuntimeConfig = (config: ApplicationAutoScalingClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-application-auto-scaling/runtimeConfig.native.ts b/clients/client-application-auto-scaling/runtimeConfig.native.ts
index ecb8ad342908..aa2c104df2ed 100644
--- a/clients/client-application-auto-scaling/runtimeConfig.native.ts
+++ b/clients/client-application-auto-scaling/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ApplicationAutoScalingClientConfig) => {
+export const getRuntimeConfig = (config: ApplicationAutoScalingClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-application-auto-scaling/runtimeConfig.shared.ts b/clients/client-application-auto-scaling/runtimeConfig.shared.ts
index 41cbb47f6223..e8d0daf4f1cd 100644
--- a/clients/client-application-auto-scaling/runtimeConfig.shared.ts
+++ b/clients/client-application-auto-scaling/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ApplicationAutoScalingClientConfig } from "./ApplicationAutoScalingClie
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ApplicationAutoScalingClientConfig) => ({
+export const getRuntimeConfig = (config: ApplicationAutoScalingClientConfig = {}) => ({
   apiVersion: "2016-02-06",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-application-auto-scaling/runtimeConfig.ts b/clients/client-application-auto-scaling/runtimeConfig.ts
index 70f30a3040c0..1da7fd209475 100644
--- a/clients/client-application-auto-scaling/runtimeConfig.ts
+++ b/clients/client-application-auto-scaling/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ApplicationAutoScalingClientConfig) => {
+export const getRuntimeConfig = (config: ApplicationAutoScalingClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-application-discovery-service/runtimeConfig.browser.ts b/clients/client-application-discovery-service/runtimeConfig.browser.ts
index a79a283e5648..adcd24d887c4 100644
--- a/clients/client-application-discovery-service/runtimeConfig.browser.ts
+++ b/clients/client-application-discovery-service/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ApplicationDiscoveryServiceClientConfig) => {
+export const getRuntimeConfig = (config: ApplicationDiscoveryServiceClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-application-discovery-service/runtimeConfig.native.ts b/clients/client-application-discovery-service/runtimeConfig.native.ts
index bff59a209dff..1a3b1a7d4fbf 100644
--- a/clients/client-application-discovery-service/runtimeConfig.native.ts
+++ b/clients/client-application-discovery-service/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ApplicationDiscoveryServiceClientConfig) => {
+export const getRuntimeConfig = (config: ApplicationDiscoveryServiceClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-application-discovery-service/runtimeConfig.shared.ts b/clients/client-application-discovery-service/runtimeConfig.shared.ts
index a9d656fa056c..4d7ce9dbc475 100644
--- a/clients/client-application-discovery-service/runtimeConfig.shared.ts
+++ b/clients/client-application-discovery-service/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ApplicationDiscoveryServiceClientConfig } from "./ApplicationDiscoveryS
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ApplicationDiscoveryServiceClientConfig) => ({
+export const getRuntimeConfig = (config: ApplicationDiscoveryServiceClientConfig = {}) => ({
   apiVersion: "2015-11-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-application-discovery-service/runtimeConfig.ts b/clients/client-application-discovery-service/runtimeConfig.ts
index 16ab4e5a3128..8e459ef3d0f3 100644
--- a/clients/client-application-discovery-service/runtimeConfig.ts
+++ b/clients/client-application-discovery-service/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ApplicationDiscoveryServiceClientConfig) => {
+export const getRuntimeConfig = (config: ApplicationDiscoveryServiceClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-application-insights/runtimeConfig.browser.ts b/clients/client-application-insights/runtimeConfig.browser.ts
index abbb58018f92..d593aecd5042 100644
--- a/clients/client-application-insights/runtimeConfig.browser.ts
+++ b/clients/client-application-insights/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ApplicationInsightsClientConfig) => {
+export const getRuntimeConfig = (config: ApplicationInsightsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-application-insights/runtimeConfig.native.ts b/clients/client-application-insights/runtimeConfig.native.ts
index 226e36318e16..378ee7adf0f1 100644
--- a/clients/client-application-insights/runtimeConfig.native.ts
+++ b/clients/client-application-insights/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ApplicationInsightsClientConfig) => {
+export const getRuntimeConfig = (config: ApplicationInsightsClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-application-insights/runtimeConfig.shared.ts b/clients/client-application-insights/runtimeConfig.shared.ts
index dc5fcdd0a58b..c63899847c95 100644
--- a/clients/client-application-insights/runtimeConfig.shared.ts
+++ b/clients/client-application-insights/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ApplicationInsightsClientConfig } from "./ApplicationInsightsClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ApplicationInsightsClientConfig) => ({
+export const getRuntimeConfig = (config: ApplicationInsightsClientConfig = {}) => ({
   apiVersion: "2018-11-25",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-application-insights/runtimeConfig.ts b/clients/client-application-insights/runtimeConfig.ts
index 5d6bdfcfac53..9d039be8687f 100644
--- a/clients/client-application-insights/runtimeConfig.ts
+++ b/clients/client-application-insights/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ApplicationInsightsClientConfig) => {
+export const getRuntimeConfig = (config: ApplicationInsightsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-applicationcostprofiler/runtimeConfig.browser.ts b/clients/client-applicationcostprofiler/runtimeConfig.browser.ts
index 2b961c9f3482..5d940d2ff2da 100644
--- a/clients/client-applicationcostprofiler/runtimeConfig.browser.ts
+++ b/clients/client-applicationcostprofiler/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ApplicationCostProfilerClientConfig) => {
+export const getRuntimeConfig = (config: ApplicationCostProfilerClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-applicationcostprofiler/runtimeConfig.native.ts b/clients/client-applicationcostprofiler/runtimeConfig.native.ts
index a2592181a759..cee39217a7b5 100644
--- a/clients/client-applicationcostprofiler/runtimeConfig.native.ts
+++ b/clients/client-applicationcostprofiler/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ApplicationCostProfilerClientConfig) => {
+export const getRuntimeConfig = (config: ApplicationCostProfilerClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-applicationcostprofiler/runtimeConfig.shared.ts b/clients/client-applicationcostprofiler/runtimeConfig.shared.ts
index 5d44e99b066e..c09e00c20ce8 100644
--- a/clients/client-applicationcostprofiler/runtimeConfig.shared.ts
+++ b/clients/client-applicationcostprofiler/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ApplicationCostProfilerClientConfig } from "./ApplicationCostProfilerCl
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ApplicationCostProfilerClientConfig) => ({
+export const getRuntimeConfig = (config: ApplicationCostProfilerClientConfig = {}) => ({
   apiVersion: "2020-09-10",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-applicationcostprofiler/runtimeConfig.ts b/clients/client-applicationcostprofiler/runtimeConfig.ts
index b15ef6c00941..776e1819e2d2 100644
--- a/clients/client-applicationcostprofiler/runtimeConfig.ts
+++ b/clients/client-applicationcostprofiler/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ApplicationCostProfilerClientConfig) => {
+export const getRuntimeConfig = (config: ApplicationCostProfilerClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-apprunner/runtimeConfig.browser.ts b/clients/client-apprunner/runtimeConfig.browser.ts
index 204008bcd10a..092a0b81e6dc 100644
--- a/clients/client-apprunner/runtimeConfig.browser.ts
+++ b/clients/client-apprunner/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AppRunnerClientConfig) => {
+export const getRuntimeConfig = (config: AppRunnerClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-apprunner/runtimeConfig.native.ts b/clients/client-apprunner/runtimeConfig.native.ts
index 908f340c4a11..741d88816c4a 100644
--- a/clients/client-apprunner/runtimeConfig.native.ts
+++ b/clients/client-apprunner/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AppRunnerClientConfig) => {
+export const getRuntimeConfig = (config: AppRunnerClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-apprunner/runtimeConfig.shared.ts b/clients/client-apprunner/runtimeConfig.shared.ts
index 5c1842a952c9..a59930ab8961 100644
--- a/clients/client-apprunner/runtimeConfig.shared.ts
+++ b/clients/client-apprunner/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { AppRunnerClientConfig } from "./AppRunnerClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AppRunnerClientConfig) => ({
+export const getRuntimeConfig = (config: AppRunnerClientConfig = {}) => ({
   apiVersion: "2020-05-15",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-apprunner/runtimeConfig.ts b/clients/client-apprunner/runtimeConfig.ts
index b63ecea23e10..fea2c053c814 100644
--- a/clients/client-apprunner/runtimeConfig.ts
+++ b/clients/client-apprunner/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AppRunnerClientConfig) => {
+export const getRuntimeConfig = (config: AppRunnerClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-appstream/runtimeConfig.browser.ts b/clients/client-appstream/runtimeConfig.browser.ts
index 1e88aab058bc..6a4c3eb758bc 100644
--- a/clients/client-appstream/runtimeConfig.browser.ts
+++ b/clients/client-appstream/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AppStreamClientConfig) => {
+export const getRuntimeConfig = (config: AppStreamClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-appstream/runtimeConfig.native.ts b/clients/client-appstream/runtimeConfig.native.ts
index 29143f22ffdf..1434d8d687a3 100644
--- a/clients/client-appstream/runtimeConfig.native.ts
+++ b/clients/client-appstream/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AppStreamClientConfig) => {
+export const getRuntimeConfig = (config: AppStreamClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-appstream/runtimeConfig.shared.ts b/clients/client-appstream/runtimeConfig.shared.ts
index 9b814cad013a..dc7458a221aa 100644
--- a/clients/client-appstream/runtimeConfig.shared.ts
+++ b/clients/client-appstream/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { AppStreamClientConfig } from "./AppStreamClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AppStreamClientConfig) => ({
+export const getRuntimeConfig = (config: AppStreamClientConfig = {}) => ({
   apiVersion: "2016-12-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-appstream/runtimeConfig.ts b/clients/client-appstream/runtimeConfig.ts
index ad7622c1c951..4196dcee28ff 100644
--- a/clients/client-appstream/runtimeConfig.ts
+++ b/clients/client-appstream/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AppStreamClientConfig) => {
+export const getRuntimeConfig = (config: AppStreamClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-appsync/runtimeConfig.browser.ts b/clients/client-appsync/runtimeConfig.browser.ts
index ba338ebdf974..04ce8fd15815 100644
--- a/clients/client-appsync/runtimeConfig.browser.ts
+++ b/clients/client-appsync/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AppSyncClientConfig) => {
+export const getRuntimeConfig = (config: AppSyncClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-appsync/runtimeConfig.native.ts b/clients/client-appsync/runtimeConfig.native.ts
index 46348942f5d8..e33bfed916ec 100644
--- a/clients/client-appsync/runtimeConfig.native.ts
+++ b/clients/client-appsync/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AppSyncClientConfig) => {
+export const getRuntimeConfig = (config: AppSyncClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-appsync/runtimeConfig.shared.ts b/clients/client-appsync/runtimeConfig.shared.ts
index 0f75b5f6dabe..710780060208 100644
--- a/clients/client-appsync/runtimeConfig.shared.ts
+++ b/clients/client-appsync/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { AppSyncClientConfig } from "./AppSyncClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AppSyncClientConfig) => ({
+export const getRuntimeConfig = (config: AppSyncClientConfig = {}) => ({
   apiVersion: "2017-07-25",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-appsync/runtimeConfig.ts b/clients/client-appsync/runtimeConfig.ts
index 01af6305ae79..13e4c9b94970 100644
--- a/clients/client-appsync/runtimeConfig.ts
+++ b/clients/client-appsync/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AppSyncClientConfig) => {
+export const getRuntimeConfig = (config: AppSyncClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-athena/runtimeConfig.browser.ts b/clients/client-athena/runtimeConfig.browser.ts
index 58112c98d9ac..fbd3de45dd94 100644
--- a/clients/client-athena/runtimeConfig.browser.ts
+++ b/clients/client-athena/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AthenaClientConfig) => {
+export const getRuntimeConfig = (config: AthenaClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-athena/runtimeConfig.native.ts b/clients/client-athena/runtimeConfig.native.ts
index 67f2064992b4..414ac176f708 100644
--- a/clients/client-athena/runtimeConfig.native.ts
+++ b/clients/client-athena/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AthenaClientConfig) => {
+export const getRuntimeConfig = (config: AthenaClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-athena/runtimeConfig.shared.ts b/clients/client-athena/runtimeConfig.shared.ts
index c1c0b24fca4b..f2799408d31c 100644
--- a/clients/client-athena/runtimeConfig.shared.ts
+++ b/clients/client-athena/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { AthenaClientConfig } from "./AthenaClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AthenaClientConfig) => ({
+export const getRuntimeConfig = (config: AthenaClientConfig = {}) => ({
   apiVersion: "2017-05-18",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-athena/runtimeConfig.ts b/clients/client-athena/runtimeConfig.ts
index f79fb4732c09..dddc460f4b75 100644
--- a/clients/client-athena/runtimeConfig.ts
+++ b/clients/client-athena/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AthenaClientConfig) => {
+export const getRuntimeConfig = (config: AthenaClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-auditmanager/runtimeConfig.browser.ts b/clients/client-auditmanager/runtimeConfig.browser.ts
index 9ecccdf24dfd..d150d67b9231 100644
--- a/clients/client-auditmanager/runtimeConfig.browser.ts
+++ b/clients/client-auditmanager/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AuditManagerClientConfig) => {
+export const getRuntimeConfig = (config: AuditManagerClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-auditmanager/runtimeConfig.native.ts b/clients/client-auditmanager/runtimeConfig.native.ts
index fdef0d81e4d1..8ac8c7e49b5d 100644
--- a/clients/client-auditmanager/runtimeConfig.native.ts
+++ b/clients/client-auditmanager/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AuditManagerClientConfig) => {
+export const getRuntimeConfig = (config: AuditManagerClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-auditmanager/runtimeConfig.shared.ts b/clients/client-auditmanager/runtimeConfig.shared.ts
index 20d217539d3e..3c288d01adce 100644
--- a/clients/client-auditmanager/runtimeConfig.shared.ts
+++ b/clients/client-auditmanager/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { AuditManagerClientConfig } from "./AuditManagerClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AuditManagerClientConfig) => ({
+export const getRuntimeConfig = (config: AuditManagerClientConfig = {}) => ({
   apiVersion: "2017-07-25",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-auditmanager/runtimeConfig.ts b/clients/client-auditmanager/runtimeConfig.ts
index fe79845f0fd3..a0e394af1b27 100644
--- a/clients/client-auditmanager/runtimeConfig.ts
+++ b/clients/client-auditmanager/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AuditManagerClientConfig) => {
+export const getRuntimeConfig = (config: AuditManagerClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-auto-scaling-plans/runtimeConfig.browser.ts b/clients/client-auto-scaling-plans/runtimeConfig.browser.ts
index 4952af7c20f3..39746e23609a 100644
--- a/clients/client-auto-scaling-plans/runtimeConfig.browser.ts
+++ b/clients/client-auto-scaling-plans/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AutoScalingPlansClientConfig) => {
+export const getRuntimeConfig = (config: AutoScalingPlansClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-auto-scaling-plans/runtimeConfig.native.ts b/clients/client-auto-scaling-plans/runtimeConfig.native.ts
index 321b9a4e61be..d64b3f25897b 100644
--- a/clients/client-auto-scaling-plans/runtimeConfig.native.ts
+++ b/clients/client-auto-scaling-plans/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AutoScalingPlansClientConfig) => {
+export const getRuntimeConfig = (config: AutoScalingPlansClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-auto-scaling-plans/runtimeConfig.shared.ts b/clients/client-auto-scaling-plans/runtimeConfig.shared.ts
index 1a65afce7c4d..a6d8e9d9a90a 100644
--- a/clients/client-auto-scaling-plans/runtimeConfig.shared.ts
+++ b/clients/client-auto-scaling-plans/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { AutoScalingPlansClientConfig } from "./AutoScalingPlansClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AutoScalingPlansClientConfig) => ({
+export const getRuntimeConfig = (config: AutoScalingPlansClientConfig = {}) => ({
   apiVersion: "2018-01-06",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-auto-scaling-plans/runtimeConfig.ts b/clients/client-auto-scaling-plans/runtimeConfig.ts
index febb03bbae09..afa5664dbd58 100644
--- a/clients/client-auto-scaling-plans/runtimeConfig.ts
+++ b/clients/client-auto-scaling-plans/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AutoScalingPlansClientConfig) => {
+export const getRuntimeConfig = (config: AutoScalingPlansClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-auto-scaling/runtimeConfig.browser.ts b/clients/client-auto-scaling/runtimeConfig.browser.ts
index afb25f4edd99..4ccbcdc6c259 100644
--- a/clients/client-auto-scaling/runtimeConfig.browser.ts
+++ b/clients/client-auto-scaling/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AutoScalingClientConfig) => {
+export const getRuntimeConfig = (config: AutoScalingClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-auto-scaling/runtimeConfig.native.ts b/clients/client-auto-scaling/runtimeConfig.native.ts
index 068cce764e9f..a5929b4e1d7a 100644
--- a/clients/client-auto-scaling/runtimeConfig.native.ts
+++ b/clients/client-auto-scaling/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AutoScalingClientConfig) => {
+export const getRuntimeConfig = (config: AutoScalingClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-auto-scaling/runtimeConfig.shared.ts b/clients/client-auto-scaling/runtimeConfig.shared.ts
index d6a93ec729e9..71ba62554bc7 100644
--- a/clients/client-auto-scaling/runtimeConfig.shared.ts
+++ b/clients/client-auto-scaling/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { AutoScalingClientConfig } from "./AutoScalingClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AutoScalingClientConfig) => ({
+export const getRuntimeConfig = (config: AutoScalingClientConfig = {}) => ({
   apiVersion: "2011-01-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-auto-scaling/runtimeConfig.ts b/clients/client-auto-scaling/runtimeConfig.ts
index 9ab70d182202..76d6891f60bb 100644
--- a/clients/client-auto-scaling/runtimeConfig.ts
+++ b/clients/client-auto-scaling/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: AutoScalingClientConfig) => {
+export const getRuntimeConfig = (config: AutoScalingClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-backup/runtimeConfig.browser.ts b/clients/client-backup/runtimeConfig.browser.ts
index fe011e964359..7b45f86038f3 100644
--- a/clients/client-backup/runtimeConfig.browser.ts
+++ b/clients/client-backup/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: BackupClientConfig) => {
+export const getRuntimeConfig = (config: BackupClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-backup/runtimeConfig.native.ts b/clients/client-backup/runtimeConfig.native.ts
index a08ae1ad5b90..715cb6ac01f2 100644
--- a/clients/client-backup/runtimeConfig.native.ts
+++ b/clients/client-backup/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: BackupClientConfig) => {
+export const getRuntimeConfig = (config: BackupClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-backup/runtimeConfig.shared.ts b/clients/client-backup/runtimeConfig.shared.ts
index c712f778d85d..d348ddb51e0f 100644
--- a/clients/client-backup/runtimeConfig.shared.ts
+++ b/clients/client-backup/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { BackupClientConfig } from "./BackupClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: BackupClientConfig) => ({
+export const getRuntimeConfig = (config: BackupClientConfig = {}) => ({
   apiVersion: "2018-11-15",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-backup/runtimeConfig.ts b/clients/client-backup/runtimeConfig.ts
index 0d3252524556..5adfab0d9c84 100644
--- a/clients/client-backup/runtimeConfig.ts
+++ b/clients/client-backup/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: BackupClientConfig) => {
+export const getRuntimeConfig = (config: BackupClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-batch/runtimeConfig.browser.ts b/clients/client-batch/runtimeConfig.browser.ts
index 7925b9612d31..50f5058ca057 100644
--- a/clients/client-batch/runtimeConfig.browser.ts
+++ b/clients/client-batch/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: BatchClientConfig) => {
+export const getRuntimeConfig = (config: BatchClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-batch/runtimeConfig.native.ts b/clients/client-batch/runtimeConfig.native.ts
index fdc9d54e9e36..3eaf30744626 100644
--- a/clients/client-batch/runtimeConfig.native.ts
+++ b/clients/client-batch/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: BatchClientConfig) => {
+export const getRuntimeConfig = (config: BatchClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-batch/runtimeConfig.shared.ts b/clients/client-batch/runtimeConfig.shared.ts
index c257dc78ff7b..11bd1d91140d 100644
--- a/clients/client-batch/runtimeConfig.shared.ts
+++ b/clients/client-batch/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { BatchClientConfig } from "./BatchClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: BatchClientConfig) => ({
+export const getRuntimeConfig = (config: BatchClientConfig = {}) => ({
   apiVersion: "2016-08-10",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-batch/runtimeConfig.ts b/clients/client-batch/runtimeConfig.ts
index c134edf23845..a1e9deccd4fb 100644
--- a/clients/client-batch/runtimeConfig.ts
+++ b/clients/client-batch/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: BatchClientConfig) => {
+export const getRuntimeConfig = (config: BatchClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-braket/runtimeConfig.browser.ts b/clients/client-braket/runtimeConfig.browser.ts
index 57a219d1a97c..58be4c2ba3a8 100644
--- a/clients/client-braket/runtimeConfig.browser.ts
+++ b/clients/client-braket/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: BraketClientConfig) => {
+export const getRuntimeConfig = (config: BraketClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-braket/runtimeConfig.native.ts b/clients/client-braket/runtimeConfig.native.ts
index dcfa9962a2fe..2c20d5058889 100644
--- a/clients/client-braket/runtimeConfig.native.ts
+++ b/clients/client-braket/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: BraketClientConfig) => {
+export const getRuntimeConfig = (config: BraketClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-braket/runtimeConfig.shared.ts b/clients/client-braket/runtimeConfig.shared.ts
index d1c06d24464d..fe9dbef59548 100644
--- a/clients/client-braket/runtimeConfig.shared.ts
+++ b/clients/client-braket/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { BraketClientConfig } from "./BraketClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: BraketClientConfig) => ({
+export const getRuntimeConfig = (config: BraketClientConfig = {}) => ({
   apiVersion: "2019-09-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-braket/runtimeConfig.ts b/clients/client-braket/runtimeConfig.ts
index 243de27fbf34..d99b6ecb5b5b 100644
--- a/clients/client-braket/runtimeConfig.ts
+++ b/clients/client-braket/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: BraketClientConfig) => {
+export const getRuntimeConfig = (config: BraketClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-budgets/runtimeConfig.browser.ts b/clients/client-budgets/runtimeConfig.browser.ts
index 5d98acd5772b..607f001d8286 100644
--- a/clients/client-budgets/runtimeConfig.browser.ts
+++ b/clients/client-budgets/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: BudgetsClientConfig) => {
+export const getRuntimeConfig = (config: BudgetsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-budgets/runtimeConfig.native.ts b/clients/client-budgets/runtimeConfig.native.ts
index ae786be00c39..36f74777eedd 100644
--- a/clients/client-budgets/runtimeConfig.native.ts
+++ b/clients/client-budgets/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: BudgetsClientConfig) => {
+export const getRuntimeConfig = (config: BudgetsClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-budgets/runtimeConfig.shared.ts b/clients/client-budgets/runtimeConfig.shared.ts
index 5520c35361ed..7629a4e7c162 100644
--- a/clients/client-budgets/runtimeConfig.shared.ts
+++ b/clients/client-budgets/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { BudgetsClientConfig } from "./BudgetsClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: BudgetsClientConfig) => ({
+export const getRuntimeConfig = (config: BudgetsClientConfig = {}) => ({
   apiVersion: "2016-10-20",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-budgets/runtimeConfig.ts b/clients/client-budgets/runtimeConfig.ts
index 9d7425295690..9ea06d12efae 100644
--- a/clients/client-budgets/runtimeConfig.ts
+++ b/clients/client-budgets/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: BudgetsClientConfig) => {
+export const getRuntimeConfig = (config: BudgetsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-chime/runtimeConfig.browser.ts b/clients/client-chime/runtimeConfig.browser.ts
index 7bead0242997..cd60866494e2 100644
--- a/clients/client-chime/runtimeConfig.browser.ts
+++ b/clients/client-chime/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ChimeClientConfig) => {
+export const getRuntimeConfig = (config: ChimeClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-chime/runtimeConfig.native.ts b/clients/client-chime/runtimeConfig.native.ts
index 9283cddacf2a..028f1d0df302 100644
--- a/clients/client-chime/runtimeConfig.native.ts
+++ b/clients/client-chime/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ChimeClientConfig) => {
+export const getRuntimeConfig = (config: ChimeClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-chime/runtimeConfig.shared.ts b/clients/client-chime/runtimeConfig.shared.ts
index 8b2cacbe499f..233a2da8dd15 100644
--- a/clients/client-chime/runtimeConfig.shared.ts
+++ b/clients/client-chime/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ChimeClientConfig } from "./ChimeClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ChimeClientConfig) => ({
+export const getRuntimeConfig = (config: ChimeClientConfig = {}) => ({
   apiVersion: "2018-05-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-chime/runtimeConfig.ts b/clients/client-chime/runtimeConfig.ts
index 3db8cfe98ac0..9756fc77fcd3 100644
--- a/clients/client-chime/runtimeConfig.ts
+++ b/clients/client-chime/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ChimeClientConfig) => {
+export const getRuntimeConfig = (config: ChimeClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cloud9/runtimeConfig.browser.ts b/clients/client-cloud9/runtimeConfig.browser.ts
index d509cce28b20..165433ca639c 100644
--- a/clients/client-cloud9/runtimeConfig.browser.ts
+++ b/clients/client-cloud9/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: Cloud9ClientConfig) => {
+export const getRuntimeConfig = (config: Cloud9ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cloud9/runtimeConfig.native.ts b/clients/client-cloud9/runtimeConfig.native.ts
index 9d76f1e061d2..c9e092a5b907 100644
--- a/clients/client-cloud9/runtimeConfig.native.ts
+++ b/clients/client-cloud9/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: Cloud9ClientConfig) => {
+export const getRuntimeConfig = (config: Cloud9ClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-cloud9/runtimeConfig.shared.ts b/clients/client-cloud9/runtimeConfig.shared.ts
index f6ccfa23b88d..77d89e6a1d78 100644
--- a/clients/client-cloud9/runtimeConfig.shared.ts
+++ b/clients/client-cloud9/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { Cloud9ClientConfig } from "./Cloud9Client";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: Cloud9ClientConfig) => ({
+export const getRuntimeConfig = (config: Cloud9ClientConfig = {}) => ({
   apiVersion: "2017-09-23",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-cloud9/runtimeConfig.ts b/clients/client-cloud9/runtimeConfig.ts
index ea29fc9775e8..a953fac9b443 100644
--- a/clients/client-cloud9/runtimeConfig.ts
+++ b/clients/client-cloud9/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: Cloud9ClientConfig) => {
+export const getRuntimeConfig = (config: Cloud9ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-clouddirectory/runtimeConfig.browser.ts b/clients/client-clouddirectory/runtimeConfig.browser.ts
index b043e3e6a22a..91ab678addf9 100644
--- a/clients/client-clouddirectory/runtimeConfig.browser.ts
+++ b/clients/client-clouddirectory/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudDirectoryClientConfig) => {
+export const getRuntimeConfig = (config: CloudDirectoryClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-clouddirectory/runtimeConfig.native.ts b/clients/client-clouddirectory/runtimeConfig.native.ts
index b57cdb64e630..b73c7b187ba6 100644
--- a/clients/client-clouddirectory/runtimeConfig.native.ts
+++ b/clients/client-clouddirectory/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudDirectoryClientConfig) => {
+export const getRuntimeConfig = (config: CloudDirectoryClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-clouddirectory/runtimeConfig.shared.ts b/clients/client-clouddirectory/runtimeConfig.shared.ts
index 7537a543fab7..2f9ef22ba730 100644
--- a/clients/client-clouddirectory/runtimeConfig.shared.ts
+++ b/clients/client-clouddirectory/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { CloudDirectoryClientConfig } from "./CloudDirectoryClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudDirectoryClientConfig) => ({
+export const getRuntimeConfig = (config: CloudDirectoryClientConfig = {}) => ({
   apiVersion: "2017-01-11",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-clouddirectory/runtimeConfig.ts b/clients/client-clouddirectory/runtimeConfig.ts
index f2972d4b8967..f0efdf120848 100644
--- a/clients/client-clouddirectory/runtimeConfig.ts
+++ b/clients/client-clouddirectory/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudDirectoryClientConfig) => {
+export const getRuntimeConfig = (config: CloudDirectoryClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cloudformation/runtimeConfig.browser.ts b/clients/client-cloudformation/runtimeConfig.browser.ts
index d9dec74bc00f..7daba5db528d 100644
--- a/clients/client-cloudformation/runtimeConfig.browser.ts
+++ b/clients/client-cloudformation/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudFormationClientConfig) => {
+export const getRuntimeConfig = (config: CloudFormationClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cloudformation/runtimeConfig.native.ts b/clients/client-cloudformation/runtimeConfig.native.ts
index 20477947c328..f172b577726c 100644
--- a/clients/client-cloudformation/runtimeConfig.native.ts
+++ b/clients/client-cloudformation/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudFormationClientConfig) => {
+export const getRuntimeConfig = (config: CloudFormationClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-cloudformation/runtimeConfig.shared.ts b/clients/client-cloudformation/runtimeConfig.shared.ts
index 37b4948a5de5..cc5528aaddee 100644
--- a/clients/client-cloudformation/runtimeConfig.shared.ts
+++ b/clients/client-cloudformation/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { CloudFormationClientConfig } from "./CloudFormationClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudFormationClientConfig) => ({
+export const getRuntimeConfig = (config: CloudFormationClientConfig = {}) => ({
   apiVersion: "2010-05-15",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-cloudformation/runtimeConfig.ts b/clients/client-cloudformation/runtimeConfig.ts
index 3bbe114c23f8..bff8157af8ab 100644
--- a/clients/client-cloudformation/runtimeConfig.ts
+++ b/clients/client-cloudformation/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudFormationClientConfig) => {
+export const getRuntimeConfig = (config: CloudFormationClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cloudfront/runtimeConfig.browser.ts b/clients/client-cloudfront/runtimeConfig.browser.ts
index 902d6b299c4c..a6ff2b52befb 100644
--- a/clients/client-cloudfront/runtimeConfig.browser.ts
+++ b/clients/client-cloudfront/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudFrontClientConfig) => {
+export const getRuntimeConfig = (config: CloudFrontClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cloudfront/runtimeConfig.native.ts b/clients/client-cloudfront/runtimeConfig.native.ts
index 80fefc46c724..60662ab3ef67 100644
--- a/clients/client-cloudfront/runtimeConfig.native.ts
+++ b/clients/client-cloudfront/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudFrontClientConfig) => {
+export const getRuntimeConfig = (config: CloudFrontClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-cloudfront/runtimeConfig.shared.ts b/clients/client-cloudfront/runtimeConfig.shared.ts
index 271074be5529..16a43c0875b4 100644
--- a/clients/client-cloudfront/runtimeConfig.shared.ts
+++ b/clients/client-cloudfront/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { CloudFrontClientConfig } from "./CloudFrontClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudFrontClientConfig) => ({
+export const getRuntimeConfig = (config: CloudFrontClientConfig = {}) => ({
   apiVersion: "2020-05-31",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-cloudfront/runtimeConfig.ts b/clients/client-cloudfront/runtimeConfig.ts
index 30bdfdb2210a..2008a207b17f 100644
--- a/clients/client-cloudfront/runtimeConfig.ts
+++ b/clients/client-cloudfront/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudFrontClientConfig) => {
+export const getRuntimeConfig = (config: CloudFrontClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cloudhsm-v2/runtimeConfig.browser.ts b/clients/client-cloudhsm-v2/runtimeConfig.browser.ts
index 156413e6af64..d038349f80b6 100644
--- a/clients/client-cloudhsm-v2/runtimeConfig.browser.ts
+++ b/clients/client-cloudhsm-v2/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudHSMV2ClientConfig) => {
+export const getRuntimeConfig = (config: CloudHSMV2ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cloudhsm-v2/runtimeConfig.native.ts b/clients/client-cloudhsm-v2/runtimeConfig.native.ts
index 0f23cd2f33c0..165179b05f56 100644
--- a/clients/client-cloudhsm-v2/runtimeConfig.native.ts
+++ b/clients/client-cloudhsm-v2/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudHSMV2ClientConfig) => {
+export const getRuntimeConfig = (config: CloudHSMV2ClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-cloudhsm-v2/runtimeConfig.shared.ts b/clients/client-cloudhsm-v2/runtimeConfig.shared.ts
index cc5a30b4f9b2..902a28da6ef8 100644
--- a/clients/client-cloudhsm-v2/runtimeConfig.shared.ts
+++ b/clients/client-cloudhsm-v2/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { CloudHSMV2ClientConfig } from "./CloudHSMV2Client";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudHSMV2ClientConfig) => ({
+export const getRuntimeConfig = (config: CloudHSMV2ClientConfig = {}) => ({
   apiVersion: "2017-04-28",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-cloudhsm-v2/runtimeConfig.ts b/clients/client-cloudhsm-v2/runtimeConfig.ts
index 33005cca4fd5..cdbf45e5f044 100644
--- a/clients/client-cloudhsm-v2/runtimeConfig.ts
+++ b/clients/client-cloudhsm-v2/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudHSMV2ClientConfig) => {
+export const getRuntimeConfig = (config: CloudHSMV2ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cloudhsm/runtimeConfig.browser.ts b/clients/client-cloudhsm/runtimeConfig.browser.ts
index d5342e40aaa2..7b6be73a17f1 100644
--- a/clients/client-cloudhsm/runtimeConfig.browser.ts
+++ b/clients/client-cloudhsm/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudHSMClientConfig) => {
+export const getRuntimeConfig = (config: CloudHSMClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cloudhsm/runtimeConfig.native.ts b/clients/client-cloudhsm/runtimeConfig.native.ts
index cbf82826508b..01513920ea75 100644
--- a/clients/client-cloudhsm/runtimeConfig.native.ts
+++ b/clients/client-cloudhsm/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudHSMClientConfig) => {
+export const getRuntimeConfig = (config: CloudHSMClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-cloudhsm/runtimeConfig.shared.ts b/clients/client-cloudhsm/runtimeConfig.shared.ts
index 24c82fc5ccb2..8920ee3a733d 100644
--- a/clients/client-cloudhsm/runtimeConfig.shared.ts
+++ b/clients/client-cloudhsm/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { CloudHSMClientConfig } from "./CloudHSMClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudHSMClientConfig) => ({
+export const getRuntimeConfig = (config: CloudHSMClientConfig = {}) => ({
   apiVersion: "2014-05-30",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-cloudhsm/runtimeConfig.ts b/clients/client-cloudhsm/runtimeConfig.ts
index 3208507d3991..dd50ded2150e 100644
--- a/clients/client-cloudhsm/runtimeConfig.ts
+++ b/clients/client-cloudhsm/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudHSMClientConfig) => {
+export const getRuntimeConfig = (config: CloudHSMClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cloudsearch-domain/runtimeConfig.browser.ts b/clients/client-cloudsearch-domain/runtimeConfig.browser.ts
index 23c3fed2b9c3..5870bf7aa0cf 100644
--- a/clients/client-cloudsearch-domain/runtimeConfig.browser.ts
+++ b/clients/client-cloudsearch-domain/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudSearchDomainClientConfig) => {
+export const getRuntimeConfig = (config: CloudSearchDomainClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cloudsearch-domain/runtimeConfig.native.ts b/clients/client-cloudsearch-domain/runtimeConfig.native.ts
index ce0a66d8c163..8b2108005dee 100644
--- a/clients/client-cloudsearch-domain/runtimeConfig.native.ts
+++ b/clients/client-cloudsearch-domain/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudSearchDomainClientConfig) => {
+export const getRuntimeConfig = (config: CloudSearchDomainClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-cloudsearch-domain/runtimeConfig.shared.ts b/clients/client-cloudsearch-domain/runtimeConfig.shared.ts
index f9459ddb8620..6b8a0bdf3f61 100644
--- a/clients/client-cloudsearch-domain/runtimeConfig.shared.ts
+++ b/clients/client-cloudsearch-domain/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { CloudSearchDomainClientConfig } from "./CloudSearchDomainClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudSearchDomainClientConfig) => ({
+export const getRuntimeConfig = (config: CloudSearchDomainClientConfig = {}) => ({
   apiVersion: "2013-01-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-cloudsearch-domain/runtimeConfig.ts b/clients/client-cloudsearch-domain/runtimeConfig.ts
index 03eb83ff36d0..71870c274b3d 100644
--- a/clients/client-cloudsearch-domain/runtimeConfig.ts
+++ b/clients/client-cloudsearch-domain/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudSearchDomainClientConfig) => {
+export const getRuntimeConfig = (config: CloudSearchDomainClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cloudsearch/runtimeConfig.browser.ts b/clients/client-cloudsearch/runtimeConfig.browser.ts
index 774716319e2e..cf35ebef7a07 100644
--- a/clients/client-cloudsearch/runtimeConfig.browser.ts
+++ b/clients/client-cloudsearch/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudSearchClientConfig) => {
+export const getRuntimeConfig = (config: CloudSearchClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cloudsearch/runtimeConfig.native.ts b/clients/client-cloudsearch/runtimeConfig.native.ts
index c12d94559669..9848f4bed04c 100644
--- a/clients/client-cloudsearch/runtimeConfig.native.ts
+++ b/clients/client-cloudsearch/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudSearchClientConfig) => {
+export const getRuntimeConfig = (config: CloudSearchClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-cloudsearch/runtimeConfig.shared.ts b/clients/client-cloudsearch/runtimeConfig.shared.ts
index 24184a693bc5..25195f84fd15 100644
--- a/clients/client-cloudsearch/runtimeConfig.shared.ts
+++ b/clients/client-cloudsearch/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { CloudSearchClientConfig } from "./CloudSearchClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudSearchClientConfig) => ({
+export const getRuntimeConfig = (config: CloudSearchClientConfig = {}) => ({
   apiVersion: "2013-01-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-cloudsearch/runtimeConfig.ts b/clients/client-cloudsearch/runtimeConfig.ts
index 9341e1f231a8..cea92ee45ec3 100644
--- a/clients/client-cloudsearch/runtimeConfig.ts
+++ b/clients/client-cloudsearch/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudSearchClientConfig) => {
+export const getRuntimeConfig = (config: CloudSearchClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cloudtrail/runtimeConfig.browser.ts b/clients/client-cloudtrail/runtimeConfig.browser.ts
index c6ad5995a4ba..becafe104471 100644
--- a/clients/client-cloudtrail/runtimeConfig.browser.ts
+++ b/clients/client-cloudtrail/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudTrailClientConfig) => {
+export const getRuntimeConfig = (config: CloudTrailClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cloudtrail/runtimeConfig.native.ts b/clients/client-cloudtrail/runtimeConfig.native.ts
index bc99d2a4b0f0..f6ddaa623a01 100644
--- a/clients/client-cloudtrail/runtimeConfig.native.ts
+++ b/clients/client-cloudtrail/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudTrailClientConfig) => {
+export const getRuntimeConfig = (config: CloudTrailClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-cloudtrail/runtimeConfig.shared.ts b/clients/client-cloudtrail/runtimeConfig.shared.ts
index 08565aca1826..0065d1ed408e 100644
--- a/clients/client-cloudtrail/runtimeConfig.shared.ts
+++ b/clients/client-cloudtrail/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { CloudTrailClientConfig } from "./CloudTrailClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudTrailClientConfig) => ({
+export const getRuntimeConfig = (config: CloudTrailClientConfig = {}) => ({
   apiVersion: "2013-11-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-cloudtrail/runtimeConfig.ts b/clients/client-cloudtrail/runtimeConfig.ts
index 62f098cdb2c5..2e925dc837f4 100644
--- a/clients/client-cloudtrail/runtimeConfig.ts
+++ b/clients/client-cloudtrail/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudTrailClientConfig) => {
+export const getRuntimeConfig = (config: CloudTrailClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cloudwatch-events/runtimeConfig.browser.ts b/clients/client-cloudwatch-events/runtimeConfig.browser.ts
index 9087a17f9af1..cea4c14af92d 100644
--- a/clients/client-cloudwatch-events/runtimeConfig.browser.ts
+++ b/clients/client-cloudwatch-events/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudWatchEventsClientConfig) => {
+export const getRuntimeConfig = (config: CloudWatchEventsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cloudwatch-events/runtimeConfig.native.ts b/clients/client-cloudwatch-events/runtimeConfig.native.ts
index a01ad3749f22..51052907228e 100644
--- a/clients/client-cloudwatch-events/runtimeConfig.native.ts
+++ b/clients/client-cloudwatch-events/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudWatchEventsClientConfig) => {
+export const getRuntimeConfig = (config: CloudWatchEventsClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-cloudwatch-events/runtimeConfig.shared.ts b/clients/client-cloudwatch-events/runtimeConfig.shared.ts
index a55678ec8a8a..8ac024603063 100644
--- a/clients/client-cloudwatch-events/runtimeConfig.shared.ts
+++ b/clients/client-cloudwatch-events/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { CloudWatchEventsClientConfig } from "./CloudWatchEventsClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudWatchEventsClientConfig) => ({
+export const getRuntimeConfig = (config: CloudWatchEventsClientConfig = {}) => ({
   apiVersion: "2015-10-07",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-cloudwatch-events/runtimeConfig.ts b/clients/client-cloudwatch-events/runtimeConfig.ts
index d3711b4fb70c..3f6b47d7d873 100644
--- a/clients/client-cloudwatch-events/runtimeConfig.ts
+++ b/clients/client-cloudwatch-events/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudWatchEventsClientConfig) => {
+export const getRuntimeConfig = (config: CloudWatchEventsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cloudwatch-logs/runtimeConfig.browser.ts b/clients/client-cloudwatch-logs/runtimeConfig.browser.ts
index 711b786bbd46..0a9110796e66 100644
--- a/clients/client-cloudwatch-logs/runtimeConfig.browser.ts
+++ b/clients/client-cloudwatch-logs/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudWatchLogsClientConfig) => {
+export const getRuntimeConfig = (config: CloudWatchLogsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cloudwatch-logs/runtimeConfig.native.ts b/clients/client-cloudwatch-logs/runtimeConfig.native.ts
index f702eceee478..4cc70339a7a0 100644
--- a/clients/client-cloudwatch-logs/runtimeConfig.native.ts
+++ b/clients/client-cloudwatch-logs/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudWatchLogsClientConfig) => {
+export const getRuntimeConfig = (config: CloudWatchLogsClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-cloudwatch-logs/runtimeConfig.shared.ts b/clients/client-cloudwatch-logs/runtimeConfig.shared.ts
index 17fcc27c2eb3..ffffe32ce211 100644
--- a/clients/client-cloudwatch-logs/runtimeConfig.shared.ts
+++ b/clients/client-cloudwatch-logs/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { CloudWatchLogsClientConfig } from "./CloudWatchLogsClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudWatchLogsClientConfig) => ({
+export const getRuntimeConfig = (config: CloudWatchLogsClientConfig = {}) => ({
   apiVersion: "2014-03-28",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-cloudwatch-logs/runtimeConfig.ts b/clients/client-cloudwatch-logs/runtimeConfig.ts
index df9093a216f6..7810364c8456 100644
--- a/clients/client-cloudwatch-logs/runtimeConfig.ts
+++ b/clients/client-cloudwatch-logs/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudWatchLogsClientConfig) => {
+export const getRuntimeConfig = (config: CloudWatchLogsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cloudwatch/runtimeConfig.browser.ts b/clients/client-cloudwatch/runtimeConfig.browser.ts
index 8a5d59f8467c..6ef6bd56e9c8 100644
--- a/clients/client-cloudwatch/runtimeConfig.browser.ts
+++ b/clients/client-cloudwatch/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudWatchClientConfig) => {
+export const getRuntimeConfig = (config: CloudWatchClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cloudwatch/runtimeConfig.native.ts b/clients/client-cloudwatch/runtimeConfig.native.ts
index 88936e068010..2e2ce4bc7dd7 100644
--- a/clients/client-cloudwatch/runtimeConfig.native.ts
+++ b/clients/client-cloudwatch/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudWatchClientConfig) => {
+export const getRuntimeConfig = (config: CloudWatchClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-cloudwatch/runtimeConfig.shared.ts b/clients/client-cloudwatch/runtimeConfig.shared.ts
index 0cb8e20cb0be..5a05b5efa37d 100644
--- a/clients/client-cloudwatch/runtimeConfig.shared.ts
+++ b/clients/client-cloudwatch/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { CloudWatchClientConfig } from "./CloudWatchClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudWatchClientConfig) => ({
+export const getRuntimeConfig = (config: CloudWatchClientConfig = {}) => ({
   apiVersion: "2010-08-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-cloudwatch/runtimeConfig.ts b/clients/client-cloudwatch/runtimeConfig.ts
index 73df731422cb..9f2a79c8928d 100644
--- a/clients/client-cloudwatch/runtimeConfig.ts
+++ b/clients/client-cloudwatch/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CloudWatchClientConfig) => {
+export const getRuntimeConfig = (config: CloudWatchClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-codeartifact/runtimeConfig.browser.ts b/clients/client-codeartifact/runtimeConfig.browser.ts
index 59da38ec724a..43df92350ce3 100644
--- a/clients/client-codeartifact/runtimeConfig.browser.ts
+++ b/clients/client-codeartifact/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeartifactClientConfig) => {
+export const getRuntimeConfig = (config: CodeartifactClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-codeartifact/runtimeConfig.native.ts b/clients/client-codeartifact/runtimeConfig.native.ts
index 9134d3f19b6d..1986e4dd9b8c 100644
--- a/clients/client-codeartifact/runtimeConfig.native.ts
+++ b/clients/client-codeartifact/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeartifactClientConfig) => {
+export const getRuntimeConfig = (config: CodeartifactClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-codeartifact/runtimeConfig.shared.ts b/clients/client-codeartifact/runtimeConfig.shared.ts
index a03ba08abdfd..4c993ba76075 100644
--- a/clients/client-codeartifact/runtimeConfig.shared.ts
+++ b/clients/client-codeartifact/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { CodeartifactClientConfig } from "./CodeartifactClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeartifactClientConfig) => ({
+export const getRuntimeConfig = (config: CodeartifactClientConfig = {}) => ({
   apiVersion: "2018-09-22",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-codeartifact/runtimeConfig.ts b/clients/client-codeartifact/runtimeConfig.ts
index 04922567d036..c0923533bd7c 100644
--- a/clients/client-codeartifact/runtimeConfig.ts
+++ b/clients/client-codeartifact/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeartifactClientConfig) => {
+export const getRuntimeConfig = (config: CodeartifactClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-codebuild/runtimeConfig.browser.ts b/clients/client-codebuild/runtimeConfig.browser.ts
index 79cb5c96c4a8..46d9484133aa 100644
--- a/clients/client-codebuild/runtimeConfig.browser.ts
+++ b/clients/client-codebuild/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeBuildClientConfig) => {
+export const getRuntimeConfig = (config: CodeBuildClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-codebuild/runtimeConfig.native.ts b/clients/client-codebuild/runtimeConfig.native.ts
index a196e942fd95..c64b8350717c 100644
--- a/clients/client-codebuild/runtimeConfig.native.ts
+++ b/clients/client-codebuild/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeBuildClientConfig) => {
+export const getRuntimeConfig = (config: CodeBuildClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-codebuild/runtimeConfig.shared.ts b/clients/client-codebuild/runtimeConfig.shared.ts
index 97f7006aaab0..a6b3be51f3e3 100644
--- a/clients/client-codebuild/runtimeConfig.shared.ts
+++ b/clients/client-codebuild/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { CodeBuildClientConfig } from "./CodeBuildClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeBuildClientConfig) => ({
+export const getRuntimeConfig = (config: CodeBuildClientConfig = {}) => ({
   apiVersion: "2016-10-06",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-codebuild/runtimeConfig.ts b/clients/client-codebuild/runtimeConfig.ts
index 532416fa19fa..a19f755f87f9 100644
--- a/clients/client-codebuild/runtimeConfig.ts
+++ b/clients/client-codebuild/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeBuildClientConfig) => {
+export const getRuntimeConfig = (config: CodeBuildClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-codecommit/runtimeConfig.browser.ts b/clients/client-codecommit/runtimeConfig.browser.ts
index 455eab4a9ddb..b5590bcdda12 100644
--- a/clients/client-codecommit/runtimeConfig.browser.ts
+++ b/clients/client-codecommit/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeCommitClientConfig) => {
+export const getRuntimeConfig = (config: CodeCommitClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-codecommit/runtimeConfig.native.ts b/clients/client-codecommit/runtimeConfig.native.ts
index 488f92b1a676..8d0226326395 100644
--- a/clients/client-codecommit/runtimeConfig.native.ts
+++ b/clients/client-codecommit/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeCommitClientConfig) => {
+export const getRuntimeConfig = (config: CodeCommitClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-codecommit/runtimeConfig.shared.ts b/clients/client-codecommit/runtimeConfig.shared.ts
index a99f80a0f389..3fd319aaaab6 100644
--- a/clients/client-codecommit/runtimeConfig.shared.ts
+++ b/clients/client-codecommit/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { CodeCommitClientConfig } from "./CodeCommitClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeCommitClientConfig) => ({
+export const getRuntimeConfig = (config: CodeCommitClientConfig = {}) => ({
   apiVersion: "2015-04-13",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-codecommit/runtimeConfig.ts b/clients/client-codecommit/runtimeConfig.ts
index a37a450f1c5d..816227dccb13 100644
--- a/clients/client-codecommit/runtimeConfig.ts
+++ b/clients/client-codecommit/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeCommitClientConfig) => {
+export const getRuntimeConfig = (config: CodeCommitClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-codedeploy/runtimeConfig.browser.ts b/clients/client-codedeploy/runtimeConfig.browser.ts
index ccb4bb6b04e8..a849e05d56d0 100644
--- a/clients/client-codedeploy/runtimeConfig.browser.ts
+++ b/clients/client-codedeploy/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeDeployClientConfig) => {
+export const getRuntimeConfig = (config: CodeDeployClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-codedeploy/runtimeConfig.native.ts b/clients/client-codedeploy/runtimeConfig.native.ts
index 4b0108a9dc39..f851b8fcd41c 100644
--- a/clients/client-codedeploy/runtimeConfig.native.ts
+++ b/clients/client-codedeploy/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeDeployClientConfig) => {
+export const getRuntimeConfig = (config: CodeDeployClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-codedeploy/runtimeConfig.shared.ts b/clients/client-codedeploy/runtimeConfig.shared.ts
index f3a7437c5e00..9ed48fefb22e 100644
--- a/clients/client-codedeploy/runtimeConfig.shared.ts
+++ b/clients/client-codedeploy/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { CodeDeployClientConfig } from "./CodeDeployClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeDeployClientConfig) => ({
+export const getRuntimeConfig = (config: CodeDeployClientConfig = {}) => ({
   apiVersion: "2014-10-06",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-codedeploy/runtimeConfig.ts b/clients/client-codedeploy/runtimeConfig.ts
index b6a9b20ac691..8194f5a85fd9 100644
--- a/clients/client-codedeploy/runtimeConfig.ts
+++ b/clients/client-codedeploy/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeDeployClientConfig) => {
+export const getRuntimeConfig = (config: CodeDeployClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-codeguru-reviewer/runtimeConfig.browser.ts b/clients/client-codeguru-reviewer/runtimeConfig.browser.ts
index 62d370b19e85..1ae2707d3256 100644
--- a/clients/client-codeguru-reviewer/runtimeConfig.browser.ts
+++ b/clients/client-codeguru-reviewer/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeGuruReviewerClientConfig) => {
+export const getRuntimeConfig = (config: CodeGuruReviewerClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-codeguru-reviewer/runtimeConfig.native.ts b/clients/client-codeguru-reviewer/runtimeConfig.native.ts
index 6452f17d3d57..34945c91d03f 100644
--- a/clients/client-codeguru-reviewer/runtimeConfig.native.ts
+++ b/clients/client-codeguru-reviewer/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeGuruReviewerClientConfig) => {
+export const getRuntimeConfig = (config: CodeGuruReviewerClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-codeguru-reviewer/runtimeConfig.shared.ts b/clients/client-codeguru-reviewer/runtimeConfig.shared.ts
index 7d47e1e91aaf..77cacf970caa 100644
--- a/clients/client-codeguru-reviewer/runtimeConfig.shared.ts
+++ b/clients/client-codeguru-reviewer/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { CodeGuruReviewerClientConfig } from "./CodeGuruReviewerClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeGuruReviewerClientConfig) => ({
+export const getRuntimeConfig = (config: CodeGuruReviewerClientConfig = {}) => ({
   apiVersion: "2019-09-19",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-codeguru-reviewer/runtimeConfig.ts b/clients/client-codeguru-reviewer/runtimeConfig.ts
index 6511cd9ffedb..89e5a43639ea 100644
--- a/clients/client-codeguru-reviewer/runtimeConfig.ts
+++ b/clients/client-codeguru-reviewer/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeGuruReviewerClientConfig) => {
+export const getRuntimeConfig = (config: CodeGuruReviewerClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-codeguruprofiler/runtimeConfig.browser.ts b/clients/client-codeguruprofiler/runtimeConfig.browser.ts
index e9ddaf536a7d..e39f56d3a1e3 100644
--- a/clients/client-codeguruprofiler/runtimeConfig.browser.ts
+++ b/clients/client-codeguruprofiler/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeGuruProfilerClientConfig) => {
+export const getRuntimeConfig = (config: CodeGuruProfilerClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-codeguruprofiler/runtimeConfig.native.ts b/clients/client-codeguruprofiler/runtimeConfig.native.ts
index 4f98bd737c64..3a869beebbdb 100644
--- a/clients/client-codeguruprofiler/runtimeConfig.native.ts
+++ b/clients/client-codeguruprofiler/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeGuruProfilerClientConfig) => {
+export const getRuntimeConfig = (config: CodeGuruProfilerClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-codeguruprofiler/runtimeConfig.shared.ts b/clients/client-codeguruprofiler/runtimeConfig.shared.ts
index 2e37e581700d..47d67e6c3981 100644
--- a/clients/client-codeguruprofiler/runtimeConfig.shared.ts
+++ b/clients/client-codeguruprofiler/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { CodeGuruProfilerClientConfig } from "./CodeGuruProfilerClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeGuruProfilerClientConfig) => ({
+export const getRuntimeConfig = (config: CodeGuruProfilerClientConfig = {}) => ({
   apiVersion: "2019-07-18",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-codeguruprofiler/runtimeConfig.ts b/clients/client-codeguruprofiler/runtimeConfig.ts
index 59e085e448c5..07dd824c752a 100644
--- a/clients/client-codeguruprofiler/runtimeConfig.ts
+++ b/clients/client-codeguruprofiler/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeGuruProfilerClientConfig) => {
+export const getRuntimeConfig = (config: CodeGuruProfilerClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-codepipeline/runtimeConfig.browser.ts b/clients/client-codepipeline/runtimeConfig.browser.ts
index 1f2d8a72e153..bfaba3f67ef7 100644
--- a/clients/client-codepipeline/runtimeConfig.browser.ts
+++ b/clients/client-codepipeline/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodePipelineClientConfig) => {
+export const getRuntimeConfig = (config: CodePipelineClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-codepipeline/runtimeConfig.native.ts b/clients/client-codepipeline/runtimeConfig.native.ts
index 4fcffa0cedca..240f7e03a0f6 100644
--- a/clients/client-codepipeline/runtimeConfig.native.ts
+++ b/clients/client-codepipeline/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodePipelineClientConfig) => {
+export const getRuntimeConfig = (config: CodePipelineClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-codepipeline/runtimeConfig.shared.ts b/clients/client-codepipeline/runtimeConfig.shared.ts
index eb5b492ca6f0..06190e493aed 100644
--- a/clients/client-codepipeline/runtimeConfig.shared.ts
+++ b/clients/client-codepipeline/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { CodePipelineClientConfig } from "./CodePipelineClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodePipelineClientConfig) => ({
+export const getRuntimeConfig = (config: CodePipelineClientConfig = {}) => ({
   apiVersion: "2015-07-09",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-codepipeline/runtimeConfig.ts b/clients/client-codepipeline/runtimeConfig.ts
index be6cf1afaa71..ab05e4a04bfb 100644
--- a/clients/client-codepipeline/runtimeConfig.ts
+++ b/clients/client-codepipeline/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodePipelineClientConfig) => {
+export const getRuntimeConfig = (config: CodePipelineClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-codestar-connections/runtimeConfig.browser.ts b/clients/client-codestar-connections/runtimeConfig.browser.ts
index cff9ae1eedf9..5f2af0318489 100644
--- a/clients/client-codestar-connections/runtimeConfig.browser.ts
+++ b/clients/client-codestar-connections/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeStarConnectionsClientConfig) => {
+export const getRuntimeConfig = (config: CodeStarConnectionsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-codestar-connections/runtimeConfig.native.ts b/clients/client-codestar-connections/runtimeConfig.native.ts
index 2c8cea23c005..cdfb57473411 100644
--- a/clients/client-codestar-connections/runtimeConfig.native.ts
+++ b/clients/client-codestar-connections/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeStarConnectionsClientConfig) => {
+export const getRuntimeConfig = (config: CodeStarConnectionsClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-codestar-connections/runtimeConfig.shared.ts b/clients/client-codestar-connections/runtimeConfig.shared.ts
index f03d78bea11c..522f1df0fc9d 100644
--- a/clients/client-codestar-connections/runtimeConfig.shared.ts
+++ b/clients/client-codestar-connections/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { CodeStarConnectionsClientConfig } from "./CodeStarConnectionsClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeStarConnectionsClientConfig) => ({
+export const getRuntimeConfig = (config: CodeStarConnectionsClientConfig = {}) => ({
   apiVersion: "2019-12-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-codestar-connections/runtimeConfig.ts b/clients/client-codestar-connections/runtimeConfig.ts
index 562fb403f756..d0ffbbf126e8 100644
--- a/clients/client-codestar-connections/runtimeConfig.ts
+++ b/clients/client-codestar-connections/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeStarConnectionsClientConfig) => {
+export const getRuntimeConfig = (config: CodeStarConnectionsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-codestar-notifications/runtimeConfig.browser.ts b/clients/client-codestar-notifications/runtimeConfig.browser.ts
index 6697827f2f44..45e30900410a 100644
--- a/clients/client-codestar-notifications/runtimeConfig.browser.ts
+++ b/clients/client-codestar-notifications/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodestarNotificationsClientConfig) => {
+export const getRuntimeConfig = (config: CodestarNotificationsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-codestar-notifications/runtimeConfig.native.ts b/clients/client-codestar-notifications/runtimeConfig.native.ts
index 92bbb37555ec..211378a22f60 100644
--- a/clients/client-codestar-notifications/runtimeConfig.native.ts
+++ b/clients/client-codestar-notifications/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodestarNotificationsClientConfig) => {
+export const getRuntimeConfig = (config: CodestarNotificationsClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-codestar-notifications/runtimeConfig.shared.ts b/clients/client-codestar-notifications/runtimeConfig.shared.ts
index 53c0e07df1ba..be9d515b24ed 100644
--- a/clients/client-codestar-notifications/runtimeConfig.shared.ts
+++ b/clients/client-codestar-notifications/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { CodestarNotificationsClientConfig } from "./CodestarNotificationsClient
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodestarNotificationsClientConfig) => ({
+export const getRuntimeConfig = (config: CodestarNotificationsClientConfig = {}) => ({
   apiVersion: "2019-10-15",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-codestar-notifications/runtimeConfig.ts b/clients/client-codestar-notifications/runtimeConfig.ts
index 9775a76fb3be..d95916324a6d 100644
--- a/clients/client-codestar-notifications/runtimeConfig.ts
+++ b/clients/client-codestar-notifications/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodestarNotificationsClientConfig) => {
+export const getRuntimeConfig = (config: CodestarNotificationsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-codestar/runtimeConfig.browser.ts b/clients/client-codestar/runtimeConfig.browser.ts
index 0ccfc63ebddd..177013a8621c 100644
--- a/clients/client-codestar/runtimeConfig.browser.ts
+++ b/clients/client-codestar/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeStarClientConfig) => {
+export const getRuntimeConfig = (config: CodeStarClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-codestar/runtimeConfig.native.ts b/clients/client-codestar/runtimeConfig.native.ts
index a73fdec1c940..585196a803c5 100644
--- a/clients/client-codestar/runtimeConfig.native.ts
+++ b/clients/client-codestar/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeStarClientConfig) => {
+export const getRuntimeConfig = (config: CodeStarClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-codestar/runtimeConfig.shared.ts b/clients/client-codestar/runtimeConfig.shared.ts
index 1f5861569efd..5ef1771f43d5 100644
--- a/clients/client-codestar/runtimeConfig.shared.ts
+++ b/clients/client-codestar/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { CodeStarClientConfig } from "./CodeStarClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeStarClientConfig) => ({
+export const getRuntimeConfig = (config: CodeStarClientConfig = {}) => ({
   apiVersion: "2017-04-19",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-codestar/runtimeConfig.ts b/clients/client-codestar/runtimeConfig.ts
index 35edad1cb009..b3de49f630e5 100644
--- a/clients/client-codestar/runtimeConfig.ts
+++ b/clients/client-codestar/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CodeStarClientConfig) => {
+export const getRuntimeConfig = (config: CodeStarClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cognito-identity-provider/runtimeConfig.browser.ts b/clients/client-cognito-identity-provider/runtimeConfig.browser.ts
index 63d75f1db140..8670f3269909 100644
--- a/clients/client-cognito-identity-provider/runtimeConfig.browser.ts
+++ b/clients/client-cognito-identity-provider/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CognitoIdentityProviderClientConfig) => {
+export const getRuntimeConfig = (config: CognitoIdentityProviderClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cognito-identity-provider/runtimeConfig.native.ts b/clients/client-cognito-identity-provider/runtimeConfig.native.ts
index d74cf9b0a664..1dd12ae4ffa3 100644
--- a/clients/client-cognito-identity-provider/runtimeConfig.native.ts
+++ b/clients/client-cognito-identity-provider/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CognitoIdentityProviderClientConfig) => {
+export const getRuntimeConfig = (config: CognitoIdentityProviderClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-cognito-identity-provider/runtimeConfig.shared.ts b/clients/client-cognito-identity-provider/runtimeConfig.shared.ts
index f7bfd581c863..192dd4e95302 100644
--- a/clients/client-cognito-identity-provider/runtimeConfig.shared.ts
+++ b/clients/client-cognito-identity-provider/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { CognitoIdentityProviderClientConfig } from "./CognitoIdentityProviderCl
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CognitoIdentityProviderClientConfig) => ({
+export const getRuntimeConfig = (config: CognitoIdentityProviderClientConfig = {}) => ({
   apiVersion: "2016-04-18",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-cognito-identity-provider/runtimeConfig.ts b/clients/client-cognito-identity-provider/runtimeConfig.ts
index f86ac94c0bbe..86b9453208d1 100644
--- a/clients/client-cognito-identity-provider/runtimeConfig.ts
+++ b/clients/client-cognito-identity-provider/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CognitoIdentityProviderClientConfig) => {
+export const getRuntimeConfig = (config: CognitoIdentityProviderClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cognito-identity/runtimeConfig.browser.ts b/clients/client-cognito-identity/runtimeConfig.browser.ts
index b928751e10d4..1d03b8321824 100644
--- a/clients/client-cognito-identity/runtimeConfig.browser.ts
+++ b/clients/client-cognito-identity/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CognitoIdentityClientConfig) => {
+export const getRuntimeConfig = (config: CognitoIdentityClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cognito-identity/runtimeConfig.native.ts b/clients/client-cognito-identity/runtimeConfig.native.ts
index 4fefa77ed160..8e481d66dc88 100644
--- a/clients/client-cognito-identity/runtimeConfig.native.ts
+++ b/clients/client-cognito-identity/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CognitoIdentityClientConfig) => {
+export const getRuntimeConfig = (config: CognitoIdentityClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-cognito-identity/runtimeConfig.shared.ts b/clients/client-cognito-identity/runtimeConfig.shared.ts
index 5c934131a68c..371f5ae0bb1f 100644
--- a/clients/client-cognito-identity/runtimeConfig.shared.ts
+++ b/clients/client-cognito-identity/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { CognitoIdentityClientConfig } from "./CognitoIdentityClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CognitoIdentityClientConfig) => ({
+export const getRuntimeConfig = (config: CognitoIdentityClientConfig = {}) => ({
   apiVersion: "2014-06-30",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-cognito-identity/runtimeConfig.ts b/clients/client-cognito-identity/runtimeConfig.ts
index 3a79b257e588..7500a2c92fbb 100644
--- a/clients/client-cognito-identity/runtimeConfig.ts
+++ b/clients/client-cognito-identity/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CognitoIdentityClientConfig) => {
+export const getRuntimeConfig = (config: CognitoIdentityClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cognito-sync/runtimeConfig.browser.ts b/clients/client-cognito-sync/runtimeConfig.browser.ts
index 8e775f19c423..d1fe5a6e83e4 100644
--- a/clients/client-cognito-sync/runtimeConfig.browser.ts
+++ b/clients/client-cognito-sync/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CognitoSyncClientConfig) => {
+export const getRuntimeConfig = (config: CognitoSyncClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cognito-sync/runtimeConfig.native.ts b/clients/client-cognito-sync/runtimeConfig.native.ts
index 477e9c79eba2..1e2b124a67f1 100644
--- a/clients/client-cognito-sync/runtimeConfig.native.ts
+++ b/clients/client-cognito-sync/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CognitoSyncClientConfig) => {
+export const getRuntimeConfig = (config: CognitoSyncClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-cognito-sync/runtimeConfig.shared.ts b/clients/client-cognito-sync/runtimeConfig.shared.ts
index 95424ae31495..0e58f5484621 100644
--- a/clients/client-cognito-sync/runtimeConfig.shared.ts
+++ b/clients/client-cognito-sync/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { CognitoSyncClientConfig } from "./CognitoSyncClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CognitoSyncClientConfig) => ({
+export const getRuntimeConfig = (config: CognitoSyncClientConfig = {}) => ({
   apiVersion: "2014-06-30",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-cognito-sync/runtimeConfig.ts b/clients/client-cognito-sync/runtimeConfig.ts
index 3c150945c428..3f5bf09c8d8d 100644
--- a/clients/client-cognito-sync/runtimeConfig.ts
+++ b/clients/client-cognito-sync/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CognitoSyncClientConfig) => {
+export const getRuntimeConfig = (config: CognitoSyncClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-comprehend/runtimeConfig.browser.ts b/clients/client-comprehend/runtimeConfig.browser.ts
index 55d017877341..e80d08755aac 100644
--- a/clients/client-comprehend/runtimeConfig.browser.ts
+++ b/clients/client-comprehend/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ComprehendClientConfig) => {
+export const getRuntimeConfig = (config: ComprehendClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-comprehend/runtimeConfig.native.ts b/clients/client-comprehend/runtimeConfig.native.ts
index f5e80e54efd1..9f0aa39bada2 100644
--- a/clients/client-comprehend/runtimeConfig.native.ts
+++ b/clients/client-comprehend/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ComprehendClientConfig) => {
+export const getRuntimeConfig = (config: ComprehendClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-comprehend/runtimeConfig.shared.ts b/clients/client-comprehend/runtimeConfig.shared.ts
index 5818b4127e2f..5ea72e6b7637 100644
--- a/clients/client-comprehend/runtimeConfig.shared.ts
+++ b/clients/client-comprehend/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ComprehendClientConfig } from "./ComprehendClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ComprehendClientConfig) => ({
+export const getRuntimeConfig = (config: ComprehendClientConfig = {}) => ({
   apiVersion: "2017-11-27",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-comprehend/runtimeConfig.ts b/clients/client-comprehend/runtimeConfig.ts
index f4d9210eb8d5..ad4bbba5f4a3 100644
--- a/clients/client-comprehend/runtimeConfig.ts
+++ b/clients/client-comprehend/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ComprehendClientConfig) => {
+export const getRuntimeConfig = (config: ComprehendClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-comprehendmedical/runtimeConfig.browser.ts b/clients/client-comprehendmedical/runtimeConfig.browser.ts
index be62058ff57e..ed17f5a2a1b3 100644
--- a/clients/client-comprehendmedical/runtimeConfig.browser.ts
+++ b/clients/client-comprehendmedical/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ComprehendMedicalClientConfig) => {
+export const getRuntimeConfig = (config: ComprehendMedicalClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-comprehendmedical/runtimeConfig.native.ts b/clients/client-comprehendmedical/runtimeConfig.native.ts
index 0b05c2ceed14..e4b0391b6300 100644
--- a/clients/client-comprehendmedical/runtimeConfig.native.ts
+++ b/clients/client-comprehendmedical/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ComprehendMedicalClientConfig) => {
+export const getRuntimeConfig = (config: ComprehendMedicalClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-comprehendmedical/runtimeConfig.shared.ts b/clients/client-comprehendmedical/runtimeConfig.shared.ts
index 2f2408774668..f7a67b9367de 100644
--- a/clients/client-comprehendmedical/runtimeConfig.shared.ts
+++ b/clients/client-comprehendmedical/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ComprehendMedicalClientConfig } from "./ComprehendMedicalClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ComprehendMedicalClientConfig) => ({
+export const getRuntimeConfig = (config: ComprehendMedicalClientConfig = {}) => ({
   apiVersion: "2018-10-30",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-comprehendmedical/runtimeConfig.ts b/clients/client-comprehendmedical/runtimeConfig.ts
index 75cb2636da91..7cc7b8c6733f 100644
--- a/clients/client-comprehendmedical/runtimeConfig.ts
+++ b/clients/client-comprehendmedical/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ComprehendMedicalClientConfig) => {
+export const getRuntimeConfig = (config: ComprehendMedicalClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-compute-optimizer/runtimeConfig.browser.ts b/clients/client-compute-optimizer/runtimeConfig.browser.ts
index 463cd5ed4b29..e02d03c81d87 100644
--- a/clients/client-compute-optimizer/runtimeConfig.browser.ts
+++ b/clients/client-compute-optimizer/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ComputeOptimizerClientConfig) => {
+export const getRuntimeConfig = (config: ComputeOptimizerClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-compute-optimizer/runtimeConfig.native.ts b/clients/client-compute-optimizer/runtimeConfig.native.ts
index b5d92c3c32d5..e9e3c6a6b69d 100644
--- a/clients/client-compute-optimizer/runtimeConfig.native.ts
+++ b/clients/client-compute-optimizer/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ComputeOptimizerClientConfig) => {
+export const getRuntimeConfig = (config: ComputeOptimizerClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-compute-optimizer/runtimeConfig.shared.ts b/clients/client-compute-optimizer/runtimeConfig.shared.ts
index 57d7512e3d43..848486ab4fa9 100644
--- a/clients/client-compute-optimizer/runtimeConfig.shared.ts
+++ b/clients/client-compute-optimizer/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ComputeOptimizerClientConfig } from "./ComputeOptimizerClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ComputeOptimizerClientConfig) => ({
+export const getRuntimeConfig = (config: ComputeOptimizerClientConfig = {}) => ({
   apiVersion: "2019-11-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-compute-optimizer/runtimeConfig.ts b/clients/client-compute-optimizer/runtimeConfig.ts
index 2fb5f95a280b..8f1bd497d0cc 100644
--- a/clients/client-compute-optimizer/runtimeConfig.ts
+++ b/clients/client-compute-optimizer/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ComputeOptimizerClientConfig) => {
+export const getRuntimeConfig = (config: ComputeOptimizerClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-config-service/runtimeConfig.browser.ts b/clients/client-config-service/runtimeConfig.browser.ts
index 40a30fde70f4..59c7742d51c4 100644
--- a/clients/client-config-service/runtimeConfig.browser.ts
+++ b/clients/client-config-service/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ConfigServiceClientConfig) => {
+export const getRuntimeConfig = (config: ConfigServiceClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-config-service/runtimeConfig.native.ts b/clients/client-config-service/runtimeConfig.native.ts
index fe557cd6e4f2..4d5677863200 100644
--- a/clients/client-config-service/runtimeConfig.native.ts
+++ b/clients/client-config-service/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ConfigServiceClientConfig) => {
+export const getRuntimeConfig = (config: ConfigServiceClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-config-service/runtimeConfig.shared.ts b/clients/client-config-service/runtimeConfig.shared.ts
index 699c6b0090e2..3b0c82ee77b5 100644
--- a/clients/client-config-service/runtimeConfig.shared.ts
+++ b/clients/client-config-service/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ConfigServiceClientConfig } from "./ConfigServiceClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ConfigServiceClientConfig) => ({
+export const getRuntimeConfig = (config: ConfigServiceClientConfig = {}) => ({
   apiVersion: "2014-11-12",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-config-service/runtimeConfig.ts b/clients/client-config-service/runtimeConfig.ts
index 3d8a9671fcba..f5475645da01 100644
--- a/clients/client-config-service/runtimeConfig.ts
+++ b/clients/client-config-service/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ConfigServiceClientConfig) => {
+export const getRuntimeConfig = (config: ConfigServiceClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-connect-contact-lens/runtimeConfig.browser.ts b/clients/client-connect-contact-lens/runtimeConfig.browser.ts
index 571cee436c20..c75b92c99e48 100644
--- a/clients/client-connect-contact-lens/runtimeConfig.browser.ts
+++ b/clients/client-connect-contact-lens/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ConnectContactLensClientConfig) => {
+export const getRuntimeConfig = (config: ConnectContactLensClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-connect-contact-lens/runtimeConfig.native.ts b/clients/client-connect-contact-lens/runtimeConfig.native.ts
index d5b63ba6b50d..e61f71515be9 100644
--- a/clients/client-connect-contact-lens/runtimeConfig.native.ts
+++ b/clients/client-connect-contact-lens/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ConnectContactLensClientConfig) => {
+export const getRuntimeConfig = (config: ConnectContactLensClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-connect-contact-lens/runtimeConfig.shared.ts b/clients/client-connect-contact-lens/runtimeConfig.shared.ts
index 0f7b1ffa90fc..005ff1df1a58 100644
--- a/clients/client-connect-contact-lens/runtimeConfig.shared.ts
+++ b/clients/client-connect-contact-lens/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ConnectContactLensClientConfig } from "./ConnectContactLensClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ConnectContactLensClientConfig) => ({
+export const getRuntimeConfig = (config: ConnectContactLensClientConfig = {}) => ({
   apiVersion: "2020-08-21",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-connect-contact-lens/runtimeConfig.ts b/clients/client-connect-contact-lens/runtimeConfig.ts
index 7de77b8e6465..b909b7da02e6 100644
--- a/clients/client-connect-contact-lens/runtimeConfig.ts
+++ b/clients/client-connect-contact-lens/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ConnectContactLensClientConfig) => {
+export const getRuntimeConfig = (config: ConnectContactLensClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-connect/runtimeConfig.browser.ts b/clients/client-connect/runtimeConfig.browser.ts
index 1d832d6471cb..de7f1cb935dd 100644
--- a/clients/client-connect/runtimeConfig.browser.ts
+++ b/clients/client-connect/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ConnectClientConfig) => {
+export const getRuntimeConfig = (config: ConnectClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-connect/runtimeConfig.native.ts b/clients/client-connect/runtimeConfig.native.ts
index 8c3b2212bfe6..741cbc9d1be0 100644
--- a/clients/client-connect/runtimeConfig.native.ts
+++ b/clients/client-connect/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ConnectClientConfig) => {
+export const getRuntimeConfig = (config: ConnectClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-connect/runtimeConfig.shared.ts b/clients/client-connect/runtimeConfig.shared.ts
index 56359a9a3c51..d3b13f1604b8 100644
--- a/clients/client-connect/runtimeConfig.shared.ts
+++ b/clients/client-connect/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ConnectClientConfig } from "./ConnectClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ConnectClientConfig) => ({
+export const getRuntimeConfig = (config: ConnectClientConfig = {}) => ({
   apiVersion: "2017-08-08",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-connect/runtimeConfig.ts b/clients/client-connect/runtimeConfig.ts
index d7888b4daa0f..fbba6c2965fe 100644
--- a/clients/client-connect/runtimeConfig.ts
+++ b/clients/client-connect/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ConnectClientConfig) => {
+export const getRuntimeConfig = (config: ConnectClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-connectparticipant/runtimeConfig.browser.ts b/clients/client-connectparticipant/runtimeConfig.browser.ts
index b349be3166df..346d2bbf7cb0 100644
--- a/clients/client-connectparticipant/runtimeConfig.browser.ts
+++ b/clients/client-connectparticipant/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ConnectParticipantClientConfig) => {
+export const getRuntimeConfig = (config: ConnectParticipantClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-connectparticipant/runtimeConfig.native.ts b/clients/client-connectparticipant/runtimeConfig.native.ts
index ff2985ace01f..ed0ccdac0c9e 100644
--- a/clients/client-connectparticipant/runtimeConfig.native.ts
+++ b/clients/client-connectparticipant/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ConnectParticipantClientConfig) => {
+export const getRuntimeConfig = (config: ConnectParticipantClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-connectparticipant/runtimeConfig.shared.ts b/clients/client-connectparticipant/runtimeConfig.shared.ts
index c077cf8056a1..f08b12bf0580 100644
--- a/clients/client-connectparticipant/runtimeConfig.shared.ts
+++ b/clients/client-connectparticipant/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ConnectParticipantClientConfig } from "./ConnectParticipantClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ConnectParticipantClientConfig) => ({
+export const getRuntimeConfig = (config: ConnectParticipantClientConfig = {}) => ({
   apiVersion: "2018-09-07",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-connectparticipant/runtimeConfig.ts b/clients/client-connectparticipant/runtimeConfig.ts
index f194df2fcc2b..63c00f64ef2b 100644
--- a/clients/client-connectparticipant/runtimeConfig.ts
+++ b/clients/client-connectparticipant/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ConnectParticipantClientConfig) => {
+export const getRuntimeConfig = (config: ConnectParticipantClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cost-and-usage-report-service/runtimeConfig.browser.ts b/clients/client-cost-and-usage-report-service/runtimeConfig.browser.ts
index 788d4cba961b..02e6d63ce1c8 100644
--- a/clients/client-cost-and-usage-report-service/runtimeConfig.browser.ts
+++ b/clients/client-cost-and-usage-report-service/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CostAndUsageReportServiceClientConfig) => {
+export const getRuntimeConfig = (config: CostAndUsageReportServiceClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cost-and-usage-report-service/runtimeConfig.native.ts b/clients/client-cost-and-usage-report-service/runtimeConfig.native.ts
index bec508c37c39..813070a60218 100644
--- a/clients/client-cost-and-usage-report-service/runtimeConfig.native.ts
+++ b/clients/client-cost-and-usage-report-service/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CostAndUsageReportServiceClientConfig) => {
+export const getRuntimeConfig = (config: CostAndUsageReportServiceClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-cost-and-usage-report-service/runtimeConfig.shared.ts b/clients/client-cost-and-usage-report-service/runtimeConfig.shared.ts
index 7a26edc74f75..3049fd27fc99 100644
--- a/clients/client-cost-and-usage-report-service/runtimeConfig.shared.ts
+++ b/clients/client-cost-and-usage-report-service/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { CostAndUsageReportServiceClientConfig } from "./CostAndUsageReportServi
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CostAndUsageReportServiceClientConfig) => ({
+export const getRuntimeConfig = (config: CostAndUsageReportServiceClientConfig = {}) => ({
   apiVersion: "2017-01-06",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-cost-and-usage-report-service/runtimeConfig.ts b/clients/client-cost-and-usage-report-service/runtimeConfig.ts
index ad5422df17b5..5635b4317a4d 100644
--- a/clients/client-cost-and-usage-report-service/runtimeConfig.ts
+++ b/clients/client-cost-and-usage-report-service/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CostAndUsageReportServiceClientConfig) => {
+export const getRuntimeConfig = (config: CostAndUsageReportServiceClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cost-explorer/runtimeConfig.browser.ts b/clients/client-cost-explorer/runtimeConfig.browser.ts
index 4a9bd25ddc97..849377dde1ce 100644
--- a/clients/client-cost-explorer/runtimeConfig.browser.ts
+++ b/clients/client-cost-explorer/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CostExplorerClientConfig) => {
+export const getRuntimeConfig = (config: CostExplorerClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-cost-explorer/runtimeConfig.native.ts b/clients/client-cost-explorer/runtimeConfig.native.ts
index 6175b496c44c..f144e58637a0 100644
--- a/clients/client-cost-explorer/runtimeConfig.native.ts
+++ b/clients/client-cost-explorer/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CostExplorerClientConfig) => {
+export const getRuntimeConfig = (config: CostExplorerClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-cost-explorer/runtimeConfig.shared.ts b/clients/client-cost-explorer/runtimeConfig.shared.ts
index 4ae8b043dde5..584143616cc2 100644
--- a/clients/client-cost-explorer/runtimeConfig.shared.ts
+++ b/clients/client-cost-explorer/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { CostExplorerClientConfig } from "./CostExplorerClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CostExplorerClientConfig) => ({
+export const getRuntimeConfig = (config: CostExplorerClientConfig = {}) => ({
   apiVersion: "2017-10-25",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-cost-explorer/runtimeConfig.ts b/clients/client-cost-explorer/runtimeConfig.ts
index bef5cf7eb18d..b3f578694854 100644
--- a/clients/client-cost-explorer/runtimeConfig.ts
+++ b/clients/client-cost-explorer/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CostExplorerClientConfig) => {
+export const getRuntimeConfig = (config: CostExplorerClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-customer-profiles/runtimeConfig.browser.ts b/clients/client-customer-profiles/runtimeConfig.browser.ts
index bb3571391f0f..2aa2086a8ad0 100644
--- a/clients/client-customer-profiles/runtimeConfig.browser.ts
+++ b/clients/client-customer-profiles/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CustomerProfilesClientConfig) => {
+export const getRuntimeConfig = (config: CustomerProfilesClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-customer-profiles/runtimeConfig.native.ts b/clients/client-customer-profiles/runtimeConfig.native.ts
index a7df02fcacf0..a43fe9581dfa 100644
--- a/clients/client-customer-profiles/runtimeConfig.native.ts
+++ b/clients/client-customer-profiles/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CustomerProfilesClientConfig) => {
+export const getRuntimeConfig = (config: CustomerProfilesClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-customer-profiles/runtimeConfig.shared.ts b/clients/client-customer-profiles/runtimeConfig.shared.ts
index 00928c07418c..8e316ea558f3 100644
--- a/clients/client-customer-profiles/runtimeConfig.shared.ts
+++ b/clients/client-customer-profiles/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { CustomerProfilesClientConfig } from "./CustomerProfilesClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CustomerProfilesClientConfig) => ({
+export const getRuntimeConfig = (config: CustomerProfilesClientConfig = {}) => ({
   apiVersion: "2020-08-15",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-customer-profiles/runtimeConfig.ts b/clients/client-customer-profiles/runtimeConfig.ts
index d8dbf7eee35b..c80f3beed9ed 100644
--- a/clients/client-customer-profiles/runtimeConfig.ts
+++ b/clients/client-customer-profiles/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: CustomerProfilesClientConfig) => {
+export const getRuntimeConfig = (config: CustomerProfilesClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-data-pipeline/runtimeConfig.browser.ts b/clients/client-data-pipeline/runtimeConfig.browser.ts
index e4d57aea29be..68a31b28db72 100644
--- a/clients/client-data-pipeline/runtimeConfig.browser.ts
+++ b/clients/client-data-pipeline/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DataPipelineClientConfig) => {
+export const getRuntimeConfig = (config: DataPipelineClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-data-pipeline/runtimeConfig.native.ts b/clients/client-data-pipeline/runtimeConfig.native.ts
index 0e6b49560bfd..578bcc64ebef 100644
--- a/clients/client-data-pipeline/runtimeConfig.native.ts
+++ b/clients/client-data-pipeline/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DataPipelineClientConfig) => {
+export const getRuntimeConfig = (config: DataPipelineClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-data-pipeline/runtimeConfig.shared.ts b/clients/client-data-pipeline/runtimeConfig.shared.ts
index d4338f572b76..76db3ee8f59b 100644
--- a/clients/client-data-pipeline/runtimeConfig.shared.ts
+++ b/clients/client-data-pipeline/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { DataPipelineClientConfig } from "./DataPipelineClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DataPipelineClientConfig) => ({
+export const getRuntimeConfig = (config: DataPipelineClientConfig = {}) => ({
   apiVersion: "2012-10-29",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-data-pipeline/runtimeConfig.ts b/clients/client-data-pipeline/runtimeConfig.ts
index 36fb50f51ec6..1ad39dc3ac8e 100644
--- a/clients/client-data-pipeline/runtimeConfig.ts
+++ b/clients/client-data-pipeline/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DataPipelineClientConfig) => {
+export const getRuntimeConfig = (config: DataPipelineClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-database-migration-service/runtimeConfig.browser.ts b/clients/client-database-migration-service/runtimeConfig.browser.ts
index 17f10e430412..b7406cb22f5d 100644
--- a/clients/client-database-migration-service/runtimeConfig.browser.ts
+++ b/clients/client-database-migration-service/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DatabaseMigrationServiceClientConfig) => {
+export const getRuntimeConfig = (config: DatabaseMigrationServiceClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-database-migration-service/runtimeConfig.native.ts b/clients/client-database-migration-service/runtimeConfig.native.ts
index 0fbcf65ac3c0..e7fd686def3e 100644
--- a/clients/client-database-migration-service/runtimeConfig.native.ts
+++ b/clients/client-database-migration-service/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DatabaseMigrationServiceClientConfig) => {
+export const getRuntimeConfig = (config: DatabaseMigrationServiceClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-database-migration-service/runtimeConfig.shared.ts b/clients/client-database-migration-service/runtimeConfig.shared.ts
index 1a22deed676d..a05e3ff1c042 100644
--- a/clients/client-database-migration-service/runtimeConfig.shared.ts
+++ b/clients/client-database-migration-service/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { DatabaseMigrationServiceClientConfig } from "./DatabaseMigrationService
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DatabaseMigrationServiceClientConfig) => ({
+export const getRuntimeConfig = (config: DatabaseMigrationServiceClientConfig = {}) => ({
   apiVersion: "2016-01-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-database-migration-service/runtimeConfig.ts b/clients/client-database-migration-service/runtimeConfig.ts
index cccb10a03137..4e01501396f4 100644
--- a/clients/client-database-migration-service/runtimeConfig.ts
+++ b/clients/client-database-migration-service/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DatabaseMigrationServiceClientConfig) => {
+export const getRuntimeConfig = (config: DatabaseMigrationServiceClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-databrew/runtimeConfig.browser.ts b/clients/client-databrew/runtimeConfig.browser.ts
index 62100bc8a454..849090f12801 100644
--- a/clients/client-databrew/runtimeConfig.browser.ts
+++ b/clients/client-databrew/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DataBrewClientConfig) => {
+export const getRuntimeConfig = (config: DataBrewClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-databrew/runtimeConfig.native.ts b/clients/client-databrew/runtimeConfig.native.ts
index e38ce4273968..b373e44050e2 100644
--- a/clients/client-databrew/runtimeConfig.native.ts
+++ b/clients/client-databrew/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DataBrewClientConfig) => {
+export const getRuntimeConfig = (config: DataBrewClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-databrew/runtimeConfig.shared.ts b/clients/client-databrew/runtimeConfig.shared.ts
index 112131f119e6..21ad64b61f26 100644
--- a/clients/client-databrew/runtimeConfig.shared.ts
+++ b/clients/client-databrew/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { DataBrewClientConfig } from "./DataBrewClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DataBrewClientConfig) => ({
+export const getRuntimeConfig = (config: DataBrewClientConfig = {}) => ({
   apiVersion: "2017-07-25",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-databrew/runtimeConfig.ts b/clients/client-databrew/runtimeConfig.ts
index 5a4e2bb4497a..d1e5f3e46345 100644
--- a/clients/client-databrew/runtimeConfig.ts
+++ b/clients/client-databrew/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DataBrewClientConfig) => {
+export const getRuntimeConfig = (config: DataBrewClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-dataexchange/runtimeConfig.browser.ts b/clients/client-dataexchange/runtimeConfig.browser.ts
index 05286455ae15..5fc3f03fba9c 100644
--- a/clients/client-dataexchange/runtimeConfig.browser.ts
+++ b/clients/client-dataexchange/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DataExchangeClientConfig) => {
+export const getRuntimeConfig = (config: DataExchangeClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-dataexchange/runtimeConfig.native.ts b/clients/client-dataexchange/runtimeConfig.native.ts
index 28609c42eae8..dc838ba9175c 100644
--- a/clients/client-dataexchange/runtimeConfig.native.ts
+++ b/clients/client-dataexchange/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DataExchangeClientConfig) => {
+export const getRuntimeConfig = (config: DataExchangeClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-dataexchange/runtimeConfig.shared.ts b/clients/client-dataexchange/runtimeConfig.shared.ts
index 068f6cb826e8..4ae8adf7400d 100644
--- a/clients/client-dataexchange/runtimeConfig.shared.ts
+++ b/clients/client-dataexchange/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { DataExchangeClientConfig } from "./DataExchangeClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DataExchangeClientConfig) => ({
+export const getRuntimeConfig = (config: DataExchangeClientConfig = {}) => ({
   apiVersion: "2017-07-25",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-dataexchange/runtimeConfig.ts b/clients/client-dataexchange/runtimeConfig.ts
index 5b479c22528c..b656f4f0a6cf 100644
--- a/clients/client-dataexchange/runtimeConfig.ts
+++ b/clients/client-dataexchange/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DataExchangeClientConfig) => {
+export const getRuntimeConfig = (config: DataExchangeClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-datasync/runtimeConfig.browser.ts b/clients/client-datasync/runtimeConfig.browser.ts
index 36c3826bc6bc..d156767f225b 100644
--- a/clients/client-datasync/runtimeConfig.browser.ts
+++ b/clients/client-datasync/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DataSyncClientConfig) => {
+export const getRuntimeConfig = (config: DataSyncClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-datasync/runtimeConfig.native.ts b/clients/client-datasync/runtimeConfig.native.ts
index e369b625b83b..4f60a269b5c5 100644
--- a/clients/client-datasync/runtimeConfig.native.ts
+++ b/clients/client-datasync/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DataSyncClientConfig) => {
+export const getRuntimeConfig = (config: DataSyncClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-datasync/runtimeConfig.shared.ts b/clients/client-datasync/runtimeConfig.shared.ts
index f9cdf5b39a91..fd0774dc5d97 100644
--- a/clients/client-datasync/runtimeConfig.shared.ts
+++ b/clients/client-datasync/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { DataSyncClientConfig } from "./DataSyncClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DataSyncClientConfig) => ({
+export const getRuntimeConfig = (config: DataSyncClientConfig = {}) => ({
   apiVersion: "2018-11-09",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-datasync/runtimeConfig.ts b/clients/client-datasync/runtimeConfig.ts
index 059eb56a2102..e9aafd6d0d60 100644
--- a/clients/client-datasync/runtimeConfig.ts
+++ b/clients/client-datasync/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DataSyncClientConfig) => {
+export const getRuntimeConfig = (config: DataSyncClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-dax/runtimeConfig.browser.ts b/clients/client-dax/runtimeConfig.browser.ts
index acb5562c9799..088d5fcc55e5 100644
--- a/clients/client-dax/runtimeConfig.browser.ts
+++ b/clients/client-dax/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DAXClientConfig) => {
+export const getRuntimeConfig = (config: DAXClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-dax/runtimeConfig.native.ts b/clients/client-dax/runtimeConfig.native.ts
index 2fab51797620..4ee2c45aa8d4 100644
--- a/clients/client-dax/runtimeConfig.native.ts
+++ b/clients/client-dax/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DAXClientConfig) => {
+export const getRuntimeConfig = (config: DAXClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-dax/runtimeConfig.shared.ts b/clients/client-dax/runtimeConfig.shared.ts
index ecf9d8c628e5..c3d5e10eb37d 100644
--- a/clients/client-dax/runtimeConfig.shared.ts
+++ b/clients/client-dax/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { DAXClientConfig } from "./DAXClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DAXClientConfig) => ({
+export const getRuntimeConfig = (config: DAXClientConfig = {}) => ({
   apiVersion: "2017-04-19",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-dax/runtimeConfig.ts b/clients/client-dax/runtimeConfig.ts
index 7391bd05627c..11eda1ad670d 100644
--- a/clients/client-dax/runtimeConfig.ts
+++ b/clients/client-dax/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DAXClientConfig) => {
+export const getRuntimeConfig = (config: DAXClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-detective/runtimeConfig.browser.ts b/clients/client-detective/runtimeConfig.browser.ts
index 88afaefd15e9..094411fb4f6d 100644
--- a/clients/client-detective/runtimeConfig.browser.ts
+++ b/clients/client-detective/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DetectiveClientConfig) => {
+export const getRuntimeConfig = (config: DetectiveClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-detective/runtimeConfig.native.ts b/clients/client-detective/runtimeConfig.native.ts
index b673d584dc10..7e525610f817 100644
--- a/clients/client-detective/runtimeConfig.native.ts
+++ b/clients/client-detective/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DetectiveClientConfig) => {
+export const getRuntimeConfig = (config: DetectiveClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-detective/runtimeConfig.shared.ts b/clients/client-detective/runtimeConfig.shared.ts
index cbd3aecdff96..82f83a48a6ff 100644
--- a/clients/client-detective/runtimeConfig.shared.ts
+++ b/clients/client-detective/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { DetectiveClientConfig } from "./DetectiveClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DetectiveClientConfig) => ({
+export const getRuntimeConfig = (config: DetectiveClientConfig = {}) => ({
   apiVersion: "2018-10-26",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-detective/runtimeConfig.ts b/clients/client-detective/runtimeConfig.ts
index ac29b71ee898..9a41ee1617e4 100644
--- a/clients/client-detective/runtimeConfig.ts
+++ b/clients/client-detective/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DetectiveClientConfig) => {
+export const getRuntimeConfig = (config: DetectiveClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-device-farm/runtimeConfig.browser.ts b/clients/client-device-farm/runtimeConfig.browser.ts
index a8b36d24c814..3120a205e93c 100644
--- a/clients/client-device-farm/runtimeConfig.browser.ts
+++ b/clients/client-device-farm/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DeviceFarmClientConfig) => {
+export const getRuntimeConfig = (config: DeviceFarmClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-device-farm/runtimeConfig.native.ts b/clients/client-device-farm/runtimeConfig.native.ts
index ff60387eea19..ac8135760461 100644
--- a/clients/client-device-farm/runtimeConfig.native.ts
+++ b/clients/client-device-farm/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DeviceFarmClientConfig) => {
+export const getRuntimeConfig = (config: DeviceFarmClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-device-farm/runtimeConfig.shared.ts b/clients/client-device-farm/runtimeConfig.shared.ts
index cf3d897679ce..47ae7dc62d9a 100644
--- a/clients/client-device-farm/runtimeConfig.shared.ts
+++ b/clients/client-device-farm/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { DeviceFarmClientConfig } from "./DeviceFarmClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DeviceFarmClientConfig) => ({
+export const getRuntimeConfig = (config: DeviceFarmClientConfig = {}) => ({
   apiVersion: "2015-06-23",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-device-farm/runtimeConfig.ts b/clients/client-device-farm/runtimeConfig.ts
index 5ef0459d5488..90d5417c5e1e 100644
--- a/clients/client-device-farm/runtimeConfig.ts
+++ b/clients/client-device-farm/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DeviceFarmClientConfig) => {
+export const getRuntimeConfig = (config: DeviceFarmClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-devops-guru/runtimeConfig.browser.ts b/clients/client-devops-guru/runtimeConfig.browser.ts
index 9c462d8c9c3a..a63381c5b567 100644
--- a/clients/client-devops-guru/runtimeConfig.browser.ts
+++ b/clients/client-devops-guru/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DevOpsGuruClientConfig) => {
+export const getRuntimeConfig = (config: DevOpsGuruClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-devops-guru/runtimeConfig.native.ts b/clients/client-devops-guru/runtimeConfig.native.ts
index f30ad35da2fb..d6d42712c454 100644
--- a/clients/client-devops-guru/runtimeConfig.native.ts
+++ b/clients/client-devops-guru/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DevOpsGuruClientConfig) => {
+export const getRuntimeConfig = (config: DevOpsGuruClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-devops-guru/runtimeConfig.shared.ts b/clients/client-devops-guru/runtimeConfig.shared.ts
index 1e2648d1d593..faf19e909166 100644
--- a/clients/client-devops-guru/runtimeConfig.shared.ts
+++ b/clients/client-devops-guru/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { DevOpsGuruClientConfig } from "./DevOpsGuruClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DevOpsGuruClientConfig) => ({
+export const getRuntimeConfig = (config: DevOpsGuruClientConfig = {}) => ({
   apiVersion: "2020-12-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-devops-guru/runtimeConfig.ts b/clients/client-devops-guru/runtimeConfig.ts
index 76abd09014fa..bdd8e68e46bd 100644
--- a/clients/client-devops-guru/runtimeConfig.ts
+++ b/clients/client-devops-guru/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DevOpsGuruClientConfig) => {
+export const getRuntimeConfig = (config: DevOpsGuruClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-direct-connect/runtimeConfig.browser.ts b/clients/client-direct-connect/runtimeConfig.browser.ts
index 21d3ecbfd0d0..ff32b24441c1 100644
--- a/clients/client-direct-connect/runtimeConfig.browser.ts
+++ b/clients/client-direct-connect/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DirectConnectClientConfig) => {
+export const getRuntimeConfig = (config: DirectConnectClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-direct-connect/runtimeConfig.native.ts b/clients/client-direct-connect/runtimeConfig.native.ts
index 89b80b302aa8..8735ee6bcc37 100644
--- a/clients/client-direct-connect/runtimeConfig.native.ts
+++ b/clients/client-direct-connect/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DirectConnectClientConfig) => {
+export const getRuntimeConfig = (config: DirectConnectClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-direct-connect/runtimeConfig.shared.ts b/clients/client-direct-connect/runtimeConfig.shared.ts
index b80eb3005bef..b316d68ff42d 100644
--- a/clients/client-direct-connect/runtimeConfig.shared.ts
+++ b/clients/client-direct-connect/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { DirectConnectClientConfig } from "./DirectConnectClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DirectConnectClientConfig) => ({
+export const getRuntimeConfig = (config: DirectConnectClientConfig = {}) => ({
   apiVersion: "2012-10-25",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-direct-connect/runtimeConfig.ts b/clients/client-direct-connect/runtimeConfig.ts
index d35dea98eb00..61370ac3b9f8 100644
--- a/clients/client-direct-connect/runtimeConfig.ts
+++ b/clients/client-direct-connect/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DirectConnectClientConfig) => {
+export const getRuntimeConfig = (config: DirectConnectClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-directory-service/runtimeConfig.browser.ts b/clients/client-directory-service/runtimeConfig.browser.ts
index 1be3963c1b71..2efd78e83f5d 100644
--- a/clients/client-directory-service/runtimeConfig.browser.ts
+++ b/clients/client-directory-service/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DirectoryServiceClientConfig) => {
+export const getRuntimeConfig = (config: DirectoryServiceClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-directory-service/runtimeConfig.native.ts b/clients/client-directory-service/runtimeConfig.native.ts
index 82b5727a09cf..b5e4a83a0cfc 100644
--- a/clients/client-directory-service/runtimeConfig.native.ts
+++ b/clients/client-directory-service/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DirectoryServiceClientConfig) => {
+export const getRuntimeConfig = (config: DirectoryServiceClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-directory-service/runtimeConfig.shared.ts b/clients/client-directory-service/runtimeConfig.shared.ts
index 2469ccba760d..40b282e5d140 100644
--- a/clients/client-directory-service/runtimeConfig.shared.ts
+++ b/clients/client-directory-service/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { DirectoryServiceClientConfig } from "./DirectoryServiceClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DirectoryServiceClientConfig) => ({
+export const getRuntimeConfig = (config: DirectoryServiceClientConfig = {}) => ({
   apiVersion: "2015-04-16",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-directory-service/runtimeConfig.ts b/clients/client-directory-service/runtimeConfig.ts
index cb2394a0a010..40cfa63ec0a6 100644
--- a/clients/client-directory-service/runtimeConfig.ts
+++ b/clients/client-directory-service/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DirectoryServiceClientConfig) => {
+export const getRuntimeConfig = (config: DirectoryServiceClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-dlm/runtimeConfig.browser.ts b/clients/client-dlm/runtimeConfig.browser.ts
index fd564bac50d5..19fdf8f3e0bb 100644
--- a/clients/client-dlm/runtimeConfig.browser.ts
+++ b/clients/client-dlm/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DLMClientConfig) => {
+export const getRuntimeConfig = (config: DLMClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-dlm/runtimeConfig.native.ts b/clients/client-dlm/runtimeConfig.native.ts
index e05ec2ab3fbb..d73528e40e2e 100644
--- a/clients/client-dlm/runtimeConfig.native.ts
+++ b/clients/client-dlm/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DLMClientConfig) => {
+export const getRuntimeConfig = (config: DLMClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-dlm/runtimeConfig.shared.ts b/clients/client-dlm/runtimeConfig.shared.ts
index 33c003f3a2aa..814e3ac677f6 100644
--- a/clients/client-dlm/runtimeConfig.shared.ts
+++ b/clients/client-dlm/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { DLMClientConfig } from "./DLMClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DLMClientConfig) => ({
+export const getRuntimeConfig = (config: DLMClientConfig = {}) => ({
   apiVersion: "2018-01-12",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-dlm/runtimeConfig.ts b/clients/client-dlm/runtimeConfig.ts
index 73dc87352b45..3f625261ec48 100644
--- a/clients/client-dlm/runtimeConfig.ts
+++ b/clients/client-dlm/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DLMClientConfig) => {
+export const getRuntimeConfig = (config: DLMClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-docdb/runtimeConfig.browser.ts b/clients/client-docdb/runtimeConfig.browser.ts
index 53b0b93f1cb4..c722b27dcde1 100644
--- a/clients/client-docdb/runtimeConfig.browser.ts
+++ b/clients/client-docdb/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DocDBClientConfig) => {
+export const getRuntimeConfig = (config: DocDBClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-docdb/runtimeConfig.native.ts b/clients/client-docdb/runtimeConfig.native.ts
index 06a6bd4b70bf..d495bb01ef18 100644
--- a/clients/client-docdb/runtimeConfig.native.ts
+++ b/clients/client-docdb/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DocDBClientConfig) => {
+export const getRuntimeConfig = (config: DocDBClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-docdb/runtimeConfig.shared.ts b/clients/client-docdb/runtimeConfig.shared.ts
index a8c2ae41a4b1..990af19422d3 100644
--- a/clients/client-docdb/runtimeConfig.shared.ts
+++ b/clients/client-docdb/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { DocDBClientConfig } from "./DocDBClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DocDBClientConfig) => ({
+export const getRuntimeConfig = (config: DocDBClientConfig = {}) => ({
   apiVersion: "2014-10-31",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-docdb/runtimeConfig.ts b/clients/client-docdb/runtimeConfig.ts
index 6f267f154691..169097814553 100644
--- a/clients/client-docdb/runtimeConfig.ts
+++ b/clients/client-docdb/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DocDBClientConfig) => {
+export const getRuntimeConfig = (config: DocDBClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-dynamodb-streams/runtimeConfig.browser.ts b/clients/client-dynamodb-streams/runtimeConfig.browser.ts
index 9d70d929e7f6..5ee70b843168 100644
--- a/clients/client-dynamodb-streams/runtimeConfig.browser.ts
+++ b/clients/client-dynamodb-streams/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DynamoDBStreamsClientConfig) => {
+export const getRuntimeConfig = (config: DynamoDBStreamsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-dynamodb-streams/runtimeConfig.native.ts b/clients/client-dynamodb-streams/runtimeConfig.native.ts
index 60b6a01407d8..027b401334d5 100644
--- a/clients/client-dynamodb-streams/runtimeConfig.native.ts
+++ b/clients/client-dynamodb-streams/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DynamoDBStreamsClientConfig) => {
+export const getRuntimeConfig = (config: DynamoDBStreamsClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-dynamodb-streams/runtimeConfig.shared.ts b/clients/client-dynamodb-streams/runtimeConfig.shared.ts
index dee631eccef1..b8171d19f4c4 100644
--- a/clients/client-dynamodb-streams/runtimeConfig.shared.ts
+++ b/clients/client-dynamodb-streams/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { DynamoDBStreamsClientConfig } from "./DynamoDBStreamsClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DynamoDBStreamsClientConfig) => ({
+export const getRuntimeConfig = (config: DynamoDBStreamsClientConfig = {}) => ({
   apiVersion: "2012-08-10",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-dynamodb-streams/runtimeConfig.ts b/clients/client-dynamodb-streams/runtimeConfig.ts
index 1aa8d5779ac4..cf14df2c9616 100644
--- a/clients/client-dynamodb-streams/runtimeConfig.ts
+++ b/clients/client-dynamodb-streams/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DynamoDBStreamsClientConfig) => {
+export const getRuntimeConfig = (config: DynamoDBStreamsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-dynamodb/runtimeConfig.browser.ts b/clients/client-dynamodb/runtimeConfig.browser.ts
index e0e418fd5927..bf5b22cea132 100644
--- a/clients/client-dynamodb/runtimeConfig.browser.ts
+++ b/clients/client-dynamodb/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DynamoDBClientConfig) => {
+export const getRuntimeConfig = (config: DynamoDBClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-dynamodb/runtimeConfig.native.ts b/clients/client-dynamodb/runtimeConfig.native.ts
index bb6dc79133d2..5961f8d5a077 100644
--- a/clients/client-dynamodb/runtimeConfig.native.ts
+++ b/clients/client-dynamodb/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DynamoDBClientConfig) => {
+export const getRuntimeConfig = (config: DynamoDBClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-dynamodb/runtimeConfig.shared.ts b/clients/client-dynamodb/runtimeConfig.shared.ts
index aab6347f744b..fd69457ccaed 100644
--- a/clients/client-dynamodb/runtimeConfig.shared.ts
+++ b/clients/client-dynamodb/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { DynamoDBClientConfig } from "./DynamoDBClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DynamoDBClientConfig) => ({
+export const getRuntimeConfig = (config: DynamoDBClientConfig = {}) => ({
   apiVersion: "2012-08-10",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-dynamodb/runtimeConfig.ts b/clients/client-dynamodb/runtimeConfig.ts
index 30105babed08..7d01b3becbfb 100644
--- a/clients/client-dynamodb/runtimeConfig.ts
+++ b/clients/client-dynamodb/runtimeConfig.ts
@@ -18,7 +18,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: DynamoDBClientConfig) => {
+export const getRuntimeConfig = (config: DynamoDBClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-ebs/runtimeConfig.browser.ts b/clients/client-ebs/runtimeConfig.browser.ts
index c17a53826af1..6c87c4ae4d7e 100644
--- a/clients/client-ebs/runtimeConfig.browser.ts
+++ b/clients/client-ebs/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EBSClientConfig) => {
+export const getRuntimeConfig = (config: EBSClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-ebs/runtimeConfig.native.ts b/clients/client-ebs/runtimeConfig.native.ts
index a11a5399993d..258cae5d7b97 100644
--- a/clients/client-ebs/runtimeConfig.native.ts
+++ b/clients/client-ebs/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EBSClientConfig) => {
+export const getRuntimeConfig = (config: EBSClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-ebs/runtimeConfig.shared.ts b/clients/client-ebs/runtimeConfig.shared.ts
index 55b67ca11295..8b8961376bbf 100644
--- a/clients/client-ebs/runtimeConfig.shared.ts
+++ b/clients/client-ebs/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { EBSClientConfig } from "./EBSClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EBSClientConfig) => ({
+export const getRuntimeConfig = (config: EBSClientConfig = {}) => ({
   apiVersion: "2019-11-02",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-ebs/runtimeConfig.ts b/clients/client-ebs/runtimeConfig.ts
index e6b8c2c62b6c..9664d32403df 100644
--- a/clients/client-ebs/runtimeConfig.ts
+++ b/clients/client-ebs/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EBSClientConfig) => {
+export const getRuntimeConfig = (config: EBSClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-ec2-instance-connect/runtimeConfig.browser.ts b/clients/client-ec2-instance-connect/runtimeConfig.browser.ts
index ab6bf404b55e..2cd6326225c5 100644
--- a/clients/client-ec2-instance-connect/runtimeConfig.browser.ts
+++ b/clients/client-ec2-instance-connect/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EC2InstanceConnectClientConfig) => {
+export const getRuntimeConfig = (config: EC2InstanceConnectClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-ec2-instance-connect/runtimeConfig.native.ts b/clients/client-ec2-instance-connect/runtimeConfig.native.ts
index c6a7f283ad01..bba3893861e4 100644
--- a/clients/client-ec2-instance-connect/runtimeConfig.native.ts
+++ b/clients/client-ec2-instance-connect/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EC2InstanceConnectClientConfig) => {
+export const getRuntimeConfig = (config: EC2InstanceConnectClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-ec2-instance-connect/runtimeConfig.shared.ts b/clients/client-ec2-instance-connect/runtimeConfig.shared.ts
index 130909cc5837..468ad887c53d 100644
--- a/clients/client-ec2-instance-connect/runtimeConfig.shared.ts
+++ b/clients/client-ec2-instance-connect/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { EC2InstanceConnectClientConfig } from "./EC2InstanceConnectClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EC2InstanceConnectClientConfig) => ({
+export const getRuntimeConfig = (config: EC2InstanceConnectClientConfig = {}) => ({
   apiVersion: "2018-04-02",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-ec2-instance-connect/runtimeConfig.ts b/clients/client-ec2-instance-connect/runtimeConfig.ts
index 30c695789e26..7607e5c0c714 100644
--- a/clients/client-ec2-instance-connect/runtimeConfig.ts
+++ b/clients/client-ec2-instance-connect/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EC2InstanceConnectClientConfig) => {
+export const getRuntimeConfig = (config: EC2InstanceConnectClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-ec2/runtimeConfig.browser.ts b/clients/client-ec2/runtimeConfig.browser.ts
index 5d90ad6764e2..896884916c2f 100644
--- a/clients/client-ec2/runtimeConfig.browser.ts
+++ b/clients/client-ec2/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EC2ClientConfig) => {
+export const getRuntimeConfig = (config: EC2ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-ec2/runtimeConfig.native.ts b/clients/client-ec2/runtimeConfig.native.ts
index feacabcce215..9da827822c5e 100644
--- a/clients/client-ec2/runtimeConfig.native.ts
+++ b/clients/client-ec2/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EC2ClientConfig) => {
+export const getRuntimeConfig = (config: EC2ClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-ec2/runtimeConfig.shared.ts b/clients/client-ec2/runtimeConfig.shared.ts
index 6caa26acd132..d3c87419ea11 100644
--- a/clients/client-ec2/runtimeConfig.shared.ts
+++ b/clients/client-ec2/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { EC2ClientConfig } from "./EC2Client";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EC2ClientConfig) => ({
+export const getRuntimeConfig = (config: EC2ClientConfig = {}) => ({
   apiVersion: "2016-11-15",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-ec2/runtimeConfig.ts b/clients/client-ec2/runtimeConfig.ts
index 12f3ced93eb6..a6752ad51171 100644
--- a/clients/client-ec2/runtimeConfig.ts
+++ b/clients/client-ec2/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EC2ClientConfig) => {
+export const getRuntimeConfig = (config: EC2ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-ecr-public/runtimeConfig.browser.ts b/clients/client-ecr-public/runtimeConfig.browser.ts
index 76c95a942ddb..4999a4ae53da 100644
--- a/clients/client-ecr-public/runtimeConfig.browser.ts
+++ b/clients/client-ecr-public/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ECRPUBLICClientConfig) => {
+export const getRuntimeConfig = (config: ECRPUBLICClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-ecr-public/runtimeConfig.native.ts b/clients/client-ecr-public/runtimeConfig.native.ts
index 6c9436148db6..69759c724170 100644
--- a/clients/client-ecr-public/runtimeConfig.native.ts
+++ b/clients/client-ecr-public/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ECRPUBLICClientConfig) => {
+export const getRuntimeConfig = (config: ECRPUBLICClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-ecr-public/runtimeConfig.shared.ts b/clients/client-ecr-public/runtimeConfig.shared.ts
index b5f610186b74..328d21078de3 100644
--- a/clients/client-ecr-public/runtimeConfig.shared.ts
+++ b/clients/client-ecr-public/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ECRPUBLICClientConfig } from "./ECRPUBLICClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ECRPUBLICClientConfig) => ({
+export const getRuntimeConfig = (config: ECRPUBLICClientConfig = {}) => ({
   apiVersion: "2020-10-30",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-ecr-public/runtimeConfig.ts b/clients/client-ecr-public/runtimeConfig.ts
index 3c569161eecf..6075bf4adb7a 100644
--- a/clients/client-ecr-public/runtimeConfig.ts
+++ b/clients/client-ecr-public/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ECRPUBLICClientConfig) => {
+export const getRuntimeConfig = (config: ECRPUBLICClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-ecr/runtimeConfig.browser.ts b/clients/client-ecr/runtimeConfig.browser.ts
index 367c9899dbd1..8e7fcae13384 100644
--- a/clients/client-ecr/runtimeConfig.browser.ts
+++ b/clients/client-ecr/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ECRClientConfig) => {
+export const getRuntimeConfig = (config: ECRClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-ecr/runtimeConfig.native.ts b/clients/client-ecr/runtimeConfig.native.ts
index 42329907d8eb..a384720d3096 100644
--- a/clients/client-ecr/runtimeConfig.native.ts
+++ b/clients/client-ecr/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ECRClientConfig) => {
+export const getRuntimeConfig = (config: ECRClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-ecr/runtimeConfig.shared.ts b/clients/client-ecr/runtimeConfig.shared.ts
index 144f0c864b48..55f0ec97671d 100644
--- a/clients/client-ecr/runtimeConfig.shared.ts
+++ b/clients/client-ecr/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ECRClientConfig } from "./ECRClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ECRClientConfig) => ({
+export const getRuntimeConfig = (config: ECRClientConfig = {}) => ({
   apiVersion: "2015-09-21",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-ecr/runtimeConfig.ts b/clients/client-ecr/runtimeConfig.ts
index 8257a1fdc0fb..7eebce325f7a 100644
--- a/clients/client-ecr/runtimeConfig.ts
+++ b/clients/client-ecr/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ECRClientConfig) => {
+export const getRuntimeConfig = (config: ECRClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-ecs/runtimeConfig.browser.ts b/clients/client-ecs/runtimeConfig.browser.ts
index f89c4fbb3994..e27dc32a6f64 100644
--- a/clients/client-ecs/runtimeConfig.browser.ts
+++ b/clients/client-ecs/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ECSClientConfig) => {
+export const getRuntimeConfig = (config: ECSClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-ecs/runtimeConfig.native.ts b/clients/client-ecs/runtimeConfig.native.ts
index 547c6261c951..c65c05e02510 100644
--- a/clients/client-ecs/runtimeConfig.native.ts
+++ b/clients/client-ecs/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ECSClientConfig) => {
+export const getRuntimeConfig = (config: ECSClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-ecs/runtimeConfig.shared.ts b/clients/client-ecs/runtimeConfig.shared.ts
index 3ac2f4389a53..47bc5262540c 100644
--- a/clients/client-ecs/runtimeConfig.shared.ts
+++ b/clients/client-ecs/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ECSClientConfig } from "./ECSClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ECSClientConfig) => ({
+export const getRuntimeConfig = (config: ECSClientConfig = {}) => ({
   apiVersion: "2014-11-13",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-ecs/runtimeConfig.ts b/clients/client-ecs/runtimeConfig.ts
index 27e058a49d91..4e677933e74d 100644
--- a/clients/client-ecs/runtimeConfig.ts
+++ b/clients/client-ecs/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ECSClientConfig) => {
+export const getRuntimeConfig = (config: ECSClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-efs/runtimeConfig.browser.ts b/clients/client-efs/runtimeConfig.browser.ts
index 120bdcab46cd..0aafa436765b 100644
--- a/clients/client-efs/runtimeConfig.browser.ts
+++ b/clients/client-efs/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EFSClientConfig) => {
+export const getRuntimeConfig = (config: EFSClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-efs/runtimeConfig.native.ts b/clients/client-efs/runtimeConfig.native.ts
index df59b2a970c3..52b4c0a3504a 100644
--- a/clients/client-efs/runtimeConfig.native.ts
+++ b/clients/client-efs/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EFSClientConfig) => {
+export const getRuntimeConfig = (config: EFSClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-efs/runtimeConfig.shared.ts b/clients/client-efs/runtimeConfig.shared.ts
index d1e66f6d3774..7c3551e9b1a8 100644
--- a/clients/client-efs/runtimeConfig.shared.ts
+++ b/clients/client-efs/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { EFSClientConfig } from "./EFSClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EFSClientConfig) => ({
+export const getRuntimeConfig = (config: EFSClientConfig = {}) => ({
   apiVersion: "2015-02-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-efs/runtimeConfig.ts b/clients/client-efs/runtimeConfig.ts
index cd9244181a34..9c0c0fedbd2a 100644
--- a/clients/client-efs/runtimeConfig.ts
+++ b/clients/client-efs/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EFSClientConfig) => {
+export const getRuntimeConfig = (config: EFSClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-eks/runtimeConfig.browser.ts b/clients/client-eks/runtimeConfig.browser.ts
index 96e9708943f4..a224f8e31d64 100644
--- a/clients/client-eks/runtimeConfig.browser.ts
+++ b/clients/client-eks/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EKSClientConfig) => {
+export const getRuntimeConfig = (config: EKSClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-eks/runtimeConfig.native.ts b/clients/client-eks/runtimeConfig.native.ts
index e789dd8b657a..2bf6e8056e1a 100644
--- a/clients/client-eks/runtimeConfig.native.ts
+++ b/clients/client-eks/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EKSClientConfig) => {
+export const getRuntimeConfig = (config: EKSClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-eks/runtimeConfig.shared.ts b/clients/client-eks/runtimeConfig.shared.ts
index a3bfa26157b5..eebb2ff1855a 100644
--- a/clients/client-eks/runtimeConfig.shared.ts
+++ b/clients/client-eks/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { EKSClientConfig } from "./EKSClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EKSClientConfig) => ({
+export const getRuntimeConfig = (config: EKSClientConfig = {}) => ({
   apiVersion: "2017-11-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-eks/runtimeConfig.ts b/clients/client-eks/runtimeConfig.ts
index 39acf72f8437..0913cdf53738 100644
--- a/clients/client-eks/runtimeConfig.ts
+++ b/clients/client-eks/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EKSClientConfig) => {
+export const getRuntimeConfig = (config: EKSClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-elastic-beanstalk/runtimeConfig.browser.ts b/clients/client-elastic-beanstalk/runtimeConfig.browser.ts
index ad81a7df8538..bf908256d001 100644
--- a/clients/client-elastic-beanstalk/runtimeConfig.browser.ts
+++ b/clients/client-elastic-beanstalk/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ElasticBeanstalkClientConfig) => {
+export const getRuntimeConfig = (config: ElasticBeanstalkClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-elastic-beanstalk/runtimeConfig.native.ts b/clients/client-elastic-beanstalk/runtimeConfig.native.ts
index e9b55f275d8a..6ec9ca4b066f 100644
--- a/clients/client-elastic-beanstalk/runtimeConfig.native.ts
+++ b/clients/client-elastic-beanstalk/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ElasticBeanstalkClientConfig) => {
+export const getRuntimeConfig = (config: ElasticBeanstalkClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-elastic-beanstalk/runtimeConfig.shared.ts b/clients/client-elastic-beanstalk/runtimeConfig.shared.ts
index ef06e8a029b9..d49c06a96fd3 100644
--- a/clients/client-elastic-beanstalk/runtimeConfig.shared.ts
+++ b/clients/client-elastic-beanstalk/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ElasticBeanstalkClientConfig } from "./ElasticBeanstalkClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ElasticBeanstalkClientConfig) => ({
+export const getRuntimeConfig = (config: ElasticBeanstalkClientConfig = {}) => ({
   apiVersion: "2010-12-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-elastic-beanstalk/runtimeConfig.ts b/clients/client-elastic-beanstalk/runtimeConfig.ts
index 6d537b718e1a..188ce311a3ef 100644
--- a/clients/client-elastic-beanstalk/runtimeConfig.ts
+++ b/clients/client-elastic-beanstalk/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ElasticBeanstalkClientConfig) => {
+export const getRuntimeConfig = (config: ElasticBeanstalkClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-elastic-inference/runtimeConfig.browser.ts b/clients/client-elastic-inference/runtimeConfig.browser.ts
index a7886262c962..4b8ffc5b0900 100644
--- a/clients/client-elastic-inference/runtimeConfig.browser.ts
+++ b/clients/client-elastic-inference/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ElasticInferenceClientConfig) => {
+export const getRuntimeConfig = (config: ElasticInferenceClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-elastic-inference/runtimeConfig.native.ts b/clients/client-elastic-inference/runtimeConfig.native.ts
index 9eac357a0308..ac59db72ba86 100644
--- a/clients/client-elastic-inference/runtimeConfig.native.ts
+++ b/clients/client-elastic-inference/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ElasticInferenceClientConfig) => {
+export const getRuntimeConfig = (config: ElasticInferenceClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-elastic-inference/runtimeConfig.shared.ts b/clients/client-elastic-inference/runtimeConfig.shared.ts
index c7bc71743b1f..991a15beaa8d 100644
--- a/clients/client-elastic-inference/runtimeConfig.shared.ts
+++ b/clients/client-elastic-inference/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ElasticInferenceClientConfig } from "./ElasticInferenceClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ElasticInferenceClientConfig) => ({
+export const getRuntimeConfig = (config: ElasticInferenceClientConfig = {}) => ({
   apiVersion: "2017-07-25",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-elastic-inference/runtimeConfig.ts b/clients/client-elastic-inference/runtimeConfig.ts
index a18e13c482aa..afe352c52e93 100644
--- a/clients/client-elastic-inference/runtimeConfig.ts
+++ b/clients/client-elastic-inference/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ElasticInferenceClientConfig) => {
+export const getRuntimeConfig = (config: ElasticInferenceClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-elastic-load-balancing-v2/runtimeConfig.browser.ts b/clients/client-elastic-load-balancing-v2/runtimeConfig.browser.ts
index abc7141ed89e..e02230666e4e 100644
--- a/clients/client-elastic-load-balancing-v2/runtimeConfig.browser.ts
+++ b/clients/client-elastic-load-balancing-v2/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ElasticLoadBalancingV2ClientConfig) => {
+export const getRuntimeConfig = (config: ElasticLoadBalancingV2ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-elastic-load-balancing-v2/runtimeConfig.native.ts b/clients/client-elastic-load-balancing-v2/runtimeConfig.native.ts
index 93305ca1e2a6..e7a8f432e540 100644
--- a/clients/client-elastic-load-balancing-v2/runtimeConfig.native.ts
+++ b/clients/client-elastic-load-balancing-v2/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ElasticLoadBalancingV2ClientConfig) => {
+export const getRuntimeConfig = (config: ElasticLoadBalancingV2ClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-elastic-load-balancing-v2/runtimeConfig.shared.ts b/clients/client-elastic-load-balancing-v2/runtimeConfig.shared.ts
index 52cf89c11119..00ce3f43d7c1 100644
--- a/clients/client-elastic-load-balancing-v2/runtimeConfig.shared.ts
+++ b/clients/client-elastic-load-balancing-v2/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ElasticLoadBalancingV2ClientConfig } from "./ElasticLoadBalancingV2Clie
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ElasticLoadBalancingV2ClientConfig) => ({
+export const getRuntimeConfig = (config: ElasticLoadBalancingV2ClientConfig = {}) => ({
   apiVersion: "2015-12-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-elastic-load-balancing-v2/runtimeConfig.ts b/clients/client-elastic-load-balancing-v2/runtimeConfig.ts
index 92bd1e1e1133..8f28b9c457a6 100644
--- a/clients/client-elastic-load-balancing-v2/runtimeConfig.ts
+++ b/clients/client-elastic-load-balancing-v2/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ElasticLoadBalancingV2ClientConfig) => {
+export const getRuntimeConfig = (config: ElasticLoadBalancingV2ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-elastic-load-balancing/runtimeConfig.browser.ts b/clients/client-elastic-load-balancing/runtimeConfig.browser.ts
index 7c5854814a17..e10d370c5df1 100644
--- a/clients/client-elastic-load-balancing/runtimeConfig.browser.ts
+++ b/clients/client-elastic-load-balancing/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ElasticLoadBalancingClientConfig) => {
+export const getRuntimeConfig = (config: ElasticLoadBalancingClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-elastic-load-balancing/runtimeConfig.native.ts b/clients/client-elastic-load-balancing/runtimeConfig.native.ts
index 0f623d9c3adb..e97855bddd13 100644
--- a/clients/client-elastic-load-balancing/runtimeConfig.native.ts
+++ b/clients/client-elastic-load-balancing/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ElasticLoadBalancingClientConfig) => {
+export const getRuntimeConfig = (config: ElasticLoadBalancingClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-elastic-load-balancing/runtimeConfig.shared.ts b/clients/client-elastic-load-balancing/runtimeConfig.shared.ts
index c76e8fefc7e2..cb56d341584d 100644
--- a/clients/client-elastic-load-balancing/runtimeConfig.shared.ts
+++ b/clients/client-elastic-load-balancing/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ElasticLoadBalancingClientConfig } from "./ElasticLoadBalancingClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ElasticLoadBalancingClientConfig) => ({
+export const getRuntimeConfig = (config: ElasticLoadBalancingClientConfig = {}) => ({
   apiVersion: "2012-06-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-elastic-load-balancing/runtimeConfig.ts b/clients/client-elastic-load-balancing/runtimeConfig.ts
index 7427d893e096..18a7cc8abd51 100644
--- a/clients/client-elastic-load-balancing/runtimeConfig.ts
+++ b/clients/client-elastic-load-balancing/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ElasticLoadBalancingClientConfig) => {
+export const getRuntimeConfig = (config: ElasticLoadBalancingClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-elastic-transcoder/runtimeConfig.browser.ts b/clients/client-elastic-transcoder/runtimeConfig.browser.ts
index 479db6e5012b..f24c11688330 100644
--- a/clients/client-elastic-transcoder/runtimeConfig.browser.ts
+++ b/clients/client-elastic-transcoder/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ElasticTranscoderClientConfig) => {
+export const getRuntimeConfig = (config: ElasticTranscoderClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-elastic-transcoder/runtimeConfig.native.ts b/clients/client-elastic-transcoder/runtimeConfig.native.ts
index 57673e5ae316..e4ced3bd53ba 100644
--- a/clients/client-elastic-transcoder/runtimeConfig.native.ts
+++ b/clients/client-elastic-transcoder/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ElasticTranscoderClientConfig) => {
+export const getRuntimeConfig = (config: ElasticTranscoderClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-elastic-transcoder/runtimeConfig.shared.ts b/clients/client-elastic-transcoder/runtimeConfig.shared.ts
index 8b932fecaf18..8bc2b24de9cb 100644
--- a/clients/client-elastic-transcoder/runtimeConfig.shared.ts
+++ b/clients/client-elastic-transcoder/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ElasticTranscoderClientConfig } from "./ElasticTranscoderClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ElasticTranscoderClientConfig) => ({
+export const getRuntimeConfig = (config: ElasticTranscoderClientConfig = {}) => ({
   apiVersion: "2012-09-25",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-elastic-transcoder/runtimeConfig.ts b/clients/client-elastic-transcoder/runtimeConfig.ts
index 5d7251d3c1f1..582f957cddbe 100644
--- a/clients/client-elastic-transcoder/runtimeConfig.ts
+++ b/clients/client-elastic-transcoder/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ElasticTranscoderClientConfig) => {
+export const getRuntimeConfig = (config: ElasticTranscoderClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-elasticache/runtimeConfig.browser.ts b/clients/client-elasticache/runtimeConfig.browser.ts
index c12f7c303071..e6793028d0e9 100644
--- a/clients/client-elasticache/runtimeConfig.browser.ts
+++ b/clients/client-elasticache/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ElastiCacheClientConfig) => {
+export const getRuntimeConfig = (config: ElastiCacheClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-elasticache/runtimeConfig.native.ts b/clients/client-elasticache/runtimeConfig.native.ts
index ed7edb87ba42..ca128398a208 100644
--- a/clients/client-elasticache/runtimeConfig.native.ts
+++ b/clients/client-elasticache/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ElastiCacheClientConfig) => {
+export const getRuntimeConfig = (config: ElastiCacheClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-elasticache/runtimeConfig.shared.ts b/clients/client-elasticache/runtimeConfig.shared.ts
index 861fb559db63..d0cffd554ae6 100644
--- a/clients/client-elasticache/runtimeConfig.shared.ts
+++ b/clients/client-elasticache/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ElastiCacheClientConfig } from "./ElastiCacheClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ElastiCacheClientConfig) => ({
+export const getRuntimeConfig = (config: ElastiCacheClientConfig = {}) => ({
   apiVersion: "2015-02-02",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-elasticache/runtimeConfig.ts b/clients/client-elasticache/runtimeConfig.ts
index 6b136b30a283..d506fcc2efd0 100644
--- a/clients/client-elasticache/runtimeConfig.ts
+++ b/clients/client-elasticache/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ElastiCacheClientConfig) => {
+export const getRuntimeConfig = (config: ElastiCacheClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-elasticsearch-service/runtimeConfig.browser.ts b/clients/client-elasticsearch-service/runtimeConfig.browser.ts
index 41c49a671fd0..73dbcb18d18e 100644
--- a/clients/client-elasticsearch-service/runtimeConfig.browser.ts
+++ b/clients/client-elasticsearch-service/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ElasticsearchServiceClientConfig) => {
+export const getRuntimeConfig = (config: ElasticsearchServiceClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-elasticsearch-service/runtimeConfig.native.ts b/clients/client-elasticsearch-service/runtimeConfig.native.ts
index 25a3db513415..59c27d2395b1 100644
--- a/clients/client-elasticsearch-service/runtimeConfig.native.ts
+++ b/clients/client-elasticsearch-service/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ElasticsearchServiceClientConfig) => {
+export const getRuntimeConfig = (config: ElasticsearchServiceClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-elasticsearch-service/runtimeConfig.shared.ts b/clients/client-elasticsearch-service/runtimeConfig.shared.ts
index 2e8e06dbb675..e703fd3a1a54 100644
--- a/clients/client-elasticsearch-service/runtimeConfig.shared.ts
+++ b/clients/client-elasticsearch-service/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ElasticsearchServiceClientConfig } from "./ElasticsearchServiceClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ElasticsearchServiceClientConfig) => ({
+export const getRuntimeConfig = (config: ElasticsearchServiceClientConfig = {}) => ({
   apiVersion: "2015-01-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-elasticsearch-service/runtimeConfig.ts b/clients/client-elasticsearch-service/runtimeConfig.ts
index 3b429b8eb047..de30c5f2d7b8 100644
--- a/clients/client-elasticsearch-service/runtimeConfig.ts
+++ b/clients/client-elasticsearch-service/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ElasticsearchServiceClientConfig) => {
+export const getRuntimeConfig = (config: ElasticsearchServiceClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-emr-containers/runtimeConfig.browser.ts b/clients/client-emr-containers/runtimeConfig.browser.ts
index 6b42cdb68043..46982054d606 100644
--- a/clients/client-emr-containers/runtimeConfig.browser.ts
+++ b/clients/client-emr-containers/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EMRContainersClientConfig) => {
+export const getRuntimeConfig = (config: EMRContainersClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-emr-containers/runtimeConfig.native.ts b/clients/client-emr-containers/runtimeConfig.native.ts
index f722d3834dbd..c261cf501de0 100644
--- a/clients/client-emr-containers/runtimeConfig.native.ts
+++ b/clients/client-emr-containers/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EMRContainersClientConfig) => {
+export const getRuntimeConfig = (config: EMRContainersClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-emr-containers/runtimeConfig.shared.ts b/clients/client-emr-containers/runtimeConfig.shared.ts
index 6660f5cfbe75..ecfda64217e3 100644
--- a/clients/client-emr-containers/runtimeConfig.shared.ts
+++ b/clients/client-emr-containers/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { EMRContainersClientConfig } from "./EMRContainersClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EMRContainersClientConfig) => ({
+export const getRuntimeConfig = (config: EMRContainersClientConfig = {}) => ({
   apiVersion: "2020-10-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-emr-containers/runtimeConfig.ts b/clients/client-emr-containers/runtimeConfig.ts
index d91f8145dbde..4f2fd6db838d 100644
--- a/clients/client-emr-containers/runtimeConfig.ts
+++ b/clients/client-emr-containers/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EMRContainersClientConfig) => {
+export const getRuntimeConfig = (config: EMRContainersClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-emr/runtimeConfig.browser.ts b/clients/client-emr/runtimeConfig.browser.ts
index 1d4a33f508ad..7ec0716a0619 100644
--- a/clients/client-emr/runtimeConfig.browser.ts
+++ b/clients/client-emr/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EMRClientConfig) => {
+export const getRuntimeConfig = (config: EMRClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-emr/runtimeConfig.native.ts b/clients/client-emr/runtimeConfig.native.ts
index cd70b44ad7a9..4e5534609b80 100644
--- a/clients/client-emr/runtimeConfig.native.ts
+++ b/clients/client-emr/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EMRClientConfig) => {
+export const getRuntimeConfig = (config: EMRClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-emr/runtimeConfig.shared.ts b/clients/client-emr/runtimeConfig.shared.ts
index 7eb98c1bfe76..91154cda7647 100644
--- a/clients/client-emr/runtimeConfig.shared.ts
+++ b/clients/client-emr/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { EMRClientConfig } from "./EMRClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EMRClientConfig) => ({
+export const getRuntimeConfig = (config: EMRClientConfig = {}) => ({
   apiVersion: "2009-03-31",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-emr/runtimeConfig.ts b/clients/client-emr/runtimeConfig.ts
index de85bc0a11c6..e11bbbfd4628 100644
--- a/clients/client-emr/runtimeConfig.ts
+++ b/clients/client-emr/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EMRClientConfig) => {
+export const getRuntimeConfig = (config: EMRClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-eventbridge/runtimeConfig.browser.ts b/clients/client-eventbridge/runtimeConfig.browser.ts
index f4544f513fbb..e3d3d8f91ea7 100644
--- a/clients/client-eventbridge/runtimeConfig.browser.ts
+++ b/clients/client-eventbridge/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EventBridgeClientConfig) => {
+export const getRuntimeConfig = (config: EventBridgeClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-eventbridge/runtimeConfig.native.ts b/clients/client-eventbridge/runtimeConfig.native.ts
index 112e116cd128..21763f593b3a 100644
--- a/clients/client-eventbridge/runtimeConfig.native.ts
+++ b/clients/client-eventbridge/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EventBridgeClientConfig) => {
+export const getRuntimeConfig = (config: EventBridgeClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-eventbridge/runtimeConfig.shared.ts b/clients/client-eventbridge/runtimeConfig.shared.ts
index 95c827eb66e1..51a86e26d132 100644
--- a/clients/client-eventbridge/runtimeConfig.shared.ts
+++ b/clients/client-eventbridge/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { EventBridgeClientConfig } from "./EventBridgeClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EventBridgeClientConfig) => ({
+export const getRuntimeConfig = (config: EventBridgeClientConfig = {}) => ({
   apiVersion: "2015-10-07",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-eventbridge/runtimeConfig.ts b/clients/client-eventbridge/runtimeConfig.ts
index 5477978a91fc..14b510e922f9 100644
--- a/clients/client-eventbridge/runtimeConfig.ts
+++ b/clients/client-eventbridge/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EventBridgeClientConfig) => {
+export const getRuntimeConfig = (config: EventBridgeClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-finspace-data/runtimeConfig.browser.ts b/clients/client-finspace-data/runtimeConfig.browser.ts
index eb3e9ff0476b..7a4470fb89a7 100644
--- a/clients/client-finspace-data/runtimeConfig.browser.ts
+++ b/clients/client-finspace-data/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: FinspaceDataClientConfig) => {
+export const getRuntimeConfig = (config: FinspaceDataClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-finspace-data/runtimeConfig.native.ts b/clients/client-finspace-data/runtimeConfig.native.ts
index 37c48ac01218..3a7f5a303975 100644
--- a/clients/client-finspace-data/runtimeConfig.native.ts
+++ b/clients/client-finspace-data/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: FinspaceDataClientConfig) => {
+export const getRuntimeConfig = (config: FinspaceDataClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-finspace-data/runtimeConfig.shared.ts b/clients/client-finspace-data/runtimeConfig.shared.ts
index b4cd2f4e8684..230091fbd6a0 100644
--- a/clients/client-finspace-data/runtimeConfig.shared.ts
+++ b/clients/client-finspace-data/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { FinspaceDataClientConfig } from "./FinspaceDataClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: FinspaceDataClientConfig) => ({
+export const getRuntimeConfig = (config: FinspaceDataClientConfig = {}) => ({
   apiVersion: "2020-07-13",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-finspace-data/runtimeConfig.ts b/clients/client-finspace-data/runtimeConfig.ts
index ecaa3deea09f..276e7e60c956 100644
--- a/clients/client-finspace-data/runtimeConfig.ts
+++ b/clients/client-finspace-data/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: FinspaceDataClientConfig) => {
+export const getRuntimeConfig = (config: FinspaceDataClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-finspace/runtimeConfig.browser.ts b/clients/client-finspace/runtimeConfig.browser.ts
index dc8621120d4d..0caa14020f8e 100644
--- a/clients/client-finspace/runtimeConfig.browser.ts
+++ b/clients/client-finspace/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: FinspaceClientConfig) => {
+export const getRuntimeConfig = (config: FinspaceClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-finspace/runtimeConfig.native.ts b/clients/client-finspace/runtimeConfig.native.ts
index b2443e797ef8..5351ec4c0684 100644
--- a/clients/client-finspace/runtimeConfig.native.ts
+++ b/clients/client-finspace/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: FinspaceClientConfig) => {
+export const getRuntimeConfig = (config: FinspaceClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-finspace/runtimeConfig.shared.ts b/clients/client-finspace/runtimeConfig.shared.ts
index 4d2b7949be89..9e051486058f 100644
--- a/clients/client-finspace/runtimeConfig.shared.ts
+++ b/clients/client-finspace/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { FinspaceClientConfig } from "./FinspaceClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: FinspaceClientConfig) => ({
+export const getRuntimeConfig = (config: FinspaceClientConfig = {}) => ({
   apiVersion: "2021-03-12",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-finspace/runtimeConfig.ts b/clients/client-finspace/runtimeConfig.ts
index ef5795be4e94..79d156183795 100644
--- a/clients/client-finspace/runtimeConfig.ts
+++ b/clients/client-finspace/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: FinspaceClientConfig) => {
+export const getRuntimeConfig = (config: FinspaceClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-firehose/runtimeConfig.browser.ts b/clients/client-firehose/runtimeConfig.browser.ts
index 9b91dc7d0556..d76d38cf6acf 100644
--- a/clients/client-firehose/runtimeConfig.browser.ts
+++ b/clients/client-firehose/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: FirehoseClientConfig) => {
+export const getRuntimeConfig = (config: FirehoseClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-firehose/runtimeConfig.native.ts b/clients/client-firehose/runtimeConfig.native.ts
index 4d6d907ace03..415cf0240126 100644
--- a/clients/client-firehose/runtimeConfig.native.ts
+++ b/clients/client-firehose/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: FirehoseClientConfig) => {
+export const getRuntimeConfig = (config: FirehoseClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-firehose/runtimeConfig.shared.ts b/clients/client-firehose/runtimeConfig.shared.ts
index cd59da498c54..58e605af31a7 100644
--- a/clients/client-firehose/runtimeConfig.shared.ts
+++ b/clients/client-firehose/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { FirehoseClientConfig } from "./FirehoseClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: FirehoseClientConfig) => ({
+export const getRuntimeConfig = (config: FirehoseClientConfig = {}) => ({
   apiVersion: "2015-08-04",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-firehose/runtimeConfig.ts b/clients/client-firehose/runtimeConfig.ts
index 83ae32523eed..4b81b78bf12e 100644
--- a/clients/client-firehose/runtimeConfig.ts
+++ b/clients/client-firehose/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: FirehoseClientConfig) => {
+export const getRuntimeConfig = (config: FirehoseClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-fis/runtimeConfig.browser.ts b/clients/client-fis/runtimeConfig.browser.ts
index e0be5c0c99cf..584a95474bb4 100644
--- a/clients/client-fis/runtimeConfig.browser.ts
+++ b/clients/client-fis/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: FisClientConfig) => {
+export const getRuntimeConfig = (config: FisClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-fis/runtimeConfig.native.ts b/clients/client-fis/runtimeConfig.native.ts
index 4084d14f9da9..a6dae7fa5a9c 100644
--- a/clients/client-fis/runtimeConfig.native.ts
+++ b/clients/client-fis/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: FisClientConfig) => {
+export const getRuntimeConfig = (config: FisClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-fis/runtimeConfig.shared.ts b/clients/client-fis/runtimeConfig.shared.ts
index 817d2bc8927a..62e2e16decd5 100644
--- a/clients/client-fis/runtimeConfig.shared.ts
+++ b/clients/client-fis/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { FisClientConfig } from "./FisClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: FisClientConfig) => ({
+export const getRuntimeConfig = (config: FisClientConfig = {}) => ({
   apiVersion: "2020-12-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-fis/runtimeConfig.ts b/clients/client-fis/runtimeConfig.ts
index 53ec4324e219..65250a53a3f3 100644
--- a/clients/client-fis/runtimeConfig.ts
+++ b/clients/client-fis/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: FisClientConfig) => {
+export const getRuntimeConfig = (config: FisClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-fms/runtimeConfig.browser.ts b/clients/client-fms/runtimeConfig.browser.ts
index ff413fbcf487..483cbddd5795 100644
--- a/clients/client-fms/runtimeConfig.browser.ts
+++ b/clients/client-fms/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: FMSClientConfig) => {
+export const getRuntimeConfig = (config: FMSClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-fms/runtimeConfig.native.ts b/clients/client-fms/runtimeConfig.native.ts
index a7cef71e8566..d2e6d1d8dd25 100644
--- a/clients/client-fms/runtimeConfig.native.ts
+++ b/clients/client-fms/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: FMSClientConfig) => {
+export const getRuntimeConfig = (config: FMSClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-fms/runtimeConfig.shared.ts b/clients/client-fms/runtimeConfig.shared.ts
index d53ed016bbb3..a17361b0f841 100644
--- a/clients/client-fms/runtimeConfig.shared.ts
+++ b/clients/client-fms/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { FMSClientConfig } from "./FMSClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: FMSClientConfig) => ({
+export const getRuntimeConfig = (config: FMSClientConfig = {}) => ({
   apiVersion: "2018-01-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-fms/runtimeConfig.ts b/clients/client-fms/runtimeConfig.ts
index 6c83d16376c7..cedc5c499012 100644
--- a/clients/client-fms/runtimeConfig.ts
+++ b/clients/client-fms/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: FMSClientConfig) => {
+export const getRuntimeConfig = (config: FMSClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-forecast/runtimeConfig.browser.ts b/clients/client-forecast/runtimeConfig.browser.ts
index e2309e951f3c..4f09ce6ad2c1 100644
--- a/clients/client-forecast/runtimeConfig.browser.ts
+++ b/clients/client-forecast/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ForecastClientConfig) => {
+export const getRuntimeConfig = (config: ForecastClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-forecast/runtimeConfig.native.ts b/clients/client-forecast/runtimeConfig.native.ts
index 031a2f863fe1..30501260e79c 100644
--- a/clients/client-forecast/runtimeConfig.native.ts
+++ b/clients/client-forecast/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ForecastClientConfig) => {
+export const getRuntimeConfig = (config: ForecastClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-forecast/runtimeConfig.shared.ts b/clients/client-forecast/runtimeConfig.shared.ts
index 5cb077f9dc82..17ec25d3b92c 100644
--- a/clients/client-forecast/runtimeConfig.shared.ts
+++ b/clients/client-forecast/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ForecastClientConfig } from "./ForecastClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ForecastClientConfig) => ({
+export const getRuntimeConfig = (config: ForecastClientConfig = {}) => ({
   apiVersion: "2018-06-26",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-forecast/runtimeConfig.ts b/clients/client-forecast/runtimeConfig.ts
index 905bd9b9c386..81492dcd6b3c 100644
--- a/clients/client-forecast/runtimeConfig.ts
+++ b/clients/client-forecast/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ForecastClientConfig) => {
+export const getRuntimeConfig = (config: ForecastClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-forecastquery/runtimeConfig.browser.ts b/clients/client-forecastquery/runtimeConfig.browser.ts
index f0f0c9af3e51..3ef3afee16bf 100644
--- a/clients/client-forecastquery/runtimeConfig.browser.ts
+++ b/clients/client-forecastquery/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ForecastqueryClientConfig) => {
+export const getRuntimeConfig = (config: ForecastqueryClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-forecastquery/runtimeConfig.native.ts b/clients/client-forecastquery/runtimeConfig.native.ts
index 1ce473220198..24c3bbcc6d78 100644
--- a/clients/client-forecastquery/runtimeConfig.native.ts
+++ b/clients/client-forecastquery/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ForecastqueryClientConfig) => {
+export const getRuntimeConfig = (config: ForecastqueryClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-forecastquery/runtimeConfig.shared.ts b/clients/client-forecastquery/runtimeConfig.shared.ts
index 96de7f5a545e..cdfaf5e88c05 100644
--- a/clients/client-forecastquery/runtimeConfig.shared.ts
+++ b/clients/client-forecastquery/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ForecastqueryClientConfig } from "./ForecastqueryClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ForecastqueryClientConfig) => ({
+export const getRuntimeConfig = (config: ForecastqueryClientConfig = {}) => ({
   apiVersion: "2018-06-26",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-forecastquery/runtimeConfig.ts b/clients/client-forecastquery/runtimeConfig.ts
index fcfc78e50952..6372f86c3698 100644
--- a/clients/client-forecastquery/runtimeConfig.ts
+++ b/clients/client-forecastquery/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ForecastqueryClientConfig) => {
+export const getRuntimeConfig = (config: ForecastqueryClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-frauddetector/runtimeConfig.browser.ts b/clients/client-frauddetector/runtimeConfig.browser.ts
index 09b5b33ea76e..b483a485aaa1 100644
--- a/clients/client-frauddetector/runtimeConfig.browser.ts
+++ b/clients/client-frauddetector/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: FraudDetectorClientConfig) => {
+export const getRuntimeConfig = (config: FraudDetectorClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-frauddetector/runtimeConfig.native.ts b/clients/client-frauddetector/runtimeConfig.native.ts
index a678374e27d7..1e29e69f3189 100644
--- a/clients/client-frauddetector/runtimeConfig.native.ts
+++ b/clients/client-frauddetector/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: FraudDetectorClientConfig) => {
+export const getRuntimeConfig = (config: FraudDetectorClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-frauddetector/runtimeConfig.shared.ts b/clients/client-frauddetector/runtimeConfig.shared.ts
index dbab0f6547e6..84c50d5102af 100644
--- a/clients/client-frauddetector/runtimeConfig.shared.ts
+++ b/clients/client-frauddetector/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { FraudDetectorClientConfig } from "./FraudDetectorClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: FraudDetectorClientConfig) => ({
+export const getRuntimeConfig = (config: FraudDetectorClientConfig = {}) => ({
   apiVersion: "2019-11-15",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-frauddetector/runtimeConfig.ts b/clients/client-frauddetector/runtimeConfig.ts
index b20ce36cbb25..1e436388c314 100644
--- a/clients/client-frauddetector/runtimeConfig.ts
+++ b/clients/client-frauddetector/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: FraudDetectorClientConfig) => {
+export const getRuntimeConfig = (config: FraudDetectorClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-fsx/runtimeConfig.browser.ts b/clients/client-fsx/runtimeConfig.browser.ts
index 45988a794556..c7348dd5c407 100644
--- a/clients/client-fsx/runtimeConfig.browser.ts
+++ b/clients/client-fsx/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: FSxClientConfig) => {
+export const getRuntimeConfig = (config: FSxClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-fsx/runtimeConfig.native.ts b/clients/client-fsx/runtimeConfig.native.ts
index 243207f4fa82..e0b4c9719dd3 100644
--- a/clients/client-fsx/runtimeConfig.native.ts
+++ b/clients/client-fsx/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: FSxClientConfig) => {
+export const getRuntimeConfig = (config: FSxClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-fsx/runtimeConfig.shared.ts b/clients/client-fsx/runtimeConfig.shared.ts
index bd08ffa6d94c..fbf1370cbbf7 100644
--- a/clients/client-fsx/runtimeConfig.shared.ts
+++ b/clients/client-fsx/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { FSxClientConfig } from "./FSxClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: FSxClientConfig) => ({
+export const getRuntimeConfig = (config: FSxClientConfig = {}) => ({
   apiVersion: "2018-03-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-fsx/runtimeConfig.ts b/clients/client-fsx/runtimeConfig.ts
index 8c1e7ffc8b46..c95ea18134cd 100644
--- a/clients/client-fsx/runtimeConfig.ts
+++ b/clients/client-fsx/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: FSxClientConfig) => {
+export const getRuntimeConfig = (config: FSxClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-gamelift/runtimeConfig.browser.ts b/clients/client-gamelift/runtimeConfig.browser.ts
index b9daa48fcebb..b427f2f1754c 100644
--- a/clients/client-gamelift/runtimeConfig.browser.ts
+++ b/clients/client-gamelift/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GameLiftClientConfig) => {
+export const getRuntimeConfig = (config: GameLiftClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-gamelift/runtimeConfig.native.ts b/clients/client-gamelift/runtimeConfig.native.ts
index 6a584470804a..e6592eeff144 100644
--- a/clients/client-gamelift/runtimeConfig.native.ts
+++ b/clients/client-gamelift/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GameLiftClientConfig) => {
+export const getRuntimeConfig = (config: GameLiftClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-gamelift/runtimeConfig.shared.ts b/clients/client-gamelift/runtimeConfig.shared.ts
index 4ba8a3f3db1f..02d1ecc5a64c 100644
--- a/clients/client-gamelift/runtimeConfig.shared.ts
+++ b/clients/client-gamelift/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { GameLiftClientConfig } from "./GameLiftClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GameLiftClientConfig) => ({
+export const getRuntimeConfig = (config: GameLiftClientConfig = {}) => ({
   apiVersion: "2015-10-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-gamelift/runtimeConfig.ts b/clients/client-gamelift/runtimeConfig.ts
index aad3383ccf46..c219bb19a67b 100644
--- a/clients/client-gamelift/runtimeConfig.ts
+++ b/clients/client-gamelift/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GameLiftClientConfig) => {
+export const getRuntimeConfig = (config: GameLiftClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-glacier/runtimeConfig.browser.ts b/clients/client-glacier/runtimeConfig.browser.ts
index 18d0141b87be..994b2cc2a111 100644
--- a/clients/client-glacier/runtimeConfig.browser.ts
+++ b/clients/client-glacier/runtimeConfig.browser.ts
@@ -15,7 +15,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GlacierClientConfig) => {
+export const getRuntimeConfig = (config: GlacierClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-glacier/runtimeConfig.native.ts b/clients/client-glacier/runtimeConfig.native.ts
index 6b52dcc4ae66..1b447c66b8d7 100644
--- a/clients/client-glacier/runtimeConfig.native.ts
+++ b/clients/client-glacier/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GlacierClientConfig) => {
+export const getRuntimeConfig = (config: GlacierClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-glacier/runtimeConfig.shared.ts b/clients/client-glacier/runtimeConfig.shared.ts
index b8867e891b05..2655e7b58954 100644
--- a/clients/client-glacier/runtimeConfig.shared.ts
+++ b/clients/client-glacier/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { GlacierClientConfig } from "./GlacierClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GlacierClientConfig) => ({
+export const getRuntimeConfig = (config: GlacierClientConfig = {}) => ({
   apiVersion: "2012-06-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-glacier/runtimeConfig.ts b/clients/client-glacier/runtimeConfig.ts
index f428a6b50689..f8b8b2f4ab3f 100644
--- a/clients/client-glacier/runtimeConfig.ts
+++ b/clients/client-glacier/runtimeConfig.ts
@@ -18,7 +18,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GlacierClientConfig) => {
+export const getRuntimeConfig = (config: GlacierClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-global-accelerator/runtimeConfig.browser.ts b/clients/client-global-accelerator/runtimeConfig.browser.ts
index a070c1d15fb6..7a3653790445 100644
--- a/clients/client-global-accelerator/runtimeConfig.browser.ts
+++ b/clients/client-global-accelerator/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GlobalAcceleratorClientConfig) => {
+export const getRuntimeConfig = (config: GlobalAcceleratorClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-global-accelerator/runtimeConfig.native.ts b/clients/client-global-accelerator/runtimeConfig.native.ts
index 97bd4c0a5dbd..725ebb95a32e 100644
--- a/clients/client-global-accelerator/runtimeConfig.native.ts
+++ b/clients/client-global-accelerator/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GlobalAcceleratorClientConfig) => {
+export const getRuntimeConfig = (config: GlobalAcceleratorClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-global-accelerator/runtimeConfig.shared.ts b/clients/client-global-accelerator/runtimeConfig.shared.ts
index 59ddead7208a..a2adda5b81b0 100644
--- a/clients/client-global-accelerator/runtimeConfig.shared.ts
+++ b/clients/client-global-accelerator/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { GlobalAcceleratorClientConfig } from "./GlobalAcceleratorClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GlobalAcceleratorClientConfig) => ({
+export const getRuntimeConfig = (config: GlobalAcceleratorClientConfig = {}) => ({
   apiVersion: "2018-08-08",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-global-accelerator/runtimeConfig.ts b/clients/client-global-accelerator/runtimeConfig.ts
index 992a3f19b7e2..17824a45c5cc 100644
--- a/clients/client-global-accelerator/runtimeConfig.ts
+++ b/clients/client-global-accelerator/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GlobalAcceleratorClientConfig) => {
+export const getRuntimeConfig = (config: GlobalAcceleratorClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-glue/runtimeConfig.browser.ts b/clients/client-glue/runtimeConfig.browser.ts
index 7543e45c0536..efb453cc2b5a 100644
--- a/clients/client-glue/runtimeConfig.browser.ts
+++ b/clients/client-glue/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GlueClientConfig) => {
+export const getRuntimeConfig = (config: GlueClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-glue/runtimeConfig.native.ts b/clients/client-glue/runtimeConfig.native.ts
index 5f00c06f749f..a18b693fbf11 100644
--- a/clients/client-glue/runtimeConfig.native.ts
+++ b/clients/client-glue/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GlueClientConfig) => {
+export const getRuntimeConfig = (config: GlueClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-glue/runtimeConfig.shared.ts b/clients/client-glue/runtimeConfig.shared.ts
index 214a06eb76f9..617ba5b7f394 100644
--- a/clients/client-glue/runtimeConfig.shared.ts
+++ b/clients/client-glue/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { GlueClientConfig } from "./GlueClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GlueClientConfig) => ({
+export const getRuntimeConfig = (config: GlueClientConfig = {}) => ({
   apiVersion: "2017-03-31",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-glue/runtimeConfig.ts b/clients/client-glue/runtimeConfig.ts
index 96ba1076bf0f..f7fd40725650 100644
--- a/clients/client-glue/runtimeConfig.ts
+++ b/clients/client-glue/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GlueClientConfig) => {
+export const getRuntimeConfig = (config: GlueClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-greengrass/runtimeConfig.browser.ts b/clients/client-greengrass/runtimeConfig.browser.ts
index 5b00069633ad..da9f1a3db35c 100644
--- a/clients/client-greengrass/runtimeConfig.browser.ts
+++ b/clients/client-greengrass/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GreengrassClientConfig) => {
+export const getRuntimeConfig = (config: GreengrassClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-greengrass/runtimeConfig.native.ts b/clients/client-greengrass/runtimeConfig.native.ts
index 5bf1543181bf..643198e19c68 100644
--- a/clients/client-greengrass/runtimeConfig.native.ts
+++ b/clients/client-greengrass/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GreengrassClientConfig) => {
+export const getRuntimeConfig = (config: GreengrassClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-greengrass/runtimeConfig.shared.ts b/clients/client-greengrass/runtimeConfig.shared.ts
index b0b29241c21f..45bbf56a3c71 100644
--- a/clients/client-greengrass/runtimeConfig.shared.ts
+++ b/clients/client-greengrass/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { GreengrassClientConfig } from "./GreengrassClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GreengrassClientConfig) => ({
+export const getRuntimeConfig = (config: GreengrassClientConfig = {}) => ({
   apiVersion: "2017-06-07",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-greengrass/runtimeConfig.ts b/clients/client-greengrass/runtimeConfig.ts
index 2fd69badb638..193b18e129d4 100644
--- a/clients/client-greengrass/runtimeConfig.ts
+++ b/clients/client-greengrass/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GreengrassClientConfig) => {
+export const getRuntimeConfig = (config: GreengrassClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-greengrassv2/runtimeConfig.browser.ts b/clients/client-greengrassv2/runtimeConfig.browser.ts
index 9e74a92a67da..fc51035ea9b9 100644
--- a/clients/client-greengrassv2/runtimeConfig.browser.ts
+++ b/clients/client-greengrassv2/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GreengrassV2ClientConfig) => {
+export const getRuntimeConfig = (config: GreengrassV2ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-greengrassv2/runtimeConfig.native.ts b/clients/client-greengrassv2/runtimeConfig.native.ts
index f3c652fc01d8..c96addb1d593 100644
--- a/clients/client-greengrassv2/runtimeConfig.native.ts
+++ b/clients/client-greengrassv2/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GreengrassV2ClientConfig) => {
+export const getRuntimeConfig = (config: GreengrassV2ClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-greengrassv2/runtimeConfig.shared.ts b/clients/client-greengrassv2/runtimeConfig.shared.ts
index 0a68ff83b4ec..0d410a471059 100644
--- a/clients/client-greengrassv2/runtimeConfig.shared.ts
+++ b/clients/client-greengrassv2/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { GreengrassV2ClientConfig } from "./GreengrassV2Client";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GreengrassV2ClientConfig) => ({
+export const getRuntimeConfig = (config: GreengrassV2ClientConfig = {}) => ({
   apiVersion: "2020-11-30",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-greengrassv2/runtimeConfig.ts b/clients/client-greengrassv2/runtimeConfig.ts
index 901a768ba898..2cbfe82ad804 100644
--- a/clients/client-greengrassv2/runtimeConfig.ts
+++ b/clients/client-greengrassv2/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GreengrassV2ClientConfig) => {
+export const getRuntimeConfig = (config: GreengrassV2ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-groundstation/runtimeConfig.browser.ts b/clients/client-groundstation/runtimeConfig.browser.ts
index fe7b375ac437..4721f52cc6ec 100644
--- a/clients/client-groundstation/runtimeConfig.browser.ts
+++ b/clients/client-groundstation/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GroundStationClientConfig) => {
+export const getRuntimeConfig = (config: GroundStationClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-groundstation/runtimeConfig.native.ts b/clients/client-groundstation/runtimeConfig.native.ts
index 448b20501319..564dceb965a6 100644
--- a/clients/client-groundstation/runtimeConfig.native.ts
+++ b/clients/client-groundstation/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GroundStationClientConfig) => {
+export const getRuntimeConfig = (config: GroundStationClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-groundstation/runtimeConfig.shared.ts b/clients/client-groundstation/runtimeConfig.shared.ts
index e84d268a68bf..157ba855c80d 100644
--- a/clients/client-groundstation/runtimeConfig.shared.ts
+++ b/clients/client-groundstation/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { GroundStationClientConfig } from "./GroundStationClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GroundStationClientConfig) => ({
+export const getRuntimeConfig = (config: GroundStationClientConfig = {}) => ({
   apiVersion: "2019-05-23",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-groundstation/runtimeConfig.ts b/clients/client-groundstation/runtimeConfig.ts
index 934e402ecb81..312156227b54 100644
--- a/clients/client-groundstation/runtimeConfig.ts
+++ b/clients/client-groundstation/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GroundStationClientConfig) => {
+export const getRuntimeConfig = (config: GroundStationClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-guardduty/runtimeConfig.browser.ts b/clients/client-guardduty/runtimeConfig.browser.ts
index 3b7c977eb989..ef5950b90fe5 100644
--- a/clients/client-guardduty/runtimeConfig.browser.ts
+++ b/clients/client-guardduty/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GuardDutyClientConfig) => {
+export const getRuntimeConfig = (config: GuardDutyClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-guardduty/runtimeConfig.native.ts b/clients/client-guardduty/runtimeConfig.native.ts
index bbe34fc60105..d385d324b15a 100644
--- a/clients/client-guardduty/runtimeConfig.native.ts
+++ b/clients/client-guardduty/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GuardDutyClientConfig) => {
+export const getRuntimeConfig = (config: GuardDutyClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-guardduty/runtimeConfig.shared.ts b/clients/client-guardduty/runtimeConfig.shared.ts
index f0b1b406dfa4..7a61bc4c8867 100644
--- a/clients/client-guardduty/runtimeConfig.shared.ts
+++ b/clients/client-guardduty/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { GuardDutyClientConfig } from "./GuardDutyClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GuardDutyClientConfig) => ({
+export const getRuntimeConfig = (config: GuardDutyClientConfig = {}) => ({
   apiVersion: "2017-11-28",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-guardduty/runtimeConfig.ts b/clients/client-guardduty/runtimeConfig.ts
index f674441819e3..45513dbf23e2 100644
--- a/clients/client-guardduty/runtimeConfig.ts
+++ b/clients/client-guardduty/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: GuardDutyClientConfig) => {
+export const getRuntimeConfig = (config: GuardDutyClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-health/runtimeConfig.browser.ts b/clients/client-health/runtimeConfig.browser.ts
index cf92f97be361..c80059c1dde0 100644
--- a/clients/client-health/runtimeConfig.browser.ts
+++ b/clients/client-health/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: HealthClientConfig) => {
+export const getRuntimeConfig = (config: HealthClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-health/runtimeConfig.native.ts b/clients/client-health/runtimeConfig.native.ts
index ba4414cfbbb7..01d08ca8438f 100644
--- a/clients/client-health/runtimeConfig.native.ts
+++ b/clients/client-health/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: HealthClientConfig) => {
+export const getRuntimeConfig = (config: HealthClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-health/runtimeConfig.shared.ts b/clients/client-health/runtimeConfig.shared.ts
index 749b19072aeb..8aa820dca36f 100644
--- a/clients/client-health/runtimeConfig.shared.ts
+++ b/clients/client-health/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { HealthClientConfig } from "./HealthClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: HealthClientConfig) => ({
+export const getRuntimeConfig = (config: HealthClientConfig = {}) => ({
   apiVersion: "2016-08-04",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-health/runtimeConfig.ts b/clients/client-health/runtimeConfig.ts
index a4a9a5e422fb..2785ea6c9e8a 100644
--- a/clients/client-health/runtimeConfig.ts
+++ b/clients/client-health/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: HealthClientConfig) => {
+export const getRuntimeConfig = (config: HealthClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-healthlake/runtimeConfig.browser.ts b/clients/client-healthlake/runtimeConfig.browser.ts
index 3b83fece8a93..834a051b3f11 100644
--- a/clients/client-healthlake/runtimeConfig.browser.ts
+++ b/clients/client-healthlake/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: HealthLakeClientConfig) => {
+export const getRuntimeConfig = (config: HealthLakeClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-healthlake/runtimeConfig.native.ts b/clients/client-healthlake/runtimeConfig.native.ts
index 02a80ebe2a90..5f01eaa035ec 100644
--- a/clients/client-healthlake/runtimeConfig.native.ts
+++ b/clients/client-healthlake/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: HealthLakeClientConfig) => {
+export const getRuntimeConfig = (config: HealthLakeClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-healthlake/runtimeConfig.shared.ts b/clients/client-healthlake/runtimeConfig.shared.ts
index 87d86b911834..23f82e2f6225 100644
--- a/clients/client-healthlake/runtimeConfig.shared.ts
+++ b/clients/client-healthlake/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { HealthLakeClientConfig } from "./HealthLakeClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: HealthLakeClientConfig) => ({
+export const getRuntimeConfig = (config: HealthLakeClientConfig = {}) => ({
   apiVersion: "2017-07-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-healthlake/runtimeConfig.ts b/clients/client-healthlake/runtimeConfig.ts
index 0342a655eed3..10e111d1ef37 100644
--- a/clients/client-healthlake/runtimeConfig.ts
+++ b/clients/client-healthlake/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: HealthLakeClientConfig) => {
+export const getRuntimeConfig = (config: HealthLakeClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-honeycode/runtimeConfig.browser.ts b/clients/client-honeycode/runtimeConfig.browser.ts
index cc8ef6a609bb..029fe8bc78de 100644
--- a/clients/client-honeycode/runtimeConfig.browser.ts
+++ b/clients/client-honeycode/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: HoneycodeClientConfig) => {
+export const getRuntimeConfig = (config: HoneycodeClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-honeycode/runtimeConfig.native.ts b/clients/client-honeycode/runtimeConfig.native.ts
index c3a556dc6b6e..306d5317a7ea 100644
--- a/clients/client-honeycode/runtimeConfig.native.ts
+++ b/clients/client-honeycode/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: HoneycodeClientConfig) => {
+export const getRuntimeConfig = (config: HoneycodeClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-honeycode/runtimeConfig.shared.ts b/clients/client-honeycode/runtimeConfig.shared.ts
index 748b828c065e..b27fa4a7cc2d 100644
--- a/clients/client-honeycode/runtimeConfig.shared.ts
+++ b/clients/client-honeycode/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { HoneycodeClientConfig } from "./HoneycodeClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: HoneycodeClientConfig) => ({
+export const getRuntimeConfig = (config: HoneycodeClientConfig = {}) => ({
   apiVersion: "2020-03-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-honeycode/runtimeConfig.ts b/clients/client-honeycode/runtimeConfig.ts
index f9f3149f2168..d0b69ae46e81 100644
--- a/clients/client-honeycode/runtimeConfig.ts
+++ b/clients/client-honeycode/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: HoneycodeClientConfig) => {
+export const getRuntimeConfig = (config: HoneycodeClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iam/runtimeConfig.browser.ts b/clients/client-iam/runtimeConfig.browser.ts
index cbab4359cdad..59c908c0d22f 100644
--- a/clients/client-iam/runtimeConfig.browser.ts
+++ b/clients/client-iam/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IAMClientConfig) => {
+export const getRuntimeConfig = (config: IAMClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iam/runtimeConfig.native.ts b/clients/client-iam/runtimeConfig.native.ts
index d221e60fab82..118e8986e910 100644
--- a/clients/client-iam/runtimeConfig.native.ts
+++ b/clients/client-iam/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IAMClientConfig) => {
+export const getRuntimeConfig = (config: IAMClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-iam/runtimeConfig.shared.ts b/clients/client-iam/runtimeConfig.shared.ts
index f2c648466388..0b9dfda36b38 100644
--- a/clients/client-iam/runtimeConfig.shared.ts
+++ b/clients/client-iam/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { IAMClientConfig } from "./IAMClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IAMClientConfig) => ({
+export const getRuntimeConfig = (config: IAMClientConfig = {}) => ({
   apiVersion: "2010-05-08",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-iam/runtimeConfig.ts b/clients/client-iam/runtimeConfig.ts
index 4b362166f98b..3dc5a8487d03 100644
--- a/clients/client-iam/runtimeConfig.ts
+++ b/clients/client-iam/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IAMClientConfig) => {
+export const getRuntimeConfig = (config: IAMClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-identitystore/runtimeConfig.browser.ts b/clients/client-identitystore/runtimeConfig.browser.ts
index 6f1e5a1ee0ef..b4307b143a3e 100644
--- a/clients/client-identitystore/runtimeConfig.browser.ts
+++ b/clients/client-identitystore/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IdentitystoreClientConfig) => {
+export const getRuntimeConfig = (config: IdentitystoreClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-identitystore/runtimeConfig.native.ts b/clients/client-identitystore/runtimeConfig.native.ts
index 268e07d28878..aecb819d5273 100644
--- a/clients/client-identitystore/runtimeConfig.native.ts
+++ b/clients/client-identitystore/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IdentitystoreClientConfig) => {
+export const getRuntimeConfig = (config: IdentitystoreClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-identitystore/runtimeConfig.shared.ts b/clients/client-identitystore/runtimeConfig.shared.ts
index 924de6c0e1f2..5c8e12825459 100644
--- a/clients/client-identitystore/runtimeConfig.shared.ts
+++ b/clients/client-identitystore/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { IdentitystoreClientConfig } from "./IdentitystoreClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IdentitystoreClientConfig) => ({
+export const getRuntimeConfig = (config: IdentitystoreClientConfig = {}) => ({
   apiVersion: "2020-06-15",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-identitystore/runtimeConfig.ts b/clients/client-identitystore/runtimeConfig.ts
index aa5f8a393039..f8012270a097 100644
--- a/clients/client-identitystore/runtimeConfig.ts
+++ b/clients/client-identitystore/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IdentitystoreClientConfig) => {
+export const getRuntimeConfig = (config: IdentitystoreClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-imagebuilder/runtimeConfig.browser.ts b/clients/client-imagebuilder/runtimeConfig.browser.ts
index da4a2ed128c6..5c3bcb70bbf2 100644
--- a/clients/client-imagebuilder/runtimeConfig.browser.ts
+++ b/clients/client-imagebuilder/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ImagebuilderClientConfig) => {
+export const getRuntimeConfig = (config: ImagebuilderClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-imagebuilder/runtimeConfig.native.ts b/clients/client-imagebuilder/runtimeConfig.native.ts
index fb92dff232cd..f79c17404f09 100644
--- a/clients/client-imagebuilder/runtimeConfig.native.ts
+++ b/clients/client-imagebuilder/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ImagebuilderClientConfig) => {
+export const getRuntimeConfig = (config: ImagebuilderClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-imagebuilder/runtimeConfig.shared.ts b/clients/client-imagebuilder/runtimeConfig.shared.ts
index 7618708bd8c8..c6d0942897db 100644
--- a/clients/client-imagebuilder/runtimeConfig.shared.ts
+++ b/clients/client-imagebuilder/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ImagebuilderClientConfig } from "./ImagebuilderClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ImagebuilderClientConfig) => ({
+export const getRuntimeConfig = (config: ImagebuilderClientConfig = {}) => ({
   apiVersion: "2019-12-02",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-imagebuilder/runtimeConfig.ts b/clients/client-imagebuilder/runtimeConfig.ts
index 75676fc8add6..0e54d7109b9d 100644
--- a/clients/client-imagebuilder/runtimeConfig.ts
+++ b/clients/client-imagebuilder/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ImagebuilderClientConfig) => {
+export const getRuntimeConfig = (config: ImagebuilderClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-inspector/runtimeConfig.browser.ts b/clients/client-inspector/runtimeConfig.browser.ts
index 84c01966e702..9c21819240c9 100644
--- a/clients/client-inspector/runtimeConfig.browser.ts
+++ b/clients/client-inspector/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: InspectorClientConfig) => {
+export const getRuntimeConfig = (config: InspectorClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-inspector/runtimeConfig.native.ts b/clients/client-inspector/runtimeConfig.native.ts
index 9916d3f67913..99695f5f14d6 100644
--- a/clients/client-inspector/runtimeConfig.native.ts
+++ b/clients/client-inspector/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: InspectorClientConfig) => {
+export const getRuntimeConfig = (config: InspectorClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-inspector/runtimeConfig.shared.ts b/clients/client-inspector/runtimeConfig.shared.ts
index 9f2d1d67ccf3..f1334e8d6d95 100644
--- a/clients/client-inspector/runtimeConfig.shared.ts
+++ b/clients/client-inspector/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { InspectorClientConfig } from "./InspectorClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: InspectorClientConfig) => ({
+export const getRuntimeConfig = (config: InspectorClientConfig = {}) => ({
   apiVersion: "2016-02-16",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-inspector/runtimeConfig.ts b/clients/client-inspector/runtimeConfig.ts
index 500fabf45472..23e9bcbcc723 100644
--- a/clients/client-inspector/runtimeConfig.ts
+++ b/clients/client-inspector/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: InspectorClientConfig) => {
+export const getRuntimeConfig = (config: InspectorClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iot-1click-devices-service/runtimeConfig.browser.ts b/clients/client-iot-1click-devices-service/runtimeConfig.browser.ts
index aac868b53e37..1ae5970f34de 100644
--- a/clients/client-iot-1click-devices-service/runtimeConfig.browser.ts
+++ b/clients/client-iot-1click-devices-service/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoT1ClickDevicesServiceClientConfig) => {
+export const getRuntimeConfig = (config: IoT1ClickDevicesServiceClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iot-1click-devices-service/runtimeConfig.native.ts b/clients/client-iot-1click-devices-service/runtimeConfig.native.ts
index 92a20c7792eb..b630f8492ee9 100644
--- a/clients/client-iot-1click-devices-service/runtimeConfig.native.ts
+++ b/clients/client-iot-1click-devices-service/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoT1ClickDevicesServiceClientConfig) => {
+export const getRuntimeConfig = (config: IoT1ClickDevicesServiceClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-iot-1click-devices-service/runtimeConfig.shared.ts b/clients/client-iot-1click-devices-service/runtimeConfig.shared.ts
index a4db5db5b163..128a6a88743e 100644
--- a/clients/client-iot-1click-devices-service/runtimeConfig.shared.ts
+++ b/clients/client-iot-1click-devices-service/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { IoT1ClickDevicesServiceClientConfig } from "./IoT1ClickDevicesServiceCl
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoT1ClickDevicesServiceClientConfig) => ({
+export const getRuntimeConfig = (config: IoT1ClickDevicesServiceClientConfig = {}) => ({
   apiVersion: "2018-05-14",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-iot-1click-devices-service/runtimeConfig.ts b/clients/client-iot-1click-devices-service/runtimeConfig.ts
index 929a62b7d983..0bcb6fc2150c 100644
--- a/clients/client-iot-1click-devices-service/runtimeConfig.ts
+++ b/clients/client-iot-1click-devices-service/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoT1ClickDevicesServiceClientConfig) => {
+export const getRuntimeConfig = (config: IoT1ClickDevicesServiceClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iot-1click-projects/runtimeConfig.browser.ts b/clients/client-iot-1click-projects/runtimeConfig.browser.ts
index 85954523d680..6d7c4393a79f 100644
--- a/clients/client-iot-1click-projects/runtimeConfig.browser.ts
+++ b/clients/client-iot-1click-projects/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoT1ClickProjectsClientConfig) => {
+export const getRuntimeConfig = (config: IoT1ClickProjectsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iot-1click-projects/runtimeConfig.native.ts b/clients/client-iot-1click-projects/runtimeConfig.native.ts
index 4635b922d3be..bf2ded1e510e 100644
--- a/clients/client-iot-1click-projects/runtimeConfig.native.ts
+++ b/clients/client-iot-1click-projects/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoT1ClickProjectsClientConfig) => {
+export const getRuntimeConfig = (config: IoT1ClickProjectsClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-iot-1click-projects/runtimeConfig.shared.ts b/clients/client-iot-1click-projects/runtimeConfig.shared.ts
index c0e8c308f9e9..6f8e18e7377a 100644
--- a/clients/client-iot-1click-projects/runtimeConfig.shared.ts
+++ b/clients/client-iot-1click-projects/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { IoT1ClickProjectsClientConfig } from "./IoT1ClickProjectsClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoT1ClickProjectsClientConfig) => ({
+export const getRuntimeConfig = (config: IoT1ClickProjectsClientConfig = {}) => ({
   apiVersion: "2018-05-14",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-iot-1click-projects/runtimeConfig.ts b/clients/client-iot-1click-projects/runtimeConfig.ts
index e455a2defed2..6515b72d3a75 100644
--- a/clients/client-iot-1click-projects/runtimeConfig.ts
+++ b/clients/client-iot-1click-projects/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoT1ClickProjectsClientConfig) => {
+export const getRuntimeConfig = (config: IoT1ClickProjectsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iot-data-plane/runtimeConfig.browser.ts b/clients/client-iot-data-plane/runtimeConfig.browser.ts
index d3d57f0a40b6..5257f4da77ed 100644
--- a/clients/client-iot-data-plane/runtimeConfig.browser.ts
+++ b/clients/client-iot-data-plane/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTDataPlaneClientConfig) => {
+export const getRuntimeConfig = (config: IoTDataPlaneClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iot-data-plane/runtimeConfig.native.ts b/clients/client-iot-data-plane/runtimeConfig.native.ts
index aaf57f58a32a..e9fca76377b4 100644
--- a/clients/client-iot-data-plane/runtimeConfig.native.ts
+++ b/clients/client-iot-data-plane/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTDataPlaneClientConfig) => {
+export const getRuntimeConfig = (config: IoTDataPlaneClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-iot-data-plane/runtimeConfig.shared.ts b/clients/client-iot-data-plane/runtimeConfig.shared.ts
index 1b22298e8de0..6005d1d2ac0b 100644
--- a/clients/client-iot-data-plane/runtimeConfig.shared.ts
+++ b/clients/client-iot-data-plane/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { IoTDataPlaneClientConfig } from "./IoTDataPlaneClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTDataPlaneClientConfig) => ({
+export const getRuntimeConfig = (config: IoTDataPlaneClientConfig = {}) => ({
   apiVersion: "2015-05-28",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-iot-data-plane/runtimeConfig.ts b/clients/client-iot-data-plane/runtimeConfig.ts
index 7a03cb83ca48..f48b53519ecb 100644
--- a/clients/client-iot-data-plane/runtimeConfig.ts
+++ b/clients/client-iot-data-plane/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTDataPlaneClientConfig) => {
+export const getRuntimeConfig = (config: IoTDataPlaneClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iot-events-data/runtimeConfig.browser.ts b/clients/client-iot-events-data/runtimeConfig.browser.ts
index d7f8fc6326a7..c48b31905e6b 100644
--- a/clients/client-iot-events-data/runtimeConfig.browser.ts
+++ b/clients/client-iot-events-data/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTEventsDataClientConfig) => {
+export const getRuntimeConfig = (config: IoTEventsDataClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iot-events-data/runtimeConfig.native.ts b/clients/client-iot-events-data/runtimeConfig.native.ts
index f925574a33f3..ac4ccaeaa3e7 100644
--- a/clients/client-iot-events-data/runtimeConfig.native.ts
+++ b/clients/client-iot-events-data/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTEventsDataClientConfig) => {
+export const getRuntimeConfig = (config: IoTEventsDataClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-iot-events-data/runtimeConfig.shared.ts b/clients/client-iot-events-data/runtimeConfig.shared.ts
index 195f511b14dc..49134929fd6d 100644
--- a/clients/client-iot-events-data/runtimeConfig.shared.ts
+++ b/clients/client-iot-events-data/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { IoTEventsDataClientConfig } from "./IoTEventsDataClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTEventsDataClientConfig) => ({
+export const getRuntimeConfig = (config: IoTEventsDataClientConfig = {}) => ({
   apiVersion: "2018-10-23",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-iot-events-data/runtimeConfig.ts b/clients/client-iot-events-data/runtimeConfig.ts
index ebcd80bbd86d..0373c43b079f 100644
--- a/clients/client-iot-events-data/runtimeConfig.ts
+++ b/clients/client-iot-events-data/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTEventsDataClientConfig) => {
+export const getRuntimeConfig = (config: IoTEventsDataClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iot-events/runtimeConfig.browser.ts b/clients/client-iot-events/runtimeConfig.browser.ts
index 328da661ba67..f8e237faf398 100644
--- a/clients/client-iot-events/runtimeConfig.browser.ts
+++ b/clients/client-iot-events/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTEventsClientConfig) => {
+export const getRuntimeConfig = (config: IoTEventsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iot-events/runtimeConfig.native.ts b/clients/client-iot-events/runtimeConfig.native.ts
index 67fca378f730..f2a1e86d1c93 100644
--- a/clients/client-iot-events/runtimeConfig.native.ts
+++ b/clients/client-iot-events/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTEventsClientConfig) => {
+export const getRuntimeConfig = (config: IoTEventsClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-iot-events/runtimeConfig.shared.ts b/clients/client-iot-events/runtimeConfig.shared.ts
index 359b6d3c556e..566d354a2cd1 100644
--- a/clients/client-iot-events/runtimeConfig.shared.ts
+++ b/clients/client-iot-events/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { IoTEventsClientConfig } from "./IoTEventsClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTEventsClientConfig) => ({
+export const getRuntimeConfig = (config: IoTEventsClientConfig = {}) => ({
   apiVersion: "2018-07-27",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-iot-events/runtimeConfig.ts b/clients/client-iot-events/runtimeConfig.ts
index f59e61a96a0b..d328e885b211 100644
--- a/clients/client-iot-events/runtimeConfig.ts
+++ b/clients/client-iot-events/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTEventsClientConfig) => {
+export const getRuntimeConfig = (config: IoTEventsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iot-jobs-data-plane/runtimeConfig.browser.ts b/clients/client-iot-jobs-data-plane/runtimeConfig.browser.ts
index 2f80c81dfe4f..f8053605f955 100644
--- a/clients/client-iot-jobs-data-plane/runtimeConfig.browser.ts
+++ b/clients/client-iot-jobs-data-plane/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTJobsDataPlaneClientConfig) => {
+export const getRuntimeConfig = (config: IoTJobsDataPlaneClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iot-jobs-data-plane/runtimeConfig.native.ts b/clients/client-iot-jobs-data-plane/runtimeConfig.native.ts
index 423d1d958cb2..a8e958579250 100644
--- a/clients/client-iot-jobs-data-plane/runtimeConfig.native.ts
+++ b/clients/client-iot-jobs-data-plane/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTJobsDataPlaneClientConfig) => {
+export const getRuntimeConfig = (config: IoTJobsDataPlaneClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-iot-jobs-data-plane/runtimeConfig.shared.ts b/clients/client-iot-jobs-data-plane/runtimeConfig.shared.ts
index d4f858ef4a7c..31528f110b1b 100644
--- a/clients/client-iot-jobs-data-plane/runtimeConfig.shared.ts
+++ b/clients/client-iot-jobs-data-plane/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { IoTJobsDataPlaneClientConfig } from "./IoTJobsDataPlaneClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTJobsDataPlaneClientConfig) => ({
+export const getRuntimeConfig = (config: IoTJobsDataPlaneClientConfig = {}) => ({
   apiVersion: "2017-09-29",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-iot-jobs-data-plane/runtimeConfig.ts b/clients/client-iot-jobs-data-plane/runtimeConfig.ts
index 47daf361a316..359e6a92a596 100644
--- a/clients/client-iot-jobs-data-plane/runtimeConfig.ts
+++ b/clients/client-iot-jobs-data-plane/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTJobsDataPlaneClientConfig) => {
+export const getRuntimeConfig = (config: IoTJobsDataPlaneClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iot-wireless/runtimeConfig.browser.ts b/clients/client-iot-wireless/runtimeConfig.browser.ts
index 5bafc877f573..956b0d8e21fc 100644
--- a/clients/client-iot-wireless/runtimeConfig.browser.ts
+++ b/clients/client-iot-wireless/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTWirelessClientConfig) => {
+export const getRuntimeConfig = (config: IoTWirelessClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iot-wireless/runtimeConfig.native.ts b/clients/client-iot-wireless/runtimeConfig.native.ts
index 855d3281eae3..1c9f13d4e273 100644
--- a/clients/client-iot-wireless/runtimeConfig.native.ts
+++ b/clients/client-iot-wireless/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTWirelessClientConfig) => {
+export const getRuntimeConfig = (config: IoTWirelessClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-iot-wireless/runtimeConfig.shared.ts b/clients/client-iot-wireless/runtimeConfig.shared.ts
index 87be4d64605d..ccb93e1c195f 100644
--- a/clients/client-iot-wireless/runtimeConfig.shared.ts
+++ b/clients/client-iot-wireless/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { IoTWirelessClientConfig } from "./IoTWirelessClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTWirelessClientConfig) => ({
+export const getRuntimeConfig = (config: IoTWirelessClientConfig = {}) => ({
   apiVersion: "2020-11-22",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-iot-wireless/runtimeConfig.ts b/clients/client-iot-wireless/runtimeConfig.ts
index 5dc4940d70a0..a2ac622e2813 100644
--- a/clients/client-iot-wireless/runtimeConfig.ts
+++ b/clients/client-iot-wireless/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTWirelessClientConfig) => {
+export const getRuntimeConfig = (config: IoTWirelessClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iot/runtimeConfig.browser.ts b/clients/client-iot/runtimeConfig.browser.ts
index 6db689dda83a..22856dce595d 100644
--- a/clients/client-iot/runtimeConfig.browser.ts
+++ b/clients/client-iot/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTClientConfig) => {
+export const getRuntimeConfig = (config: IoTClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iot/runtimeConfig.native.ts b/clients/client-iot/runtimeConfig.native.ts
index de6fbdc29e04..8b97345afe3b 100644
--- a/clients/client-iot/runtimeConfig.native.ts
+++ b/clients/client-iot/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTClientConfig) => {
+export const getRuntimeConfig = (config: IoTClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-iot/runtimeConfig.shared.ts b/clients/client-iot/runtimeConfig.shared.ts
index d619d030aa61..7dd94f2b8cd3 100644
--- a/clients/client-iot/runtimeConfig.shared.ts
+++ b/clients/client-iot/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { IoTClientConfig } from "./IoTClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTClientConfig) => ({
+export const getRuntimeConfig = (config: IoTClientConfig = {}) => ({
   apiVersion: "2015-05-28",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-iot/runtimeConfig.ts b/clients/client-iot/runtimeConfig.ts
index fab89af60852..f34f20be1b87 100644
--- a/clients/client-iot/runtimeConfig.ts
+++ b/clients/client-iot/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTClientConfig) => {
+export const getRuntimeConfig = (config: IoTClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iotanalytics/runtimeConfig.browser.ts b/clients/client-iotanalytics/runtimeConfig.browser.ts
index 179523da62ce..38bc6dd56014 100644
--- a/clients/client-iotanalytics/runtimeConfig.browser.ts
+++ b/clients/client-iotanalytics/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTAnalyticsClientConfig) => {
+export const getRuntimeConfig = (config: IoTAnalyticsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iotanalytics/runtimeConfig.native.ts b/clients/client-iotanalytics/runtimeConfig.native.ts
index 174810610b29..cacf827956fe 100644
--- a/clients/client-iotanalytics/runtimeConfig.native.ts
+++ b/clients/client-iotanalytics/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTAnalyticsClientConfig) => {
+export const getRuntimeConfig = (config: IoTAnalyticsClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-iotanalytics/runtimeConfig.shared.ts b/clients/client-iotanalytics/runtimeConfig.shared.ts
index 6e709be0c39f..729e73c87bfa 100644
--- a/clients/client-iotanalytics/runtimeConfig.shared.ts
+++ b/clients/client-iotanalytics/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { IoTAnalyticsClientConfig } from "./IoTAnalyticsClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTAnalyticsClientConfig) => ({
+export const getRuntimeConfig = (config: IoTAnalyticsClientConfig = {}) => ({
   apiVersion: "2017-11-27",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-iotanalytics/runtimeConfig.ts b/clients/client-iotanalytics/runtimeConfig.ts
index 36dbfbde6e89..46cfab6819b1 100644
--- a/clients/client-iotanalytics/runtimeConfig.ts
+++ b/clients/client-iotanalytics/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTAnalyticsClientConfig) => {
+export const getRuntimeConfig = (config: IoTAnalyticsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iotdeviceadvisor/runtimeConfig.browser.ts b/clients/client-iotdeviceadvisor/runtimeConfig.browser.ts
index cc21dac4eb3b..ad87e411499d 100644
--- a/clients/client-iotdeviceadvisor/runtimeConfig.browser.ts
+++ b/clients/client-iotdeviceadvisor/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IotDeviceAdvisorClientConfig) => {
+export const getRuntimeConfig = (config: IotDeviceAdvisorClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iotdeviceadvisor/runtimeConfig.native.ts b/clients/client-iotdeviceadvisor/runtimeConfig.native.ts
index 1d82eeafd9fe..708597931324 100644
--- a/clients/client-iotdeviceadvisor/runtimeConfig.native.ts
+++ b/clients/client-iotdeviceadvisor/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IotDeviceAdvisorClientConfig) => {
+export const getRuntimeConfig = (config: IotDeviceAdvisorClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-iotdeviceadvisor/runtimeConfig.shared.ts b/clients/client-iotdeviceadvisor/runtimeConfig.shared.ts
index 14174fdff0df..178bc2ecb0c0 100644
--- a/clients/client-iotdeviceadvisor/runtimeConfig.shared.ts
+++ b/clients/client-iotdeviceadvisor/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { IotDeviceAdvisorClientConfig } from "./IotDeviceAdvisorClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IotDeviceAdvisorClientConfig) => ({
+export const getRuntimeConfig = (config: IotDeviceAdvisorClientConfig = {}) => ({
   apiVersion: "2020-09-18",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-iotdeviceadvisor/runtimeConfig.ts b/clients/client-iotdeviceadvisor/runtimeConfig.ts
index 2e93862053b8..25668a365f27 100644
--- a/clients/client-iotdeviceadvisor/runtimeConfig.ts
+++ b/clients/client-iotdeviceadvisor/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IotDeviceAdvisorClientConfig) => {
+export const getRuntimeConfig = (config: IotDeviceAdvisorClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iotfleethub/runtimeConfig.browser.ts b/clients/client-iotfleethub/runtimeConfig.browser.ts
index 83a7e0d8418b..69ebe05672c7 100644
--- a/clients/client-iotfleethub/runtimeConfig.browser.ts
+++ b/clients/client-iotfleethub/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTFleetHubClientConfig) => {
+export const getRuntimeConfig = (config: IoTFleetHubClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iotfleethub/runtimeConfig.native.ts b/clients/client-iotfleethub/runtimeConfig.native.ts
index 15bddb6b57f2..6379f72488a1 100644
--- a/clients/client-iotfleethub/runtimeConfig.native.ts
+++ b/clients/client-iotfleethub/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTFleetHubClientConfig) => {
+export const getRuntimeConfig = (config: IoTFleetHubClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-iotfleethub/runtimeConfig.shared.ts b/clients/client-iotfleethub/runtimeConfig.shared.ts
index 291046dc167b..08bfa7c9d4a2 100644
--- a/clients/client-iotfleethub/runtimeConfig.shared.ts
+++ b/clients/client-iotfleethub/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { IoTFleetHubClientConfig } from "./IoTFleetHubClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTFleetHubClientConfig) => ({
+export const getRuntimeConfig = (config: IoTFleetHubClientConfig = {}) => ({
   apiVersion: "2020-11-03",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-iotfleethub/runtimeConfig.ts b/clients/client-iotfleethub/runtimeConfig.ts
index d6e54df8edba..40b233fade54 100644
--- a/clients/client-iotfleethub/runtimeConfig.ts
+++ b/clients/client-iotfleethub/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTFleetHubClientConfig) => {
+export const getRuntimeConfig = (config: IoTFleetHubClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iotsecuretunneling/runtimeConfig.browser.ts b/clients/client-iotsecuretunneling/runtimeConfig.browser.ts
index 01013153f6ad..b230780ff4de 100644
--- a/clients/client-iotsecuretunneling/runtimeConfig.browser.ts
+++ b/clients/client-iotsecuretunneling/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTSecureTunnelingClientConfig) => {
+export const getRuntimeConfig = (config: IoTSecureTunnelingClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iotsecuretunneling/runtimeConfig.native.ts b/clients/client-iotsecuretunneling/runtimeConfig.native.ts
index 21d4fc7d00e3..e0998af682a9 100644
--- a/clients/client-iotsecuretunneling/runtimeConfig.native.ts
+++ b/clients/client-iotsecuretunneling/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTSecureTunnelingClientConfig) => {
+export const getRuntimeConfig = (config: IoTSecureTunnelingClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-iotsecuretunneling/runtimeConfig.shared.ts b/clients/client-iotsecuretunneling/runtimeConfig.shared.ts
index c5c92ec34b42..ebb9e2647fbf 100644
--- a/clients/client-iotsecuretunneling/runtimeConfig.shared.ts
+++ b/clients/client-iotsecuretunneling/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { IoTSecureTunnelingClientConfig } from "./IoTSecureTunnelingClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTSecureTunnelingClientConfig) => ({
+export const getRuntimeConfig = (config: IoTSecureTunnelingClientConfig = {}) => ({
   apiVersion: "2018-10-05",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-iotsecuretunneling/runtimeConfig.ts b/clients/client-iotsecuretunneling/runtimeConfig.ts
index 344916d1ac2b..9c4dc35dd290 100644
--- a/clients/client-iotsecuretunneling/runtimeConfig.ts
+++ b/clients/client-iotsecuretunneling/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTSecureTunnelingClientConfig) => {
+export const getRuntimeConfig = (config: IoTSecureTunnelingClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iotsitewise/runtimeConfig.browser.ts b/clients/client-iotsitewise/runtimeConfig.browser.ts
index 6bad9b95fa9b..0833fc1da2c6 100644
--- a/clients/client-iotsitewise/runtimeConfig.browser.ts
+++ b/clients/client-iotsitewise/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTSiteWiseClientConfig) => {
+export const getRuntimeConfig = (config: IoTSiteWiseClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iotsitewise/runtimeConfig.native.ts b/clients/client-iotsitewise/runtimeConfig.native.ts
index c43466b24ae7..392e7189afdd 100644
--- a/clients/client-iotsitewise/runtimeConfig.native.ts
+++ b/clients/client-iotsitewise/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTSiteWiseClientConfig) => {
+export const getRuntimeConfig = (config: IoTSiteWiseClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-iotsitewise/runtimeConfig.shared.ts b/clients/client-iotsitewise/runtimeConfig.shared.ts
index f9170625c10c..128a6b8213ea 100644
--- a/clients/client-iotsitewise/runtimeConfig.shared.ts
+++ b/clients/client-iotsitewise/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { IoTSiteWiseClientConfig } from "./IoTSiteWiseClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTSiteWiseClientConfig) => ({
+export const getRuntimeConfig = (config: IoTSiteWiseClientConfig = {}) => ({
   apiVersion: "2019-12-02",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-iotsitewise/runtimeConfig.ts b/clients/client-iotsitewise/runtimeConfig.ts
index 3a8fd56123f4..f951df7f3429 100644
--- a/clients/client-iotsitewise/runtimeConfig.ts
+++ b/clients/client-iotsitewise/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTSiteWiseClientConfig) => {
+export const getRuntimeConfig = (config: IoTSiteWiseClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iotthingsgraph/runtimeConfig.browser.ts b/clients/client-iotthingsgraph/runtimeConfig.browser.ts
index 99a7269772c2..6f4d54c3dbf9 100644
--- a/clients/client-iotthingsgraph/runtimeConfig.browser.ts
+++ b/clients/client-iotthingsgraph/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTThingsGraphClientConfig) => {
+export const getRuntimeConfig = (config: IoTThingsGraphClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-iotthingsgraph/runtimeConfig.native.ts b/clients/client-iotthingsgraph/runtimeConfig.native.ts
index d97fc41d1e3f..1d44e8877dcd 100644
--- a/clients/client-iotthingsgraph/runtimeConfig.native.ts
+++ b/clients/client-iotthingsgraph/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTThingsGraphClientConfig) => {
+export const getRuntimeConfig = (config: IoTThingsGraphClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-iotthingsgraph/runtimeConfig.shared.ts b/clients/client-iotthingsgraph/runtimeConfig.shared.ts
index ec1e7f7112e9..cb19e419cdc2 100644
--- a/clients/client-iotthingsgraph/runtimeConfig.shared.ts
+++ b/clients/client-iotthingsgraph/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { IoTThingsGraphClientConfig } from "./IoTThingsGraphClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTThingsGraphClientConfig) => ({
+export const getRuntimeConfig = (config: IoTThingsGraphClientConfig = {}) => ({
   apiVersion: "2018-09-06",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-iotthingsgraph/runtimeConfig.ts b/clients/client-iotthingsgraph/runtimeConfig.ts
index d91fbaeb2994..1ff85248e24a 100644
--- a/clients/client-iotthingsgraph/runtimeConfig.ts
+++ b/clients/client-iotthingsgraph/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IoTThingsGraphClientConfig) => {
+export const getRuntimeConfig = (config: IoTThingsGraphClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-ivs/runtimeConfig.browser.ts b/clients/client-ivs/runtimeConfig.browser.ts
index 5f85c9138630..2e75b0a08928 100644
--- a/clients/client-ivs/runtimeConfig.browser.ts
+++ b/clients/client-ivs/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IvsClientConfig) => {
+export const getRuntimeConfig = (config: IvsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-ivs/runtimeConfig.native.ts b/clients/client-ivs/runtimeConfig.native.ts
index d1cbe19911e8..96df7d1c3e5f 100644
--- a/clients/client-ivs/runtimeConfig.native.ts
+++ b/clients/client-ivs/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IvsClientConfig) => {
+export const getRuntimeConfig = (config: IvsClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-ivs/runtimeConfig.shared.ts b/clients/client-ivs/runtimeConfig.shared.ts
index eb40e88a0362..3882a87142c7 100644
--- a/clients/client-ivs/runtimeConfig.shared.ts
+++ b/clients/client-ivs/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { IvsClientConfig } from "./IvsClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IvsClientConfig) => ({
+export const getRuntimeConfig = (config: IvsClientConfig = {}) => ({
   apiVersion: "2020-07-14",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-ivs/runtimeConfig.ts b/clients/client-ivs/runtimeConfig.ts
index 1cb76cd8d0a4..c11fd5c56059 100644
--- a/clients/client-ivs/runtimeConfig.ts
+++ b/clients/client-ivs/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: IvsClientConfig) => {
+export const getRuntimeConfig = (config: IvsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-kafka/runtimeConfig.browser.ts b/clients/client-kafka/runtimeConfig.browser.ts
index 8562d039dadb..578264e3171c 100644
--- a/clients/client-kafka/runtimeConfig.browser.ts
+++ b/clients/client-kafka/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KafkaClientConfig) => {
+export const getRuntimeConfig = (config: KafkaClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-kafka/runtimeConfig.native.ts b/clients/client-kafka/runtimeConfig.native.ts
index 4bc8cfff5ce5..d6e2da24d3f1 100644
--- a/clients/client-kafka/runtimeConfig.native.ts
+++ b/clients/client-kafka/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KafkaClientConfig) => {
+export const getRuntimeConfig = (config: KafkaClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-kafka/runtimeConfig.shared.ts b/clients/client-kafka/runtimeConfig.shared.ts
index b3018256d8fb..443226f33063 100644
--- a/clients/client-kafka/runtimeConfig.shared.ts
+++ b/clients/client-kafka/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { KafkaClientConfig } from "./KafkaClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KafkaClientConfig) => ({
+export const getRuntimeConfig = (config: KafkaClientConfig = {}) => ({
   apiVersion: "2018-11-14",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-kafka/runtimeConfig.ts b/clients/client-kafka/runtimeConfig.ts
index 6b1869378053..bb7c89cb3c46 100644
--- a/clients/client-kafka/runtimeConfig.ts
+++ b/clients/client-kafka/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KafkaClientConfig) => {
+export const getRuntimeConfig = (config: KafkaClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-kendra/runtimeConfig.browser.ts b/clients/client-kendra/runtimeConfig.browser.ts
index 9766e630bfe3..32cdaeab4fbf 100644
--- a/clients/client-kendra/runtimeConfig.browser.ts
+++ b/clients/client-kendra/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KendraClientConfig) => {
+export const getRuntimeConfig = (config: KendraClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-kendra/runtimeConfig.native.ts b/clients/client-kendra/runtimeConfig.native.ts
index 4b9896fe5183..58dbe95bce18 100644
--- a/clients/client-kendra/runtimeConfig.native.ts
+++ b/clients/client-kendra/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KendraClientConfig) => {
+export const getRuntimeConfig = (config: KendraClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-kendra/runtimeConfig.shared.ts b/clients/client-kendra/runtimeConfig.shared.ts
index 2fd4a11e6162..ffcf23f67792 100644
--- a/clients/client-kendra/runtimeConfig.shared.ts
+++ b/clients/client-kendra/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { KendraClientConfig } from "./KendraClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KendraClientConfig) => ({
+export const getRuntimeConfig = (config: KendraClientConfig = {}) => ({
   apiVersion: "2019-02-03",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-kendra/runtimeConfig.ts b/clients/client-kendra/runtimeConfig.ts
index 3016ebe9cdd5..3a8d2f5ab5c0 100644
--- a/clients/client-kendra/runtimeConfig.ts
+++ b/clients/client-kendra/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KendraClientConfig) => {
+export const getRuntimeConfig = (config: KendraClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-kinesis-analytics-v2/runtimeConfig.browser.ts b/clients/client-kinesis-analytics-v2/runtimeConfig.browser.ts
index b08ab42a0df4..a8693cde41fc 100644
--- a/clients/client-kinesis-analytics-v2/runtimeConfig.browser.ts
+++ b/clients/client-kinesis-analytics-v2/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KinesisAnalyticsV2ClientConfig) => {
+export const getRuntimeConfig = (config: KinesisAnalyticsV2ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-kinesis-analytics-v2/runtimeConfig.native.ts b/clients/client-kinesis-analytics-v2/runtimeConfig.native.ts
index 192a06fd4985..14616944b8ff 100644
--- a/clients/client-kinesis-analytics-v2/runtimeConfig.native.ts
+++ b/clients/client-kinesis-analytics-v2/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KinesisAnalyticsV2ClientConfig) => {
+export const getRuntimeConfig = (config: KinesisAnalyticsV2ClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-kinesis-analytics-v2/runtimeConfig.shared.ts b/clients/client-kinesis-analytics-v2/runtimeConfig.shared.ts
index 07053bda9de1..2371a6b9dcb0 100644
--- a/clients/client-kinesis-analytics-v2/runtimeConfig.shared.ts
+++ b/clients/client-kinesis-analytics-v2/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { KinesisAnalyticsV2ClientConfig } from "./KinesisAnalyticsV2Client";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KinesisAnalyticsV2ClientConfig) => ({
+export const getRuntimeConfig = (config: KinesisAnalyticsV2ClientConfig = {}) => ({
   apiVersion: "2018-05-23",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-kinesis-analytics-v2/runtimeConfig.ts b/clients/client-kinesis-analytics-v2/runtimeConfig.ts
index 40d682ea245c..de361d20223a 100644
--- a/clients/client-kinesis-analytics-v2/runtimeConfig.ts
+++ b/clients/client-kinesis-analytics-v2/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KinesisAnalyticsV2ClientConfig) => {
+export const getRuntimeConfig = (config: KinesisAnalyticsV2ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-kinesis-analytics/runtimeConfig.browser.ts b/clients/client-kinesis-analytics/runtimeConfig.browser.ts
index d2c7681c79de..e2ef6f71c492 100644
--- a/clients/client-kinesis-analytics/runtimeConfig.browser.ts
+++ b/clients/client-kinesis-analytics/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KinesisAnalyticsClientConfig) => {
+export const getRuntimeConfig = (config: KinesisAnalyticsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-kinesis-analytics/runtimeConfig.native.ts b/clients/client-kinesis-analytics/runtimeConfig.native.ts
index a1a9c9f64514..7580d6752bde 100644
--- a/clients/client-kinesis-analytics/runtimeConfig.native.ts
+++ b/clients/client-kinesis-analytics/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KinesisAnalyticsClientConfig) => {
+export const getRuntimeConfig = (config: KinesisAnalyticsClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-kinesis-analytics/runtimeConfig.shared.ts b/clients/client-kinesis-analytics/runtimeConfig.shared.ts
index 2351e4420bac..0e1d76b9e663 100644
--- a/clients/client-kinesis-analytics/runtimeConfig.shared.ts
+++ b/clients/client-kinesis-analytics/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { KinesisAnalyticsClientConfig } from "./KinesisAnalyticsClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KinesisAnalyticsClientConfig) => ({
+export const getRuntimeConfig = (config: KinesisAnalyticsClientConfig = {}) => ({
   apiVersion: "2015-08-14",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-kinesis-analytics/runtimeConfig.ts b/clients/client-kinesis-analytics/runtimeConfig.ts
index 22e3866cde01..fdddaaafde5e 100644
--- a/clients/client-kinesis-analytics/runtimeConfig.ts
+++ b/clients/client-kinesis-analytics/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KinesisAnalyticsClientConfig) => {
+export const getRuntimeConfig = (config: KinesisAnalyticsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-kinesis-video-archived-media/runtimeConfig.browser.ts b/clients/client-kinesis-video-archived-media/runtimeConfig.browser.ts
index 46aee5b2aa1a..1960616f1c40 100644
--- a/clients/client-kinesis-video-archived-media/runtimeConfig.browser.ts
+++ b/clients/client-kinesis-video-archived-media/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KinesisVideoArchivedMediaClientConfig) => {
+export const getRuntimeConfig = (config: KinesisVideoArchivedMediaClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-kinesis-video-archived-media/runtimeConfig.native.ts b/clients/client-kinesis-video-archived-media/runtimeConfig.native.ts
index 4d5e2eeb88a1..861657f8d321 100644
--- a/clients/client-kinesis-video-archived-media/runtimeConfig.native.ts
+++ b/clients/client-kinesis-video-archived-media/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KinesisVideoArchivedMediaClientConfig) => {
+export const getRuntimeConfig = (config: KinesisVideoArchivedMediaClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-kinesis-video-archived-media/runtimeConfig.shared.ts b/clients/client-kinesis-video-archived-media/runtimeConfig.shared.ts
index 25b0cb8de7b7..475ef1be57de 100644
--- a/clients/client-kinesis-video-archived-media/runtimeConfig.shared.ts
+++ b/clients/client-kinesis-video-archived-media/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { KinesisVideoArchivedMediaClientConfig } from "./KinesisVideoArchivedMed
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KinesisVideoArchivedMediaClientConfig) => ({
+export const getRuntimeConfig = (config: KinesisVideoArchivedMediaClientConfig = {}) => ({
   apiVersion: "2017-09-30",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-kinesis-video-archived-media/runtimeConfig.ts b/clients/client-kinesis-video-archived-media/runtimeConfig.ts
index 205bce509e5d..ba7a1b8832f6 100644
--- a/clients/client-kinesis-video-archived-media/runtimeConfig.ts
+++ b/clients/client-kinesis-video-archived-media/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KinesisVideoArchivedMediaClientConfig) => {
+export const getRuntimeConfig = (config: KinesisVideoArchivedMediaClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-kinesis-video-media/runtimeConfig.browser.ts b/clients/client-kinesis-video-media/runtimeConfig.browser.ts
index 93262a2f8885..3537fba7cc90 100644
--- a/clients/client-kinesis-video-media/runtimeConfig.browser.ts
+++ b/clients/client-kinesis-video-media/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KinesisVideoMediaClientConfig) => {
+export const getRuntimeConfig = (config: KinesisVideoMediaClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-kinesis-video-media/runtimeConfig.native.ts b/clients/client-kinesis-video-media/runtimeConfig.native.ts
index 1615e63802ee..2f4559372c8a 100644
--- a/clients/client-kinesis-video-media/runtimeConfig.native.ts
+++ b/clients/client-kinesis-video-media/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KinesisVideoMediaClientConfig) => {
+export const getRuntimeConfig = (config: KinesisVideoMediaClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-kinesis-video-media/runtimeConfig.shared.ts b/clients/client-kinesis-video-media/runtimeConfig.shared.ts
index 46d6c7aa077c..7b53db0af793 100644
--- a/clients/client-kinesis-video-media/runtimeConfig.shared.ts
+++ b/clients/client-kinesis-video-media/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { KinesisVideoMediaClientConfig } from "./KinesisVideoMediaClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KinesisVideoMediaClientConfig) => ({
+export const getRuntimeConfig = (config: KinesisVideoMediaClientConfig = {}) => ({
   apiVersion: "2017-09-30",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-kinesis-video-media/runtimeConfig.ts b/clients/client-kinesis-video-media/runtimeConfig.ts
index 0b7dce958c00..2990fb42784d 100644
--- a/clients/client-kinesis-video-media/runtimeConfig.ts
+++ b/clients/client-kinesis-video-media/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KinesisVideoMediaClientConfig) => {
+export const getRuntimeConfig = (config: KinesisVideoMediaClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-kinesis-video-signaling/runtimeConfig.browser.ts b/clients/client-kinesis-video-signaling/runtimeConfig.browser.ts
index d971cedee136..98963706c580 100644
--- a/clients/client-kinesis-video-signaling/runtimeConfig.browser.ts
+++ b/clients/client-kinesis-video-signaling/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KinesisVideoSignalingClientConfig) => {
+export const getRuntimeConfig = (config: KinesisVideoSignalingClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-kinesis-video-signaling/runtimeConfig.native.ts b/clients/client-kinesis-video-signaling/runtimeConfig.native.ts
index eb4303d1b422..375c68f8776a 100644
--- a/clients/client-kinesis-video-signaling/runtimeConfig.native.ts
+++ b/clients/client-kinesis-video-signaling/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KinesisVideoSignalingClientConfig) => {
+export const getRuntimeConfig = (config: KinesisVideoSignalingClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-kinesis-video-signaling/runtimeConfig.shared.ts b/clients/client-kinesis-video-signaling/runtimeConfig.shared.ts
index 2624a06a30ea..30e8cf3caea9 100644
--- a/clients/client-kinesis-video-signaling/runtimeConfig.shared.ts
+++ b/clients/client-kinesis-video-signaling/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { KinesisVideoSignalingClientConfig } from "./KinesisVideoSignalingClient
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KinesisVideoSignalingClientConfig) => ({
+export const getRuntimeConfig = (config: KinesisVideoSignalingClientConfig = {}) => ({
   apiVersion: "2019-12-04",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-kinesis-video-signaling/runtimeConfig.ts b/clients/client-kinesis-video-signaling/runtimeConfig.ts
index d1d7f0a6cc61..600b325c448c 100644
--- a/clients/client-kinesis-video-signaling/runtimeConfig.ts
+++ b/clients/client-kinesis-video-signaling/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KinesisVideoSignalingClientConfig) => {
+export const getRuntimeConfig = (config: KinesisVideoSignalingClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-kinesis-video/runtimeConfig.browser.ts b/clients/client-kinesis-video/runtimeConfig.browser.ts
index 09eb8597af36..b64f45735d69 100644
--- a/clients/client-kinesis-video/runtimeConfig.browser.ts
+++ b/clients/client-kinesis-video/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KinesisVideoClientConfig) => {
+export const getRuntimeConfig = (config: KinesisVideoClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-kinesis-video/runtimeConfig.native.ts b/clients/client-kinesis-video/runtimeConfig.native.ts
index 4d1c87ceb345..198b74469b87 100644
--- a/clients/client-kinesis-video/runtimeConfig.native.ts
+++ b/clients/client-kinesis-video/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KinesisVideoClientConfig) => {
+export const getRuntimeConfig = (config: KinesisVideoClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-kinesis-video/runtimeConfig.shared.ts b/clients/client-kinesis-video/runtimeConfig.shared.ts
index 066ff5635678..9bf8c9acae9e 100644
--- a/clients/client-kinesis-video/runtimeConfig.shared.ts
+++ b/clients/client-kinesis-video/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { KinesisVideoClientConfig } from "./KinesisVideoClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KinesisVideoClientConfig) => ({
+export const getRuntimeConfig = (config: KinesisVideoClientConfig = {}) => ({
   apiVersion: "2017-09-30",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-kinesis-video/runtimeConfig.ts b/clients/client-kinesis-video/runtimeConfig.ts
index c344f6e657ac..f7a84ddf1998 100644
--- a/clients/client-kinesis-video/runtimeConfig.ts
+++ b/clients/client-kinesis-video/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KinesisVideoClientConfig) => {
+export const getRuntimeConfig = (config: KinesisVideoClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-kinesis/runtimeConfig.browser.ts b/clients/client-kinesis/runtimeConfig.browser.ts
index b36398ee67a8..38d68f137c25 100644
--- a/clients/client-kinesis/runtimeConfig.browser.ts
+++ b/clients/client-kinesis/runtimeConfig.browser.ts
@@ -15,7 +15,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KinesisClientConfig) => {
+export const getRuntimeConfig = (config: KinesisClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-kinesis/runtimeConfig.native.ts b/clients/client-kinesis/runtimeConfig.native.ts
index ec82e232a1c6..00b0ae398902 100644
--- a/clients/client-kinesis/runtimeConfig.native.ts
+++ b/clients/client-kinesis/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KinesisClientConfig) => {
+export const getRuntimeConfig = (config: KinesisClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-kinesis/runtimeConfig.shared.ts b/clients/client-kinesis/runtimeConfig.shared.ts
index 1c87d24ceb37..663ec05c0119 100644
--- a/clients/client-kinesis/runtimeConfig.shared.ts
+++ b/clients/client-kinesis/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { KinesisClientConfig } from "./KinesisClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KinesisClientConfig) => ({
+export const getRuntimeConfig = (config: KinesisClientConfig = {}) => ({
   apiVersion: "2013-12-02",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-kinesis/runtimeConfig.ts b/clients/client-kinesis/runtimeConfig.ts
index 9b0fa80fe2d1..de1a0f2d93a1 100644
--- a/clients/client-kinesis/runtimeConfig.ts
+++ b/clients/client-kinesis/runtimeConfig.ts
@@ -18,7 +18,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KinesisClientConfig) => {
+export const getRuntimeConfig = (config: KinesisClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-kms/runtimeConfig.browser.ts b/clients/client-kms/runtimeConfig.browser.ts
index 013b4271902e..f53cc0e33c14 100644
--- a/clients/client-kms/runtimeConfig.browser.ts
+++ b/clients/client-kms/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KMSClientConfig) => {
+export const getRuntimeConfig = (config: KMSClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-kms/runtimeConfig.native.ts b/clients/client-kms/runtimeConfig.native.ts
index 09025cc4b6b7..f67a722d6d50 100644
--- a/clients/client-kms/runtimeConfig.native.ts
+++ b/clients/client-kms/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KMSClientConfig) => {
+export const getRuntimeConfig = (config: KMSClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-kms/runtimeConfig.shared.ts b/clients/client-kms/runtimeConfig.shared.ts
index c151af1a1b14..4f5bea43b586 100644
--- a/clients/client-kms/runtimeConfig.shared.ts
+++ b/clients/client-kms/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { KMSClientConfig } from "./KMSClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KMSClientConfig) => ({
+export const getRuntimeConfig = (config: KMSClientConfig = {}) => ({
   apiVersion: "2014-11-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-kms/runtimeConfig.ts b/clients/client-kms/runtimeConfig.ts
index e8d4c951052e..4cb6e469f73f 100644
--- a/clients/client-kms/runtimeConfig.ts
+++ b/clients/client-kms/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: KMSClientConfig) => {
+export const getRuntimeConfig = (config: KMSClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-lakeformation/runtimeConfig.browser.ts b/clients/client-lakeformation/runtimeConfig.browser.ts
index 8117f894d2ce..de43c36fe613 100644
--- a/clients/client-lakeformation/runtimeConfig.browser.ts
+++ b/clients/client-lakeformation/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LakeFormationClientConfig) => {
+export const getRuntimeConfig = (config: LakeFormationClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-lakeformation/runtimeConfig.native.ts b/clients/client-lakeformation/runtimeConfig.native.ts
index ee0c111f979d..721a447a1532 100644
--- a/clients/client-lakeformation/runtimeConfig.native.ts
+++ b/clients/client-lakeformation/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LakeFormationClientConfig) => {
+export const getRuntimeConfig = (config: LakeFormationClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-lakeformation/runtimeConfig.shared.ts b/clients/client-lakeformation/runtimeConfig.shared.ts
index 935ea38cb4a6..77526cc6ab3d 100644
--- a/clients/client-lakeformation/runtimeConfig.shared.ts
+++ b/clients/client-lakeformation/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { LakeFormationClientConfig } from "./LakeFormationClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LakeFormationClientConfig) => ({
+export const getRuntimeConfig = (config: LakeFormationClientConfig = {}) => ({
   apiVersion: "2017-03-31",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-lakeformation/runtimeConfig.ts b/clients/client-lakeformation/runtimeConfig.ts
index dcabc19ca764..8e3d81f915a4 100644
--- a/clients/client-lakeformation/runtimeConfig.ts
+++ b/clients/client-lakeformation/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LakeFormationClientConfig) => {
+export const getRuntimeConfig = (config: LakeFormationClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-lambda/runtimeConfig.browser.ts b/clients/client-lambda/runtimeConfig.browser.ts
index bdddc7b9ca66..29f2da2e4398 100644
--- a/clients/client-lambda/runtimeConfig.browser.ts
+++ b/clients/client-lambda/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LambdaClientConfig) => {
+export const getRuntimeConfig = (config: LambdaClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-lambda/runtimeConfig.native.ts b/clients/client-lambda/runtimeConfig.native.ts
index 9a1d443b8f5f..3620ca5d36dc 100644
--- a/clients/client-lambda/runtimeConfig.native.ts
+++ b/clients/client-lambda/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LambdaClientConfig) => {
+export const getRuntimeConfig = (config: LambdaClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-lambda/runtimeConfig.shared.ts b/clients/client-lambda/runtimeConfig.shared.ts
index 63c56ec86933..c09688b02ce2 100644
--- a/clients/client-lambda/runtimeConfig.shared.ts
+++ b/clients/client-lambda/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { LambdaClientConfig } from "./LambdaClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LambdaClientConfig) => ({
+export const getRuntimeConfig = (config: LambdaClientConfig = {}) => ({
   apiVersion: "2015-03-31",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-lambda/runtimeConfig.ts b/clients/client-lambda/runtimeConfig.ts
index 4a441ddd4d27..660f23546dd4 100644
--- a/clients/client-lambda/runtimeConfig.ts
+++ b/clients/client-lambda/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LambdaClientConfig) => {
+export const getRuntimeConfig = (config: LambdaClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-lex-model-building-service/runtimeConfig.browser.ts b/clients/client-lex-model-building-service/runtimeConfig.browser.ts
index a93051744aa0..0e8a28d8ed44 100644
--- a/clients/client-lex-model-building-service/runtimeConfig.browser.ts
+++ b/clients/client-lex-model-building-service/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LexModelBuildingServiceClientConfig) => {
+export const getRuntimeConfig = (config: LexModelBuildingServiceClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-lex-model-building-service/runtimeConfig.native.ts b/clients/client-lex-model-building-service/runtimeConfig.native.ts
index 782012a13f58..fb3217104be7 100644
--- a/clients/client-lex-model-building-service/runtimeConfig.native.ts
+++ b/clients/client-lex-model-building-service/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LexModelBuildingServiceClientConfig) => {
+export const getRuntimeConfig = (config: LexModelBuildingServiceClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-lex-model-building-service/runtimeConfig.shared.ts b/clients/client-lex-model-building-service/runtimeConfig.shared.ts
index 375e02df6627..4d522c444ea2 100644
--- a/clients/client-lex-model-building-service/runtimeConfig.shared.ts
+++ b/clients/client-lex-model-building-service/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { LexModelBuildingServiceClientConfig } from "./LexModelBuildingServiceCl
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LexModelBuildingServiceClientConfig) => ({
+export const getRuntimeConfig = (config: LexModelBuildingServiceClientConfig = {}) => ({
   apiVersion: "2017-04-19",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-lex-model-building-service/runtimeConfig.ts b/clients/client-lex-model-building-service/runtimeConfig.ts
index aab767216da7..a97255de39f8 100644
--- a/clients/client-lex-model-building-service/runtimeConfig.ts
+++ b/clients/client-lex-model-building-service/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LexModelBuildingServiceClientConfig) => {
+export const getRuntimeConfig = (config: LexModelBuildingServiceClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-lex-models-v2/runtimeConfig.browser.ts b/clients/client-lex-models-v2/runtimeConfig.browser.ts
index 7a7b9d773752..62070c4279e6 100644
--- a/clients/client-lex-models-v2/runtimeConfig.browser.ts
+++ b/clients/client-lex-models-v2/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LexModelsV2ClientConfig) => {
+export const getRuntimeConfig = (config: LexModelsV2ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-lex-models-v2/runtimeConfig.native.ts b/clients/client-lex-models-v2/runtimeConfig.native.ts
index 40c02fd41fb2..f9fe3748d5bd 100644
--- a/clients/client-lex-models-v2/runtimeConfig.native.ts
+++ b/clients/client-lex-models-v2/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LexModelsV2ClientConfig) => {
+export const getRuntimeConfig = (config: LexModelsV2ClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-lex-models-v2/runtimeConfig.shared.ts b/clients/client-lex-models-v2/runtimeConfig.shared.ts
index 40a3a1fd6576..a66f67fefdd3 100644
--- a/clients/client-lex-models-v2/runtimeConfig.shared.ts
+++ b/clients/client-lex-models-v2/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { LexModelsV2ClientConfig } from "./LexModelsV2Client";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LexModelsV2ClientConfig) => ({
+export const getRuntimeConfig = (config: LexModelsV2ClientConfig = {}) => ({
   apiVersion: "2020-08-07",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-lex-models-v2/runtimeConfig.ts b/clients/client-lex-models-v2/runtimeConfig.ts
index f2cbbe6d9d12..ff63e9b5b3df 100644
--- a/clients/client-lex-models-v2/runtimeConfig.ts
+++ b/clients/client-lex-models-v2/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LexModelsV2ClientConfig) => {
+export const getRuntimeConfig = (config: LexModelsV2ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-lex-runtime-service/runtimeConfig.browser.ts b/clients/client-lex-runtime-service/runtimeConfig.browser.ts
index 53deb97ce5fc..a3a4abe980ce 100644
--- a/clients/client-lex-runtime-service/runtimeConfig.browser.ts
+++ b/clients/client-lex-runtime-service/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LexRuntimeServiceClientConfig) => {
+export const getRuntimeConfig = (config: LexRuntimeServiceClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-lex-runtime-service/runtimeConfig.native.ts b/clients/client-lex-runtime-service/runtimeConfig.native.ts
index 42836d1de452..1d39cf671b2d 100644
--- a/clients/client-lex-runtime-service/runtimeConfig.native.ts
+++ b/clients/client-lex-runtime-service/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LexRuntimeServiceClientConfig) => {
+export const getRuntimeConfig = (config: LexRuntimeServiceClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-lex-runtime-service/runtimeConfig.shared.ts b/clients/client-lex-runtime-service/runtimeConfig.shared.ts
index 95d4cfecfdde..33061e0234ba 100644
--- a/clients/client-lex-runtime-service/runtimeConfig.shared.ts
+++ b/clients/client-lex-runtime-service/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { LexRuntimeServiceClientConfig } from "./LexRuntimeServiceClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LexRuntimeServiceClientConfig) => ({
+export const getRuntimeConfig = (config: LexRuntimeServiceClientConfig = {}) => ({
   apiVersion: "2016-11-28",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-lex-runtime-service/runtimeConfig.ts b/clients/client-lex-runtime-service/runtimeConfig.ts
index 5998674c0f9d..d3736e500c50 100644
--- a/clients/client-lex-runtime-service/runtimeConfig.ts
+++ b/clients/client-lex-runtime-service/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LexRuntimeServiceClientConfig) => {
+export const getRuntimeConfig = (config: LexRuntimeServiceClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-lex-runtime-v2/runtimeConfig.browser.ts b/clients/client-lex-runtime-v2/runtimeConfig.browser.ts
index 8740dc76753b..280503a006d4 100644
--- a/clients/client-lex-runtime-v2/runtimeConfig.browser.ts
+++ b/clients/client-lex-runtime-v2/runtimeConfig.browser.ts
@@ -15,7 +15,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LexRuntimeV2ClientConfig) => {
+export const getRuntimeConfig = (config: LexRuntimeV2ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-lex-runtime-v2/runtimeConfig.native.ts b/clients/client-lex-runtime-v2/runtimeConfig.native.ts
index 7759af6b6fb2..0a910bf7fe19 100644
--- a/clients/client-lex-runtime-v2/runtimeConfig.native.ts
+++ b/clients/client-lex-runtime-v2/runtimeConfig.native.ts
@@ -6,7 +6,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LexRuntimeV2ClientConfig) => {
+export const getRuntimeConfig = (config: LexRuntimeV2ClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-lex-runtime-v2/runtimeConfig.shared.ts b/clients/client-lex-runtime-v2/runtimeConfig.shared.ts
index 5f49afca340b..c82d995f3199 100644
--- a/clients/client-lex-runtime-v2/runtimeConfig.shared.ts
+++ b/clients/client-lex-runtime-v2/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { LexRuntimeV2ClientConfig } from "./LexRuntimeV2Client";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LexRuntimeV2ClientConfig) => ({
+export const getRuntimeConfig = (config: LexRuntimeV2ClientConfig = {}) => ({
   apiVersion: "2020-08-07",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-lex-runtime-v2/runtimeConfig.ts b/clients/client-lex-runtime-v2/runtimeConfig.ts
index e295fa3332f5..131fa938832f 100644
--- a/clients/client-lex-runtime-v2/runtimeConfig.ts
+++ b/clients/client-lex-runtime-v2/runtimeConfig.ts
@@ -19,7 +19,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LexRuntimeV2ClientConfig) => {
+export const getRuntimeConfig = (config: LexRuntimeV2ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-license-manager/runtimeConfig.browser.ts b/clients/client-license-manager/runtimeConfig.browser.ts
index 6763167e54ab..118ab4f2186a 100644
--- a/clients/client-license-manager/runtimeConfig.browser.ts
+++ b/clients/client-license-manager/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LicenseManagerClientConfig) => {
+export const getRuntimeConfig = (config: LicenseManagerClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-license-manager/runtimeConfig.native.ts b/clients/client-license-manager/runtimeConfig.native.ts
index acbb4326de39..589d28745c2e 100644
--- a/clients/client-license-manager/runtimeConfig.native.ts
+++ b/clients/client-license-manager/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LicenseManagerClientConfig) => {
+export const getRuntimeConfig = (config: LicenseManagerClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-license-manager/runtimeConfig.shared.ts b/clients/client-license-manager/runtimeConfig.shared.ts
index f58e465766d7..fc1072083b25 100644
--- a/clients/client-license-manager/runtimeConfig.shared.ts
+++ b/clients/client-license-manager/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { LicenseManagerClientConfig } from "./LicenseManagerClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LicenseManagerClientConfig) => ({
+export const getRuntimeConfig = (config: LicenseManagerClientConfig = {}) => ({
   apiVersion: "2018-08-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-license-manager/runtimeConfig.ts b/clients/client-license-manager/runtimeConfig.ts
index 3e15122a7bd2..edce4de15084 100644
--- a/clients/client-license-manager/runtimeConfig.ts
+++ b/clients/client-license-manager/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LicenseManagerClientConfig) => {
+export const getRuntimeConfig = (config: LicenseManagerClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-lightsail/runtimeConfig.browser.ts b/clients/client-lightsail/runtimeConfig.browser.ts
index 37dcab8839fa..b7dfa9bcf739 100644
--- a/clients/client-lightsail/runtimeConfig.browser.ts
+++ b/clients/client-lightsail/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LightsailClientConfig) => {
+export const getRuntimeConfig = (config: LightsailClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-lightsail/runtimeConfig.native.ts b/clients/client-lightsail/runtimeConfig.native.ts
index 96fbee9722f2..c38ca73d4aa0 100644
--- a/clients/client-lightsail/runtimeConfig.native.ts
+++ b/clients/client-lightsail/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LightsailClientConfig) => {
+export const getRuntimeConfig = (config: LightsailClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-lightsail/runtimeConfig.shared.ts b/clients/client-lightsail/runtimeConfig.shared.ts
index 5891055cb9ba..b91f672eec4e 100644
--- a/clients/client-lightsail/runtimeConfig.shared.ts
+++ b/clients/client-lightsail/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { LightsailClientConfig } from "./LightsailClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LightsailClientConfig) => ({
+export const getRuntimeConfig = (config: LightsailClientConfig = {}) => ({
   apiVersion: "2016-11-28",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-lightsail/runtimeConfig.ts b/clients/client-lightsail/runtimeConfig.ts
index 35fcfd8d5ce0..b6fe3e2e9409 100644
--- a/clients/client-lightsail/runtimeConfig.ts
+++ b/clients/client-lightsail/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LightsailClientConfig) => {
+export const getRuntimeConfig = (config: LightsailClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-location/runtimeConfig.browser.ts b/clients/client-location/runtimeConfig.browser.ts
index f0f11dc436a2..b73ae236d4fa 100644
--- a/clients/client-location/runtimeConfig.browser.ts
+++ b/clients/client-location/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LocationClientConfig) => {
+export const getRuntimeConfig = (config: LocationClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-location/runtimeConfig.native.ts b/clients/client-location/runtimeConfig.native.ts
index dc5e90f6305d..fb0660bb5914 100644
--- a/clients/client-location/runtimeConfig.native.ts
+++ b/clients/client-location/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LocationClientConfig) => {
+export const getRuntimeConfig = (config: LocationClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-location/runtimeConfig.shared.ts b/clients/client-location/runtimeConfig.shared.ts
index e1465543f59e..de449c04d8bc 100644
--- a/clients/client-location/runtimeConfig.shared.ts
+++ b/clients/client-location/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { LocationClientConfig } from "./LocationClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LocationClientConfig) => ({
+export const getRuntimeConfig = (config: LocationClientConfig = {}) => ({
   apiVersion: "2020-11-19",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-location/runtimeConfig.ts b/clients/client-location/runtimeConfig.ts
index 0e91bf395fcb..fb27532ae0bf 100644
--- a/clients/client-location/runtimeConfig.ts
+++ b/clients/client-location/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LocationClientConfig) => {
+export const getRuntimeConfig = (config: LocationClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-lookoutequipment/runtimeConfig.browser.ts b/clients/client-lookoutequipment/runtimeConfig.browser.ts
index 3bbbd3d6b076..80041d58f05c 100644
--- a/clients/client-lookoutequipment/runtimeConfig.browser.ts
+++ b/clients/client-lookoutequipment/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LookoutEquipmentClientConfig) => {
+export const getRuntimeConfig = (config: LookoutEquipmentClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-lookoutequipment/runtimeConfig.native.ts b/clients/client-lookoutequipment/runtimeConfig.native.ts
index e2d82f55e76e..799fdfd7a6d0 100644
--- a/clients/client-lookoutequipment/runtimeConfig.native.ts
+++ b/clients/client-lookoutequipment/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LookoutEquipmentClientConfig) => {
+export const getRuntimeConfig = (config: LookoutEquipmentClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-lookoutequipment/runtimeConfig.shared.ts b/clients/client-lookoutequipment/runtimeConfig.shared.ts
index 0150d461a461..ebdeb994335b 100644
--- a/clients/client-lookoutequipment/runtimeConfig.shared.ts
+++ b/clients/client-lookoutequipment/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { LookoutEquipmentClientConfig } from "./LookoutEquipmentClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LookoutEquipmentClientConfig) => ({
+export const getRuntimeConfig = (config: LookoutEquipmentClientConfig = {}) => ({
   apiVersion: "2020-12-15",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-lookoutequipment/runtimeConfig.ts b/clients/client-lookoutequipment/runtimeConfig.ts
index 4ad2507111d8..9cf5354b2bd8 100644
--- a/clients/client-lookoutequipment/runtimeConfig.ts
+++ b/clients/client-lookoutequipment/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LookoutEquipmentClientConfig) => {
+export const getRuntimeConfig = (config: LookoutEquipmentClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-lookoutmetrics/runtimeConfig.browser.ts b/clients/client-lookoutmetrics/runtimeConfig.browser.ts
index d08d93cee7cd..635d49def9bd 100644
--- a/clients/client-lookoutmetrics/runtimeConfig.browser.ts
+++ b/clients/client-lookoutmetrics/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LookoutMetricsClientConfig) => {
+export const getRuntimeConfig = (config: LookoutMetricsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-lookoutmetrics/runtimeConfig.native.ts b/clients/client-lookoutmetrics/runtimeConfig.native.ts
index 69623a0fc2c6..7431118e3516 100644
--- a/clients/client-lookoutmetrics/runtimeConfig.native.ts
+++ b/clients/client-lookoutmetrics/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LookoutMetricsClientConfig) => {
+export const getRuntimeConfig = (config: LookoutMetricsClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-lookoutmetrics/runtimeConfig.shared.ts b/clients/client-lookoutmetrics/runtimeConfig.shared.ts
index 69eb25ecbce1..822e44f12387 100644
--- a/clients/client-lookoutmetrics/runtimeConfig.shared.ts
+++ b/clients/client-lookoutmetrics/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { LookoutMetricsClientConfig } from "./LookoutMetricsClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LookoutMetricsClientConfig) => ({
+export const getRuntimeConfig = (config: LookoutMetricsClientConfig = {}) => ({
   apiVersion: "2017-07-25",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-lookoutmetrics/runtimeConfig.ts b/clients/client-lookoutmetrics/runtimeConfig.ts
index 4ba43e40be55..49c06506b3a3 100644
--- a/clients/client-lookoutmetrics/runtimeConfig.ts
+++ b/clients/client-lookoutmetrics/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LookoutMetricsClientConfig) => {
+export const getRuntimeConfig = (config: LookoutMetricsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-lookoutvision/runtimeConfig.browser.ts b/clients/client-lookoutvision/runtimeConfig.browser.ts
index 189c12bae491..9b1204005cb9 100644
--- a/clients/client-lookoutvision/runtimeConfig.browser.ts
+++ b/clients/client-lookoutvision/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LookoutVisionClientConfig) => {
+export const getRuntimeConfig = (config: LookoutVisionClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-lookoutvision/runtimeConfig.native.ts b/clients/client-lookoutvision/runtimeConfig.native.ts
index 21110b8630bf..4fe375f67534 100644
--- a/clients/client-lookoutvision/runtimeConfig.native.ts
+++ b/clients/client-lookoutvision/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LookoutVisionClientConfig) => {
+export const getRuntimeConfig = (config: LookoutVisionClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-lookoutvision/runtimeConfig.shared.ts b/clients/client-lookoutvision/runtimeConfig.shared.ts
index 2b92cd9bd350..0dcec438d45b 100644
--- a/clients/client-lookoutvision/runtimeConfig.shared.ts
+++ b/clients/client-lookoutvision/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { LookoutVisionClientConfig } from "./LookoutVisionClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LookoutVisionClientConfig) => ({
+export const getRuntimeConfig = (config: LookoutVisionClientConfig = {}) => ({
   apiVersion: "2020-11-20",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-lookoutvision/runtimeConfig.ts b/clients/client-lookoutvision/runtimeConfig.ts
index 977aedcee071..31b1eed8e32a 100644
--- a/clients/client-lookoutvision/runtimeConfig.ts
+++ b/clients/client-lookoutvision/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: LookoutVisionClientConfig) => {
+export const getRuntimeConfig = (config: LookoutVisionClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-machine-learning/runtimeConfig.browser.ts b/clients/client-machine-learning/runtimeConfig.browser.ts
index 6e32aca7c09e..e96eba3cc899 100644
--- a/clients/client-machine-learning/runtimeConfig.browser.ts
+++ b/clients/client-machine-learning/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MachineLearningClientConfig) => {
+export const getRuntimeConfig = (config: MachineLearningClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-machine-learning/runtimeConfig.native.ts b/clients/client-machine-learning/runtimeConfig.native.ts
index 6842d86b340a..886e6d1c9d26 100644
--- a/clients/client-machine-learning/runtimeConfig.native.ts
+++ b/clients/client-machine-learning/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MachineLearningClientConfig) => {
+export const getRuntimeConfig = (config: MachineLearningClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-machine-learning/runtimeConfig.shared.ts b/clients/client-machine-learning/runtimeConfig.shared.ts
index 5c7984e2685b..ead81f159063 100644
--- a/clients/client-machine-learning/runtimeConfig.shared.ts
+++ b/clients/client-machine-learning/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { MachineLearningClientConfig } from "./MachineLearningClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MachineLearningClientConfig) => ({
+export const getRuntimeConfig = (config: MachineLearningClientConfig = {}) => ({
   apiVersion: "2014-12-12",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-machine-learning/runtimeConfig.ts b/clients/client-machine-learning/runtimeConfig.ts
index 37e55ec0a929..c9c5e8fe474b 100644
--- a/clients/client-machine-learning/runtimeConfig.ts
+++ b/clients/client-machine-learning/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MachineLearningClientConfig) => {
+export const getRuntimeConfig = (config: MachineLearningClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-macie/runtimeConfig.browser.ts b/clients/client-macie/runtimeConfig.browser.ts
index ea5222a1a9c1..96d6fd3b738c 100644
--- a/clients/client-macie/runtimeConfig.browser.ts
+++ b/clients/client-macie/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MacieClientConfig) => {
+export const getRuntimeConfig = (config: MacieClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-macie/runtimeConfig.native.ts b/clients/client-macie/runtimeConfig.native.ts
index 9761cf41075f..9c4df02ac279 100644
--- a/clients/client-macie/runtimeConfig.native.ts
+++ b/clients/client-macie/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MacieClientConfig) => {
+export const getRuntimeConfig = (config: MacieClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-macie/runtimeConfig.shared.ts b/clients/client-macie/runtimeConfig.shared.ts
index cdfcde30d263..c8bb2f5a606e 100644
--- a/clients/client-macie/runtimeConfig.shared.ts
+++ b/clients/client-macie/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { MacieClientConfig } from "./MacieClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MacieClientConfig) => ({
+export const getRuntimeConfig = (config: MacieClientConfig = {}) => ({
   apiVersion: "2017-12-19",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-macie/runtimeConfig.ts b/clients/client-macie/runtimeConfig.ts
index 2d4531519f70..04cc963ce51f 100644
--- a/clients/client-macie/runtimeConfig.ts
+++ b/clients/client-macie/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MacieClientConfig) => {
+export const getRuntimeConfig = (config: MacieClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-macie2/runtimeConfig.browser.ts b/clients/client-macie2/runtimeConfig.browser.ts
index 79b12691291d..61be6d53ddf9 100644
--- a/clients/client-macie2/runtimeConfig.browser.ts
+++ b/clients/client-macie2/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: Macie2ClientConfig) => {
+export const getRuntimeConfig = (config: Macie2ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-macie2/runtimeConfig.native.ts b/clients/client-macie2/runtimeConfig.native.ts
index b4f8d93069ed..ee549158657e 100644
--- a/clients/client-macie2/runtimeConfig.native.ts
+++ b/clients/client-macie2/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: Macie2ClientConfig) => {
+export const getRuntimeConfig = (config: Macie2ClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-macie2/runtimeConfig.shared.ts b/clients/client-macie2/runtimeConfig.shared.ts
index 0d668c406a63..2e8c2e9a1023 100644
--- a/clients/client-macie2/runtimeConfig.shared.ts
+++ b/clients/client-macie2/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { Macie2ClientConfig } from "./Macie2Client";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: Macie2ClientConfig) => ({
+export const getRuntimeConfig = (config: Macie2ClientConfig = {}) => ({
   apiVersion: "2020-01-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-macie2/runtimeConfig.ts b/clients/client-macie2/runtimeConfig.ts
index ee87d5c61aaa..2adf81cdc1dc 100644
--- a/clients/client-macie2/runtimeConfig.ts
+++ b/clients/client-macie2/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: Macie2ClientConfig) => {
+export const getRuntimeConfig = (config: Macie2ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-managedblockchain/runtimeConfig.browser.ts b/clients/client-managedblockchain/runtimeConfig.browser.ts
index e0c98bff5e1f..bd29aeb9feda 100644
--- a/clients/client-managedblockchain/runtimeConfig.browser.ts
+++ b/clients/client-managedblockchain/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ManagedBlockchainClientConfig) => {
+export const getRuntimeConfig = (config: ManagedBlockchainClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-managedblockchain/runtimeConfig.native.ts b/clients/client-managedblockchain/runtimeConfig.native.ts
index 8158e30ac5a0..58546b89279c 100644
--- a/clients/client-managedblockchain/runtimeConfig.native.ts
+++ b/clients/client-managedblockchain/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ManagedBlockchainClientConfig) => {
+export const getRuntimeConfig = (config: ManagedBlockchainClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-managedblockchain/runtimeConfig.shared.ts b/clients/client-managedblockchain/runtimeConfig.shared.ts
index eaa5d25fbd36..7c7778520d8c 100644
--- a/clients/client-managedblockchain/runtimeConfig.shared.ts
+++ b/clients/client-managedblockchain/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ManagedBlockchainClientConfig } from "./ManagedBlockchainClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ManagedBlockchainClientConfig) => ({
+export const getRuntimeConfig = (config: ManagedBlockchainClientConfig = {}) => ({
   apiVersion: "2018-09-24",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-managedblockchain/runtimeConfig.ts b/clients/client-managedblockchain/runtimeConfig.ts
index 6d19c044e279..16a28657c91f 100644
--- a/clients/client-managedblockchain/runtimeConfig.ts
+++ b/clients/client-managedblockchain/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ManagedBlockchainClientConfig) => {
+export const getRuntimeConfig = (config: ManagedBlockchainClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-marketplace-catalog/runtimeConfig.browser.ts b/clients/client-marketplace-catalog/runtimeConfig.browser.ts
index 0bcb2b943157..41c3d8a82246 100644
--- a/clients/client-marketplace-catalog/runtimeConfig.browser.ts
+++ b/clients/client-marketplace-catalog/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MarketplaceCatalogClientConfig) => {
+export const getRuntimeConfig = (config: MarketplaceCatalogClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-marketplace-catalog/runtimeConfig.native.ts b/clients/client-marketplace-catalog/runtimeConfig.native.ts
index 5ea89c06b7ff..0538a867b80d 100644
--- a/clients/client-marketplace-catalog/runtimeConfig.native.ts
+++ b/clients/client-marketplace-catalog/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MarketplaceCatalogClientConfig) => {
+export const getRuntimeConfig = (config: MarketplaceCatalogClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-marketplace-catalog/runtimeConfig.shared.ts b/clients/client-marketplace-catalog/runtimeConfig.shared.ts
index 2ea07c1177d6..0a190b737053 100644
--- a/clients/client-marketplace-catalog/runtimeConfig.shared.ts
+++ b/clients/client-marketplace-catalog/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { MarketplaceCatalogClientConfig } from "./MarketplaceCatalogClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MarketplaceCatalogClientConfig) => ({
+export const getRuntimeConfig = (config: MarketplaceCatalogClientConfig = {}) => ({
   apiVersion: "2018-09-17",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-marketplace-catalog/runtimeConfig.ts b/clients/client-marketplace-catalog/runtimeConfig.ts
index 1ead06a0bc93..a5a312c6b267 100644
--- a/clients/client-marketplace-catalog/runtimeConfig.ts
+++ b/clients/client-marketplace-catalog/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MarketplaceCatalogClientConfig) => {
+export const getRuntimeConfig = (config: MarketplaceCatalogClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-marketplace-commerce-analytics/runtimeConfig.browser.ts b/clients/client-marketplace-commerce-analytics/runtimeConfig.browser.ts
index a4d95a572634..b94fd9672e0a 100644
--- a/clients/client-marketplace-commerce-analytics/runtimeConfig.browser.ts
+++ b/clients/client-marketplace-commerce-analytics/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MarketplaceCommerceAnalyticsClientConfig) => {
+export const getRuntimeConfig = (config: MarketplaceCommerceAnalyticsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-marketplace-commerce-analytics/runtimeConfig.native.ts b/clients/client-marketplace-commerce-analytics/runtimeConfig.native.ts
index 9624ca81b950..b8f9566124ed 100644
--- a/clients/client-marketplace-commerce-analytics/runtimeConfig.native.ts
+++ b/clients/client-marketplace-commerce-analytics/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MarketplaceCommerceAnalyticsClientConfig) => {
+export const getRuntimeConfig = (config: MarketplaceCommerceAnalyticsClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-marketplace-commerce-analytics/runtimeConfig.shared.ts b/clients/client-marketplace-commerce-analytics/runtimeConfig.shared.ts
index 063c145fc639..f9296e69c09c 100644
--- a/clients/client-marketplace-commerce-analytics/runtimeConfig.shared.ts
+++ b/clients/client-marketplace-commerce-analytics/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { MarketplaceCommerceAnalyticsClientConfig } from "./MarketplaceCommerceA
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MarketplaceCommerceAnalyticsClientConfig) => ({
+export const getRuntimeConfig = (config: MarketplaceCommerceAnalyticsClientConfig = {}) => ({
   apiVersion: "2015-07-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-marketplace-commerce-analytics/runtimeConfig.ts b/clients/client-marketplace-commerce-analytics/runtimeConfig.ts
index 8ba61381f1b6..3b6b2963789a 100644
--- a/clients/client-marketplace-commerce-analytics/runtimeConfig.ts
+++ b/clients/client-marketplace-commerce-analytics/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MarketplaceCommerceAnalyticsClientConfig) => {
+export const getRuntimeConfig = (config: MarketplaceCommerceAnalyticsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-marketplace-entitlement-service/runtimeConfig.browser.ts b/clients/client-marketplace-entitlement-service/runtimeConfig.browser.ts
index 84ae854d1b0b..8314a585958e 100644
--- a/clients/client-marketplace-entitlement-service/runtimeConfig.browser.ts
+++ b/clients/client-marketplace-entitlement-service/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MarketplaceEntitlementServiceClientConfig) => {
+export const getRuntimeConfig = (config: MarketplaceEntitlementServiceClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-marketplace-entitlement-service/runtimeConfig.native.ts b/clients/client-marketplace-entitlement-service/runtimeConfig.native.ts
index 17515cbe98c7..e57e24d0c975 100644
--- a/clients/client-marketplace-entitlement-service/runtimeConfig.native.ts
+++ b/clients/client-marketplace-entitlement-service/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MarketplaceEntitlementServiceClientConfig) => {
+export const getRuntimeConfig = (config: MarketplaceEntitlementServiceClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-marketplace-entitlement-service/runtimeConfig.shared.ts b/clients/client-marketplace-entitlement-service/runtimeConfig.shared.ts
index 7d12cdb07b53..66d7f789d17d 100644
--- a/clients/client-marketplace-entitlement-service/runtimeConfig.shared.ts
+++ b/clients/client-marketplace-entitlement-service/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { MarketplaceEntitlementServiceClientConfig } from "./MarketplaceEntitlem
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MarketplaceEntitlementServiceClientConfig) => ({
+export const getRuntimeConfig = (config: MarketplaceEntitlementServiceClientConfig = {}) => ({
   apiVersion: "2017-01-11",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-marketplace-entitlement-service/runtimeConfig.ts b/clients/client-marketplace-entitlement-service/runtimeConfig.ts
index 9ed6fadb656c..5f00632189e2 100644
--- a/clients/client-marketplace-entitlement-service/runtimeConfig.ts
+++ b/clients/client-marketplace-entitlement-service/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MarketplaceEntitlementServiceClientConfig) => {
+export const getRuntimeConfig = (config: MarketplaceEntitlementServiceClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-marketplace-metering/runtimeConfig.browser.ts b/clients/client-marketplace-metering/runtimeConfig.browser.ts
index 39c81273d988..282c4cdccfd9 100644
--- a/clients/client-marketplace-metering/runtimeConfig.browser.ts
+++ b/clients/client-marketplace-metering/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MarketplaceMeteringClientConfig) => {
+export const getRuntimeConfig = (config: MarketplaceMeteringClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-marketplace-metering/runtimeConfig.native.ts b/clients/client-marketplace-metering/runtimeConfig.native.ts
index 8b8292bc9850..cfd6d5a85148 100644
--- a/clients/client-marketplace-metering/runtimeConfig.native.ts
+++ b/clients/client-marketplace-metering/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MarketplaceMeteringClientConfig) => {
+export const getRuntimeConfig = (config: MarketplaceMeteringClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-marketplace-metering/runtimeConfig.shared.ts b/clients/client-marketplace-metering/runtimeConfig.shared.ts
index 259ea3e789a7..112c6e42c166 100644
--- a/clients/client-marketplace-metering/runtimeConfig.shared.ts
+++ b/clients/client-marketplace-metering/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { MarketplaceMeteringClientConfig } from "./MarketplaceMeteringClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MarketplaceMeteringClientConfig) => ({
+export const getRuntimeConfig = (config: MarketplaceMeteringClientConfig = {}) => ({
   apiVersion: "2016-01-14",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-marketplace-metering/runtimeConfig.ts b/clients/client-marketplace-metering/runtimeConfig.ts
index 53e3784f9dfc..077a3b9d370c 100644
--- a/clients/client-marketplace-metering/runtimeConfig.ts
+++ b/clients/client-marketplace-metering/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MarketplaceMeteringClientConfig) => {
+export const getRuntimeConfig = (config: MarketplaceMeteringClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-mediaconnect/runtimeConfig.browser.ts b/clients/client-mediaconnect/runtimeConfig.browser.ts
index 19402b6da068..1b59e44102b7 100644
--- a/clients/client-mediaconnect/runtimeConfig.browser.ts
+++ b/clients/client-mediaconnect/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaConnectClientConfig) => {
+export const getRuntimeConfig = (config: MediaConnectClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-mediaconnect/runtimeConfig.native.ts b/clients/client-mediaconnect/runtimeConfig.native.ts
index 44cee921ec25..b127e1c2cd06 100644
--- a/clients/client-mediaconnect/runtimeConfig.native.ts
+++ b/clients/client-mediaconnect/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaConnectClientConfig) => {
+export const getRuntimeConfig = (config: MediaConnectClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-mediaconnect/runtimeConfig.shared.ts b/clients/client-mediaconnect/runtimeConfig.shared.ts
index 8cecb4ab28ac..659d25acccb1 100644
--- a/clients/client-mediaconnect/runtimeConfig.shared.ts
+++ b/clients/client-mediaconnect/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { MediaConnectClientConfig } from "./MediaConnectClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaConnectClientConfig) => ({
+export const getRuntimeConfig = (config: MediaConnectClientConfig = {}) => ({
   apiVersion: "2018-11-14",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-mediaconnect/runtimeConfig.ts b/clients/client-mediaconnect/runtimeConfig.ts
index 85502d8a7df7..fba658fe7d40 100644
--- a/clients/client-mediaconnect/runtimeConfig.ts
+++ b/clients/client-mediaconnect/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaConnectClientConfig) => {
+export const getRuntimeConfig = (config: MediaConnectClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-mediaconvert/runtimeConfig.browser.ts b/clients/client-mediaconvert/runtimeConfig.browser.ts
index 107cf3c18f75..65bd4b94a848 100644
--- a/clients/client-mediaconvert/runtimeConfig.browser.ts
+++ b/clients/client-mediaconvert/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaConvertClientConfig) => {
+export const getRuntimeConfig = (config: MediaConvertClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-mediaconvert/runtimeConfig.native.ts b/clients/client-mediaconvert/runtimeConfig.native.ts
index 6a0ca580eb7d..e8115dc3fd68 100644
--- a/clients/client-mediaconvert/runtimeConfig.native.ts
+++ b/clients/client-mediaconvert/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaConvertClientConfig) => {
+export const getRuntimeConfig = (config: MediaConvertClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-mediaconvert/runtimeConfig.shared.ts b/clients/client-mediaconvert/runtimeConfig.shared.ts
index 4e0273b13b51..41b8346e4218 100644
--- a/clients/client-mediaconvert/runtimeConfig.shared.ts
+++ b/clients/client-mediaconvert/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { MediaConvertClientConfig } from "./MediaConvertClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaConvertClientConfig) => ({
+export const getRuntimeConfig = (config: MediaConvertClientConfig = {}) => ({
   apiVersion: "2017-08-29",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-mediaconvert/runtimeConfig.ts b/clients/client-mediaconvert/runtimeConfig.ts
index cf508455f0d2..74eef2a902e1 100644
--- a/clients/client-mediaconvert/runtimeConfig.ts
+++ b/clients/client-mediaconvert/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaConvertClientConfig) => {
+export const getRuntimeConfig = (config: MediaConvertClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-medialive/runtimeConfig.browser.ts b/clients/client-medialive/runtimeConfig.browser.ts
index 151492f6b302..fa491b0d9628 100644
--- a/clients/client-medialive/runtimeConfig.browser.ts
+++ b/clients/client-medialive/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaLiveClientConfig) => {
+export const getRuntimeConfig = (config: MediaLiveClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-medialive/runtimeConfig.native.ts b/clients/client-medialive/runtimeConfig.native.ts
index ed3797f0668e..caf6676b866c 100644
--- a/clients/client-medialive/runtimeConfig.native.ts
+++ b/clients/client-medialive/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaLiveClientConfig) => {
+export const getRuntimeConfig = (config: MediaLiveClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-medialive/runtimeConfig.shared.ts b/clients/client-medialive/runtimeConfig.shared.ts
index 9135f59d2cba..5ead13ea3797 100644
--- a/clients/client-medialive/runtimeConfig.shared.ts
+++ b/clients/client-medialive/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { MediaLiveClientConfig } from "./MediaLiveClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaLiveClientConfig) => ({
+export const getRuntimeConfig = (config: MediaLiveClientConfig = {}) => ({
   apiVersion: "2017-10-14",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-medialive/runtimeConfig.ts b/clients/client-medialive/runtimeConfig.ts
index 8f88dc21bf6a..9029bad07201 100644
--- a/clients/client-medialive/runtimeConfig.ts
+++ b/clients/client-medialive/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaLiveClientConfig) => {
+export const getRuntimeConfig = (config: MediaLiveClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-mediapackage-vod/runtimeConfig.browser.ts b/clients/client-mediapackage-vod/runtimeConfig.browser.ts
index 9997c3031359..08b21f7ef57f 100644
--- a/clients/client-mediapackage-vod/runtimeConfig.browser.ts
+++ b/clients/client-mediapackage-vod/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaPackageVodClientConfig) => {
+export const getRuntimeConfig = (config: MediaPackageVodClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-mediapackage-vod/runtimeConfig.native.ts b/clients/client-mediapackage-vod/runtimeConfig.native.ts
index 490b2d171e36..29afac872b79 100644
--- a/clients/client-mediapackage-vod/runtimeConfig.native.ts
+++ b/clients/client-mediapackage-vod/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaPackageVodClientConfig) => {
+export const getRuntimeConfig = (config: MediaPackageVodClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-mediapackage-vod/runtimeConfig.shared.ts b/clients/client-mediapackage-vod/runtimeConfig.shared.ts
index 4a0a7d0f0202..12bd153bc581 100644
--- a/clients/client-mediapackage-vod/runtimeConfig.shared.ts
+++ b/clients/client-mediapackage-vod/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { MediaPackageVodClientConfig } from "./MediaPackageVodClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaPackageVodClientConfig) => ({
+export const getRuntimeConfig = (config: MediaPackageVodClientConfig = {}) => ({
   apiVersion: "2018-11-07",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-mediapackage-vod/runtimeConfig.ts b/clients/client-mediapackage-vod/runtimeConfig.ts
index a604f995de56..f6252d272260 100644
--- a/clients/client-mediapackage-vod/runtimeConfig.ts
+++ b/clients/client-mediapackage-vod/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaPackageVodClientConfig) => {
+export const getRuntimeConfig = (config: MediaPackageVodClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-mediapackage/runtimeConfig.browser.ts b/clients/client-mediapackage/runtimeConfig.browser.ts
index 61666e1594aa..12bca539b26d 100644
--- a/clients/client-mediapackage/runtimeConfig.browser.ts
+++ b/clients/client-mediapackage/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaPackageClientConfig) => {
+export const getRuntimeConfig = (config: MediaPackageClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-mediapackage/runtimeConfig.native.ts b/clients/client-mediapackage/runtimeConfig.native.ts
index 94a68712a298..9892035db037 100644
--- a/clients/client-mediapackage/runtimeConfig.native.ts
+++ b/clients/client-mediapackage/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaPackageClientConfig) => {
+export const getRuntimeConfig = (config: MediaPackageClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-mediapackage/runtimeConfig.shared.ts b/clients/client-mediapackage/runtimeConfig.shared.ts
index 458c7ed64426..5d5f37864396 100644
--- a/clients/client-mediapackage/runtimeConfig.shared.ts
+++ b/clients/client-mediapackage/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { MediaPackageClientConfig } from "./MediaPackageClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaPackageClientConfig) => ({
+export const getRuntimeConfig = (config: MediaPackageClientConfig = {}) => ({
   apiVersion: "2017-10-12",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-mediapackage/runtimeConfig.ts b/clients/client-mediapackage/runtimeConfig.ts
index f09912607eeb..bf4901c2cee6 100644
--- a/clients/client-mediapackage/runtimeConfig.ts
+++ b/clients/client-mediapackage/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaPackageClientConfig) => {
+export const getRuntimeConfig = (config: MediaPackageClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-mediastore-data/runtimeConfig.browser.ts b/clients/client-mediastore-data/runtimeConfig.browser.ts
index ed1b7db9f593..f9c50194714e 100644
--- a/clients/client-mediastore-data/runtimeConfig.browser.ts
+++ b/clients/client-mediastore-data/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaStoreDataClientConfig) => {
+export const getRuntimeConfig = (config: MediaStoreDataClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-mediastore-data/runtimeConfig.native.ts b/clients/client-mediastore-data/runtimeConfig.native.ts
index 2bf097d28c53..cf0abdec0861 100644
--- a/clients/client-mediastore-data/runtimeConfig.native.ts
+++ b/clients/client-mediastore-data/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaStoreDataClientConfig) => {
+export const getRuntimeConfig = (config: MediaStoreDataClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-mediastore-data/runtimeConfig.shared.ts b/clients/client-mediastore-data/runtimeConfig.shared.ts
index 9511d38fbdc7..c79795630ff6 100644
--- a/clients/client-mediastore-data/runtimeConfig.shared.ts
+++ b/clients/client-mediastore-data/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { MediaStoreDataClientConfig } from "./MediaStoreDataClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaStoreDataClientConfig) => ({
+export const getRuntimeConfig = (config: MediaStoreDataClientConfig = {}) => ({
   apiVersion: "2017-09-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-mediastore-data/runtimeConfig.ts b/clients/client-mediastore-data/runtimeConfig.ts
index 5507b7676a35..4fc8aeed092b 100644
--- a/clients/client-mediastore-data/runtimeConfig.ts
+++ b/clients/client-mediastore-data/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaStoreDataClientConfig) => {
+export const getRuntimeConfig = (config: MediaStoreDataClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-mediastore/runtimeConfig.browser.ts b/clients/client-mediastore/runtimeConfig.browser.ts
index 558513a13441..d6eed97be8af 100644
--- a/clients/client-mediastore/runtimeConfig.browser.ts
+++ b/clients/client-mediastore/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaStoreClientConfig) => {
+export const getRuntimeConfig = (config: MediaStoreClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-mediastore/runtimeConfig.native.ts b/clients/client-mediastore/runtimeConfig.native.ts
index 625cca134c51..cb32e65c9a06 100644
--- a/clients/client-mediastore/runtimeConfig.native.ts
+++ b/clients/client-mediastore/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaStoreClientConfig) => {
+export const getRuntimeConfig = (config: MediaStoreClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-mediastore/runtimeConfig.shared.ts b/clients/client-mediastore/runtimeConfig.shared.ts
index e7fb05c9eaf7..a7e721170e4b 100644
--- a/clients/client-mediastore/runtimeConfig.shared.ts
+++ b/clients/client-mediastore/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { MediaStoreClientConfig } from "./MediaStoreClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaStoreClientConfig) => ({
+export const getRuntimeConfig = (config: MediaStoreClientConfig = {}) => ({
   apiVersion: "2017-09-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-mediastore/runtimeConfig.ts b/clients/client-mediastore/runtimeConfig.ts
index 4456eb58d932..8db87230e47d 100644
--- a/clients/client-mediastore/runtimeConfig.ts
+++ b/clients/client-mediastore/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaStoreClientConfig) => {
+export const getRuntimeConfig = (config: MediaStoreClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-mediatailor/runtimeConfig.browser.ts b/clients/client-mediatailor/runtimeConfig.browser.ts
index 61a02ef6e9bd..0986c00d78b1 100644
--- a/clients/client-mediatailor/runtimeConfig.browser.ts
+++ b/clients/client-mediatailor/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaTailorClientConfig) => {
+export const getRuntimeConfig = (config: MediaTailorClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-mediatailor/runtimeConfig.native.ts b/clients/client-mediatailor/runtimeConfig.native.ts
index e905f01da136..1be651c259eb 100644
--- a/clients/client-mediatailor/runtimeConfig.native.ts
+++ b/clients/client-mediatailor/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaTailorClientConfig) => {
+export const getRuntimeConfig = (config: MediaTailorClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-mediatailor/runtimeConfig.shared.ts b/clients/client-mediatailor/runtimeConfig.shared.ts
index 29adcafc4a74..394b472c19a7 100644
--- a/clients/client-mediatailor/runtimeConfig.shared.ts
+++ b/clients/client-mediatailor/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { MediaTailorClientConfig } from "./MediaTailorClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaTailorClientConfig) => ({
+export const getRuntimeConfig = (config: MediaTailorClientConfig = {}) => ({
   apiVersion: "2018-04-23",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-mediatailor/runtimeConfig.ts b/clients/client-mediatailor/runtimeConfig.ts
index 32c22c1102d4..5ec04b9e3db1 100644
--- a/clients/client-mediatailor/runtimeConfig.ts
+++ b/clients/client-mediatailor/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MediaTailorClientConfig) => {
+export const getRuntimeConfig = (config: MediaTailorClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-mgn/runtimeConfig.browser.ts b/clients/client-mgn/runtimeConfig.browser.ts
index 1921effa74ad..7c32b19720e3 100644
--- a/clients/client-mgn/runtimeConfig.browser.ts
+++ b/clients/client-mgn/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MgnClientConfig) => {
+export const getRuntimeConfig = (config: MgnClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-mgn/runtimeConfig.native.ts b/clients/client-mgn/runtimeConfig.native.ts
index d9a33dfdd418..ad063b4a69c6 100644
--- a/clients/client-mgn/runtimeConfig.native.ts
+++ b/clients/client-mgn/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MgnClientConfig) => {
+export const getRuntimeConfig = (config: MgnClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-mgn/runtimeConfig.shared.ts b/clients/client-mgn/runtimeConfig.shared.ts
index adcec5ac4db0..e894ccd04adf 100644
--- a/clients/client-mgn/runtimeConfig.shared.ts
+++ b/clients/client-mgn/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { MgnClientConfig } from "./MgnClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MgnClientConfig) => ({
+export const getRuntimeConfig = (config: MgnClientConfig = {}) => ({
   apiVersion: "2020-02-26",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-mgn/runtimeConfig.ts b/clients/client-mgn/runtimeConfig.ts
index 040761f9e4bd..d8a0595b21bb 100644
--- a/clients/client-mgn/runtimeConfig.ts
+++ b/clients/client-mgn/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MgnClientConfig) => {
+export const getRuntimeConfig = (config: MgnClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-migration-hub/runtimeConfig.browser.ts b/clients/client-migration-hub/runtimeConfig.browser.ts
index 835fbcbd717e..b6aaba2aed74 100644
--- a/clients/client-migration-hub/runtimeConfig.browser.ts
+++ b/clients/client-migration-hub/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MigrationHubClientConfig) => {
+export const getRuntimeConfig = (config: MigrationHubClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-migration-hub/runtimeConfig.native.ts b/clients/client-migration-hub/runtimeConfig.native.ts
index 534225442de1..08a3042e9850 100644
--- a/clients/client-migration-hub/runtimeConfig.native.ts
+++ b/clients/client-migration-hub/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MigrationHubClientConfig) => {
+export const getRuntimeConfig = (config: MigrationHubClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-migration-hub/runtimeConfig.shared.ts b/clients/client-migration-hub/runtimeConfig.shared.ts
index 33d7600f6eaf..ed09d241e9a2 100644
--- a/clients/client-migration-hub/runtimeConfig.shared.ts
+++ b/clients/client-migration-hub/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { MigrationHubClientConfig } from "./MigrationHubClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MigrationHubClientConfig) => ({
+export const getRuntimeConfig = (config: MigrationHubClientConfig = {}) => ({
   apiVersion: "2017-05-31",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-migration-hub/runtimeConfig.ts b/clients/client-migration-hub/runtimeConfig.ts
index 082480789a99..91be868ccaeb 100644
--- a/clients/client-migration-hub/runtimeConfig.ts
+++ b/clients/client-migration-hub/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MigrationHubClientConfig) => {
+export const getRuntimeConfig = (config: MigrationHubClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-migrationhub-config/runtimeConfig.browser.ts b/clients/client-migrationhub-config/runtimeConfig.browser.ts
index e8c24b1b5d89..fefa54a03ddf 100644
--- a/clients/client-migrationhub-config/runtimeConfig.browser.ts
+++ b/clients/client-migrationhub-config/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MigrationHubConfigClientConfig) => {
+export const getRuntimeConfig = (config: MigrationHubConfigClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-migrationhub-config/runtimeConfig.native.ts b/clients/client-migrationhub-config/runtimeConfig.native.ts
index 0e0edc48a431..d3d7525f82ea 100644
--- a/clients/client-migrationhub-config/runtimeConfig.native.ts
+++ b/clients/client-migrationhub-config/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MigrationHubConfigClientConfig) => {
+export const getRuntimeConfig = (config: MigrationHubConfigClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-migrationhub-config/runtimeConfig.shared.ts b/clients/client-migrationhub-config/runtimeConfig.shared.ts
index 99e7cc3ed331..c822477c2ff5 100644
--- a/clients/client-migrationhub-config/runtimeConfig.shared.ts
+++ b/clients/client-migrationhub-config/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { MigrationHubConfigClientConfig } from "./MigrationHubConfigClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MigrationHubConfigClientConfig) => ({
+export const getRuntimeConfig = (config: MigrationHubConfigClientConfig = {}) => ({
   apiVersion: "2019-06-30",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-migrationhub-config/runtimeConfig.ts b/clients/client-migrationhub-config/runtimeConfig.ts
index 2285946facc0..a44ac33ad9ae 100644
--- a/clients/client-migrationhub-config/runtimeConfig.ts
+++ b/clients/client-migrationhub-config/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MigrationHubConfigClientConfig) => {
+export const getRuntimeConfig = (config: MigrationHubConfigClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-mobile/runtimeConfig.browser.ts b/clients/client-mobile/runtimeConfig.browser.ts
index 281b5d2c10c4..ab53af15d4b8 100644
--- a/clients/client-mobile/runtimeConfig.browser.ts
+++ b/clients/client-mobile/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MobileClientConfig) => {
+export const getRuntimeConfig = (config: MobileClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-mobile/runtimeConfig.native.ts b/clients/client-mobile/runtimeConfig.native.ts
index 7b8cbccb335c..8ffba63f23bf 100644
--- a/clients/client-mobile/runtimeConfig.native.ts
+++ b/clients/client-mobile/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MobileClientConfig) => {
+export const getRuntimeConfig = (config: MobileClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-mobile/runtimeConfig.shared.ts b/clients/client-mobile/runtimeConfig.shared.ts
index c2fa7896ea0b..53637569ff7f 100644
--- a/clients/client-mobile/runtimeConfig.shared.ts
+++ b/clients/client-mobile/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { MobileClientConfig } from "./MobileClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MobileClientConfig) => ({
+export const getRuntimeConfig = (config: MobileClientConfig = {}) => ({
   apiVersion: "2017-07-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-mobile/runtimeConfig.ts b/clients/client-mobile/runtimeConfig.ts
index c7ccd8a84f43..b50803914fd0 100644
--- a/clients/client-mobile/runtimeConfig.ts
+++ b/clients/client-mobile/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MobileClientConfig) => {
+export const getRuntimeConfig = (config: MobileClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-mq/runtimeConfig.browser.ts b/clients/client-mq/runtimeConfig.browser.ts
index 640f70497094..e4ef3611db63 100644
--- a/clients/client-mq/runtimeConfig.browser.ts
+++ b/clients/client-mq/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MqClientConfig) => {
+export const getRuntimeConfig = (config: MqClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-mq/runtimeConfig.native.ts b/clients/client-mq/runtimeConfig.native.ts
index c073bd049201..a9ae9a93706e 100644
--- a/clients/client-mq/runtimeConfig.native.ts
+++ b/clients/client-mq/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MqClientConfig) => {
+export const getRuntimeConfig = (config: MqClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-mq/runtimeConfig.shared.ts b/clients/client-mq/runtimeConfig.shared.ts
index b6b3d86ac06a..2a36122e9d26 100644
--- a/clients/client-mq/runtimeConfig.shared.ts
+++ b/clients/client-mq/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { MqClientConfig } from "./MqClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MqClientConfig) => ({
+export const getRuntimeConfig = (config: MqClientConfig = {}) => ({
   apiVersion: "2017-11-27",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-mq/runtimeConfig.ts b/clients/client-mq/runtimeConfig.ts
index 07c8df455819..0c00897877a1 100644
--- a/clients/client-mq/runtimeConfig.ts
+++ b/clients/client-mq/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MqClientConfig) => {
+export const getRuntimeConfig = (config: MqClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-mturk/runtimeConfig.browser.ts b/clients/client-mturk/runtimeConfig.browser.ts
index 02327dfb9ac3..04092b3a5033 100644
--- a/clients/client-mturk/runtimeConfig.browser.ts
+++ b/clients/client-mturk/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MTurkClientConfig) => {
+export const getRuntimeConfig = (config: MTurkClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-mturk/runtimeConfig.native.ts b/clients/client-mturk/runtimeConfig.native.ts
index c2bf64607e5a..7a54ffd3620e 100644
--- a/clients/client-mturk/runtimeConfig.native.ts
+++ b/clients/client-mturk/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MTurkClientConfig) => {
+export const getRuntimeConfig = (config: MTurkClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-mturk/runtimeConfig.shared.ts b/clients/client-mturk/runtimeConfig.shared.ts
index 354d5b5996b5..09ca4e444889 100644
--- a/clients/client-mturk/runtimeConfig.shared.ts
+++ b/clients/client-mturk/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { MTurkClientConfig } from "./MTurkClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MTurkClientConfig) => ({
+export const getRuntimeConfig = (config: MTurkClientConfig = {}) => ({
   apiVersion: "2017-01-17",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-mturk/runtimeConfig.ts b/clients/client-mturk/runtimeConfig.ts
index c6e6c34b1f9f..3038a69e36ec 100644
--- a/clients/client-mturk/runtimeConfig.ts
+++ b/clients/client-mturk/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MTurkClientConfig) => {
+export const getRuntimeConfig = (config: MTurkClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-mwaa/runtimeConfig.browser.ts b/clients/client-mwaa/runtimeConfig.browser.ts
index b4b4a813be58..3d394b70f9a8 100644
--- a/clients/client-mwaa/runtimeConfig.browser.ts
+++ b/clients/client-mwaa/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MWAAClientConfig) => {
+export const getRuntimeConfig = (config: MWAAClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-mwaa/runtimeConfig.native.ts b/clients/client-mwaa/runtimeConfig.native.ts
index f41c59335acf..1867a4bce326 100644
--- a/clients/client-mwaa/runtimeConfig.native.ts
+++ b/clients/client-mwaa/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MWAAClientConfig) => {
+export const getRuntimeConfig = (config: MWAAClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-mwaa/runtimeConfig.shared.ts b/clients/client-mwaa/runtimeConfig.shared.ts
index ae4802e378d4..6729c92e62e3 100644
--- a/clients/client-mwaa/runtimeConfig.shared.ts
+++ b/clients/client-mwaa/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { MWAAClientConfig } from "./MWAAClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MWAAClientConfig) => ({
+export const getRuntimeConfig = (config: MWAAClientConfig = {}) => ({
   apiVersion: "2020-07-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-mwaa/runtimeConfig.ts b/clients/client-mwaa/runtimeConfig.ts
index 0f275cd30db4..9399eafd5781 100644
--- a/clients/client-mwaa/runtimeConfig.ts
+++ b/clients/client-mwaa/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: MWAAClientConfig) => {
+export const getRuntimeConfig = (config: MWAAClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-neptune/runtimeConfig.browser.ts b/clients/client-neptune/runtimeConfig.browser.ts
index 3b4611c71b7b..cf165ee270ad 100644
--- a/clients/client-neptune/runtimeConfig.browser.ts
+++ b/clients/client-neptune/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: NeptuneClientConfig) => {
+export const getRuntimeConfig = (config: NeptuneClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-neptune/runtimeConfig.native.ts b/clients/client-neptune/runtimeConfig.native.ts
index ffaa9958be08..109082bc7017 100644
--- a/clients/client-neptune/runtimeConfig.native.ts
+++ b/clients/client-neptune/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: NeptuneClientConfig) => {
+export const getRuntimeConfig = (config: NeptuneClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-neptune/runtimeConfig.shared.ts b/clients/client-neptune/runtimeConfig.shared.ts
index 2089db65bf85..49d1101d812e 100644
--- a/clients/client-neptune/runtimeConfig.shared.ts
+++ b/clients/client-neptune/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { NeptuneClientConfig } from "./NeptuneClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: NeptuneClientConfig) => ({
+export const getRuntimeConfig = (config: NeptuneClientConfig = {}) => ({
   apiVersion: "2014-10-31",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-neptune/runtimeConfig.ts b/clients/client-neptune/runtimeConfig.ts
index 73a338068500..4b471ed9cc15 100644
--- a/clients/client-neptune/runtimeConfig.ts
+++ b/clients/client-neptune/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: NeptuneClientConfig) => {
+export const getRuntimeConfig = (config: NeptuneClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-network-firewall/runtimeConfig.browser.ts b/clients/client-network-firewall/runtimeConfig.browser.ts
index 731fe5ea01d2..5caaeabd6d42 100644
--- a/clients/client-network-firewall/runtimeConfig.browser.ts
+++ b/clients/client-network-firewall/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: NetworkFirewallClientConfig) => {
+export const getRuntimeConfig = (config: NetworkFirewallClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-network-firewall/runtimeConfig.native.ts b/clients/client-network-firewall/runtimeConfig.native.ts
index 5eb62f50bade..052556eae094 100644
--- a/clients/client-network-firewall/runtimeConfig.native.ts
+++ b/clients/client-network-firewall/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: NetworkFirewallClientConfig) => {
+export const getRuntimeConfig = (config: NetworkFirewallClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-network-firewall/runtimeConfig.shared.ts b/clients/client-network-firewall/runtimeConfig.shared.ts
index 0872b41a1543..ceac60755983 100644
--- a/clients/client-network-firewall/runtimeConfig.shared.ts
+++ b/clients/client-network-firewall/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { NetworkFirewallClientConfig } from "./NetworkFirewallClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: NetworkFirewallClientConfig) => ({
+export const getRuntimeConfig = (config: NetworkFirewallClientConfig = {}) => ({
   apiVersion: "2020-11-12",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-network-firewall/runtimeConfig.ts b/clients/client-network-firewall/runtimeConfig.ts
index 97c73bca9368..103903b0bcdf 100644
--- a/clients/client-network-firewall/runtimeConfig.ts
+++ b/clients/client-network-firewall/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: NetworkFirewallClientConfig) => {
+export const getRuntimeConfig = (config: NetworkFirewallClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-networkmanager/runtimeConfig.browser.ts b/clients/client-networkmanager/runtimeConfig.browser.ts
index 6220eb0e58f4..20f3f0287207 100644
--- a/clients/client-networkmanager/runtimeConfig.browser.ts
+++ b/clients/client-networkmanager/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: NetworkManagerClientConfig) => {
+export const getRuntimeConfig = (config: NetworkManagerClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-networkmanager/runtimeConfig.native.ts b/clients/client-networkmanager/runtimeConfig.native.ts
index d3d5afd733ac..2420ab3a228c 100644
--- a/clients/client-networkmanager/runtimeConfig.native.ts
+++ b/clients/client-networkmanager/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: NetworkManagerClientConfig) => {
+export const getRuntimeConfig = (config: NetworkManagerClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-networkmanager/runtimeConfig.shared.ts b/clients/client-networkmanager/runtimeConfig.shared.ts
index dfeec1ecb789..457573ec6f02 100644
--- a/clients/client-networkmanager/runtimeConfig.shared.ts
+++ b/clients/client-networkmanager/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { NetworkManagerClientConfig } from "./NetworkManagerClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: NetworkManagerClientConfig) => ({
+export const getRuntimeConfig = (config: NetworkManagerClientConfig = {}) => ({
   apiVersion: "2019-07-05",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-networkmanager/runtimeConfig.ts b/clients/client-networkmanager/runtimeConfig.ts
index 2f9de3c71338..5fd4091bdb36 100644
--- a/clients/client-networkmanager/runtimeConfig.ts
+++ b/clients/client-networkmanager/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: NetworkManagerClientConfig) => {
+export const getRuntimeConfig = (config: NetworkManagerClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-nimble/runtimeConfig.browser.ts b/clients/client-nimble/runtimeConfig.browser.ts
index 20d31010fea9..2c85d33d7ce0 100644
--- a/clients/client-nimble/runtimeConfig.browser.ts
+++ b/clients/client-nimble/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: NimbleClientConfig) => {
+export const getRuntimeConfig = (config: NimbleClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-nimble/runtimeConfig.native.ts b/clients/client-nimble/runtimeConfig.native.ts
index 46f0102fb9d3..25fe76316e7e 100644
--- a/clients/client-nimble/runtimeConfig.native.ts
+++ b/clients/client-nimble/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: NimbleClientConfig) => {
+export const getRuntimeConfig = (config: NimbleClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-nimble/runtimeConfig.shared.ts b/clients/client-nimble/runtimeConfig.shared.ts
index 014bc7e31a80..92938e4ce67c 100644
--- a/clients/client-nimble/runtimeConfig.shared.ts
+++ b/clients/client-nimble/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { NimbleClientConfig } from "./NimbleClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: NimbleClientConfig) => ({
+export const getRuntimeConfig = (config: NimbleClientConfig = {}) => ({
   apiVersion: "2020-08-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-nimble/runtimeConfig.ts b/clients/client-nimble/runtimeConfig.ts
index d24fde95d29f..64aadd51f2ea 100644
--- a/clients/client-nimble/runtimeConfig.ts
+++ b/clients/client-nimble/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: NimbleClientConfig) => {
+export const getRuntimeConfig = (config: NimbleClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-opsworks/runtimeConfig.browser.ts b/clients/client-opsworks/runtimeConfig.browser.ts
index d7c4314b39d4..d2ba75231cdd 100644
--- a/clients/client-opsworks/runtimeConfig.browser.ts
+++ b/clients/client-opsworks/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: OpsWorksClientConfig) => {
+export const getRuntimeConfig = (config: OpsWorksClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-opsworks/runtimeConfig.native.ts b/clients/client-opsworks/runtimeConfig.native.ts
index b84b319fa24c..76883cc270bb 100644
--- a/clients/client-opsworks/runtimeConfig.native.ts
+++ b/clients/client-opsworks/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: OpsWorksClientConfig) => {
+export const getRuntimeConfig = (config: OpsWorksClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-opsworks/runtimeConfig.shared.ts b/clients/client-opsworks/runtimeConfig.shared.ts
index 4fabc99fb3d9..2aa7723fafe0 100644
--- a/clients/client-opsworks/runtimeConfig.shared.ts
+++ b/clients/client-opsworks/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { OpsWorksClientConfig } from "./OpsWorksClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: OpsWorksClientConfig) => ({
+export const getRuntimeConfig = (config: OpsWorksClientConfig = {}) => ({
   apiVersion: "2013-02-18",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-opsworks/runtimeConfig.ts b/clients/client-opsworks/runtimeConfig.ts
index 836460b070dc..327ff6b74fa0 100644
--- a/clients/client-opsworks/runtimeConfig.ts
+++ b/clients/client-opsworks/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: OpsWorksClientConfig) => {
+export const getRuntimeConfig = (config: OpsWorksClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-opsworkscm/runtimeConfig.browser.ts b/clients/client-opsworkscm/runtimeConfig.browser.ts
index e595c5e481e9..4ad4d3f4128d 100644
--- a/clients/client-opsworkscm/runtimeConfig.browser.ts
+++ b/clients/client-opsworkscm/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: OpsWorksCMClientConfig) => {
+export const getRuntimeConfig = (config: OpsWorksCMClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-opsworkscm/runtimeConfig.native.ts b/clients/client-opsworkscm/runtimeConfig.native.ts
index ac409b3308ad..13a638a1c62e 100644
--- a/clients/client-opsworkscm/runtimeConfig.native.ts
+++ b/clients/client-opsworkscm/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: OpsWorksCMClientConfig) => {
+export const getRuntimeConfig = (config: OpsWorksCMClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-opsworkscm/runtimeConfig.shared.ts b/clients/client-opsworkscm/runtimeConfig.shared.ts
index 767b9edaba2b..a6f3d4b5c5c1 100644
--- a/clients/client-opsworkscm/runtimeConfig.shared.ts
+++ b/clients/client-opsworkscm/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { OpsWorksCMClientConfig } from "./OpsWorksCMClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: OpsWorksCMClientConfig) => ({
+export const getRuntimeConfig = (config: OpsWorksCMClientConfig = {}) => ({
   apiVersion: "2016-11-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-opsworkscm/runtimeConfig.ts b/clients/client-opsworkscm/runtimeConfig.ts
index 6322764bddfc..ff27ba28d132 100644
--- a/clients/client-opsworkscm/runtimeConfig.ts
+++ b/clients/client-opsworkscm/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: OpsWorksCMClientConfig) => {
+export const getRuntimeConfig = (config: OpsWorksCMClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-organizations/runtimeConfig.browser.ts b/clients/client-organizations/runtimeConfig.browser.ts
index 218f2233d5f3..298217a2e95a 100644
--- a/clients/client-organizations/runtimeConfig.browser.ts
+++ b/clients/client-organizations/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: OrganizationsClientConfig) => {
+export const getRuntimeConfig = (config: OrganizationsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-organizations/runtimeConfig.native.ts b/clients/client-organizations/runtimeConfig.native.ts
index 01164331286a..7dfa82ff9e90 100644
--- a/clients/client-organizations/runtimeConfig.native.ts
+++ b/clients/client-organizations/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: OrganizationsClientConfig) => {
+export const getRuntimeConfig = (config: OrganizationsClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-organizations/runtimeConfig.shared.ts b/clients/client-organizations/runtimeConfig.shared.ts
index 11da91c92f16..ee9df44d0231 100644
--- a/clients/client-organizations/runtimeConfig.shared.ts
+++ b/clients/client-organizations/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { OrganizationsClientConfig } from "./OrganizationsClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: OrganizationsClientConfig) => ({
+export const getRuntimeConfig = (config: OrganizationsClientConfig = {}) => ({
   apiVersion: "2016-11-28",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-organizations/runtimeConfig.ts b/clients/client-organizations/runtimeConfig.ts
index c886d004212b..a6ffb27a2fd8 100644
--- a/clients/client-organizations/runtimeConfig.ts
+++ b/clients/client-organizations/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: OrganizationsClientConfig) => {
+export const getRuntimeConfig = (config: OrganizationsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-outposts/runtimeConfig.browser.ts b/clients/client-outposts/runtimeConfig.browser.ts
index 0ee3943f45d1..60da58ed90e6 100644
--- a/clients/client-outposts/runtimeConfig.browser.ts
+++ b/clients/client-outposts/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: OutpostsClientConfig) => {
+export const getRuntimeConfig = (config: OutpostsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-outposts/runtimeConfig.native.ts b/clients/client-outposts/runtimeConfig.native.ts
index 189f77bfff41..8757e7cd3e28 100644
--- a/clients/client-outposts/runtimeConfig.native.ts
+++ b/clients/client-outposts/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: OutpostsClientConfig) => {
+export const getRuntimeConfig = (config: OutpostsClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-outposts/runtimeConfig.shared.ts b/clients/client-outposts/runtimeConfig.shared.ts
index 1e7a9fcb75b6..00b844196868 100644
--- a/clients/client-outposts/runtimeConfig.shared.ts
+++ b/clients/client-outposts/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { OutpostsClientConfig } from "./OutpostsClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: OutpostsClientConfig) => ({
+export const getRuntimeConfig = (config: OutpostsClientConfig = {}) => ({
   apiVersion: "2019-12-03",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-outposts/runtimeConfig.ts b/clients/client-outposts/runtimeConfig.ts
index f3876a186ce6..36f06a1695ca 100644
--- a/clients/client-outposts/runtimeConfig.ts
+++ b/clients/client-outposts/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: OutpostsClientConfig) => {
+export const getRuntimeConfig = (config: OutpostsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-personalize-events/runtimeConfig.browser.ts b/clients/client-personalize-events/runtimeConfig.browser.ts
index 2c00c395711d..765049d8502c 100644
--- a/clients/client-personalize-events/runtimeConfig.browser.ts
+++ b/clients/client-personalize-events/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PersonalizeEventsClientConfig) => {
+export const getRuntimeConfig = (config: PersonalizeEventsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-personalize-events/runtimeConfig.native.ts b/clients/client-personalize-events/runtimeConfig.native.ts
index 47f42cf255b0..ba307906cd63 100644
--- a/clients/client-personalize-events/runtimeConfig.native.ts
+++ b/clients/client-personalize-events/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PersonalizeEventsClientConfig) => {
+export const getRuntimeConfig = (config: PersonalizeEventsClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-personalize-events/runtimeConfig.shared.ts b/clients/client-personalize-events/runtimeConfig.shared.ts
index 3c77f09768ff..2b8cbeebb0fa 100644
--- a/clients/client-personalize-events/runtimeConfig.shared.ts
+++ b/clients/client-personalize-events/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { PersonalizeEventsClientConfig } from "./PersonalizeEventsClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PersonalizeEventsClientConfig) => ({
+export const getRuntimeConfig = (config: PersonalizeEventsClientConfig = {}) => ({
   apiVersion: "2018-03-22",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-personalize-events/runtimeConfig.ts b/clients/client-personalize-events/runtimeConfig.ts
index d456e8689dc8..304acc21f109 100644
--- a/clients/client-personalize-events/runtimeConfig.ts
+++ b/clients/client-personalize-events/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PersonalizeEventsClientConfig) => {
+export const getRuntimeConfig = (config: PersonalizeEventsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-personalize-runtime/runtimeConfig.browser.ts b/clients/client-personalize-runtime/runtimeConfig.browser.ts
index 167bf2b8893d..bf921891453c 100644
--- a/clients/client-personalize-runtime/runtimeConfig.browser.ts
+++ b/clients/client-personalize-runtime/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PersonalizeRuntimeClientConfig) => {
+export const getRuntimeConfig = (config: PersonalizeRuntimeClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-personalize-runtime/runtimeConfig.native.ts b/clients/client-personalize-runtime/runtimeConfig.native.ts
index 1f4b4c4bbfc5..0ff3d552a9eb 100644
--- a/clients/client-personalize-runtime/runtimeConfig.native.ts
+++ b/clients/client-personalize-runtime/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PersonalizeRuntimeClientConfig) => {
+export const getRuntimeConfig = (config: PersonalizeRuntimeClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-personalize-runtime/runtimeConfig.shared.ts b/clients/client-personalize-runtime/runtimeConfig.shared.ts
index 17879be9c2fa..aaf51530a4eb 100644
--- a/clients/client-personalize-runtime/runtimeConfig.shared.ts
+++ b/clients/client-personalize-runtime/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { PersonalizeRuntimeClientConfig } from "./PersonalizeRuntimeClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PersonalizeRuntimeClientConfig) => ({
+export const getRuntimeConfig = (config: PersonalizeRuntimeClientConfig = {}) => ({
   apiVersion: "2018-05-22",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-personalize-runtime/runtimeConfig.ts b/clients/client-personalize-runtime/runtimeConfig.ts
index 7718eef303d6..8e1f4efad6f3 100644
--- a/clients/client-personalize-runtime/runtimeConfig.ts
+++ b/clients/client-personalize-runtime/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PersonalizeRuntimeClientConfig) => {
+export const getRuntimeConfig = (config: PersonalizeRuntimeClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-personalize/runtimeConfig.browser.ts b/clients/client-personalize/runtimeConfig.browser.ts
index fc31eb0d8fad..58a76bb1ed27 100644
--- a/clients/client-personalize/runtimeConfig.browser.ts
+++ b/clients/client-personalize/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PersonalizeClientConfig) => {
+export const getRuntimeConfig = (config: PersonalizeClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-personalize/runtimeConfig.native.ts b/clients/client-personalize/runtimeConfig.native.ts
index 06612f2451a2..59a05926e616 100644
--- a/clients/client-personalize/runtimeConfig.native.ts
+++ b/clients/client-personalize/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PersonalizeClientConfig) => {
+export const getRuntimeConfig = (config: PersonalizeClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-personalize/runtimeConfig.shared.ts b/clients/client-personalize/runtimeConfig.shared.ts
index 9fa72c876aa8..acbeda86d63e 100644
--- a/clients/client-personalize/runtimeConfig.shared.ts
+++ b/clients/client-personalize/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { PersonalizeClientConfig } from "./PersonalizeClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PersonalizeClientConfig) => ({
+export const getRuntimeConfig = (config: PersonalizeClientConfig = {}) => ({
   apiVersion: "2018-05-22",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-personalize/runtimeConfig.ts b/clients/client-personalize/runtimeConfig.ts
index d604bc4bf093..e5b050104cd7 100644
--- a/clients/client-personalize/runtimeConfig.ts
+++ b/clients/client-personalize/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PersonalizeClientConfig) => {
+export const getRuntimeConfig = (config: PersonalizeClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-pi/runtimeConfig.browser.ts b/clients/client-pi/runtimeConfig.browser.ts
index 351296bae3c3..ecd9fb52b7ee 100644
--- a/clients/client-pi/runtimeConfig.browser.ts
+++ b/clients/client-pi/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PIClientConfig) => {
+export const getRuntimeConfig = (config: PIClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-pi/runtimeConfig.native.ts b/clients/client-pi/runtimeConfig.native.ts
index 67d833bbce28..0b0b0c6f136b 100644
--- a/clients/client-pi/runtimeConfig.native.ts
+++ b/clients/client-pi/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PIClientConfig) => {
+export const getRuntimeConfig = (config: PIClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-pi/runtimeConfig.shared.ts b/clients/client-pi/runtimeConfig.shared.ts
index 5ce6edc9bc93..412e836c323a 100644
--- a/clients/client-pi/runtimeConfig.shared.ts
+++ b/clients/client-pi/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { PIClientConfig } from "./PIClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PIClientConfig) => ({
+export const getRuntimeConfig = (config: PIClientConfig = {}) => ({
   apiVersion: "2018-02-27",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-pi/runtimeConfig.ts b/clients/client-pi/runtimeConfig.ts
index ac2c888420ad..c1080cb6a4fd 100644
--- a/clients/client-pi/runtimeConfig.ts
+++ b/clients/client-pi/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PIClientConfig) => {
+export const getRuntimeConfig = (config: PIClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-pinpoint-email/runtimeConfig.browser.ts b/clients/client-pinpoint-email/runtimeConfig.browser.ts
index 9684a001f3d4..9d426b9a476d 100644
--- a/clients/client-pinpoint-email/runtimeConfig.browser.ts
+++ b/clients/client-pinpoint-email/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PinpointEmailClientConfig) => {
+export const getRuntimeConfig = (config: PinpointEmailClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-pinpoint-email/runtimeConfig.native.ts b/clients/client-pinpoint-email/runtimeConfig.native.ts
index 50979281f95f..9305c02ca315 100644
--- a/clients/client-pinpoint-email/runtimeConfig.native.ts
+++ b/clients/client-pinpoint-email/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PinpointEmailClientConfig) => {
+export const getRuntimeConfig = (config: PinpointEmailClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-pinpoint-email/runtimeConfig.shared.ts b/clients/client-pinpoint-email/runtimeConfig.shared.ts
index 6770b3806a1d..e3c28a73ea27 100644
--- a/clients/client-pinpoint-email/runtimeConfig.shared.ts
+++ b/clients/client-pinpoint-email/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { PinpointEmailClientConfig } from "./PinpointEmailClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PinpointEmailClientConfig) => ({
+export const getRuntimeConfig = (config: PinpointEmailClientConfig = {}) => ({
   apiVersion: "2018-07-26",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-pinpoint-email/runtimeConfig.ts b/clients/client-pinpoint-email/runtimeConfig.ts
index 112d60241489..81a64c1303c6 100644
--- a/clients/client-pinpoint-email/runtimeConfig.ts
+++ b/clients/client-pinpoint-email/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PinpointEmailClientConfig) => {
+export const getRuntimeConfig = (config: PinpointEmailClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-pinpoint-sms-voice/runtimeConfig.browser.ts b/clients/client-pinpoint-sms-voice/runtimeConfig.browser.ts
index a1bf560e646a..0425f376b6c8 100644
--- a/clients/client-pinpoint-sms-voice/runtimeConfig.browser.ts
+++ b/clients/client-pinpoint-sms-voice/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PinpointSMSVoiceClientConfig) => {
+export const getRuntimeConfig = (config: PinpointSMSVoiceClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-pinpoint-sms-voice/runtimeConfig.native.ts b/clients/client-pinpoint-sms-voice/runtimeConfig.native.ts
index 9e470ca4d3c8..c983378ee549 100644
--- a/clients/client-pinpoint-sms-voice/runtimeConfig.native.ts
+++ b/clients/client-pinpoint-sms-voice/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PinpointSMSVoiceClientConfig) => {
+export const getRuntimeConfig = (config: PinpointSMSVoiceClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-pinpoint-sms-voice/runtimeConfig.shared.ts b/clients/client-pinpoint-sms-voice/runtimeConfig.shared.ts
index 5a26506585a2..c04a4d5e65ef 100644
--- a/clients/client-pinpoint-sms-voice/runtimeConfig.shared.ts
+++ b/clients/client-pinpoint-sms-voice/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { PinpointSMSVoiceClientConfig } from "./PinpointSMSVoiceClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PinpointSMSVoiceClientConfig) => ({
+export const getRuntimeConfig = (config: PinpointSMSVoiceClientConfig = {}) => ({
   apiVersion: "2018-09-05",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-pinpoint-sms-voice/runtimeConfig.ts b/clients/client-pinpoint-sms-voice/runtimeConfig.ts
index 32c18fd5e2a4..8ff35506d5b3 100644
--- a/clients/client-pinpoint-sms-voice/runtimeConfig.ts
+++ b/clients/client-pinpoint-sms-voice/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PinpointSMSVoiceClientConfig) => {
+export const getRuntimeConfig = (config: PinpointSMSVoiceClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-pinpoint/runtimeConfig.browser.ts b/clients/client-pinpoint/runtimeConfig.browser.ts
index d2be1d445d59..10c5c82b77f8 100644
--- a/clients/client-pinpoint/runtimeConfig.browser.ts
+++ b/clients/client-pinpoint/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PinpointClientConfig) => {
+export const getRuntimeConfig = (config: PinpointClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-pinpoint/runtimeConfig.native.ts b/clients/client-pinpoint/runtimeConfig.native.ts
index eda3832734d6..222a5bd33e99 100644
--- a/clients/client-pinpoint/runtimeConfig.native.ts
+++ b/clients/client-pinpoint/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PinpointClientConfig) => {
+export const getRuntimeConfig = (config: PinpointClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-pinpoint/runtimeConfig.shared.ts b/clients/client-pinpoint/runtimeConfig.shared.ts
index a4c2c867f307..4a2f9e12ac62 100644
--- a/clients/client-pinpoint/runtimeConfig.shared.ts
+++ b/clients/client-pinpoint/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { PinpointClientConfig } from "./PinpointClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PinpointClientConfig) => ({
+export const getRuntimeConfig = (config: PinpointClientConfig = {}) => ({
   apiVersion: "2016-12-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-pinpoint/runtimeConfig.ts b/clients/client-pinpoint/runtimeConfig.ts
index f1bcc4b5bfdb..d486808ccb28 100644
--- a/clients/client-pinpoint/runtimeConfig.ts
+++ b/clients/client-pinpoint/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PinpointClientConfig) => {
+export const getRuntimeConfig = (config: PinpointClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-polly/runtimeConfig.browser.ts b/clients/client-polly/runtimeConfig.browser.ts
index 19f7ac9fdd02..370d80e18a2c 100644
--- a/clients/client-polly/runtimeConfig.browser.ts
+++ b/clients/client-polly/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PollyClientConfig) => {
+export const getRuntimeConfig = (config: PollyClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-polly/runtimeConfig.native.ts b/clients/client-polly/runtimeConfig.native.ts
index 395e99222592..d0e29118e805 100644
--- a/clients/client-polly/runtimeConfig.native.ts
+++ b/clients/client-polly/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PollyClientConfig) => {
+export const getRuntimeConfig = (config: PollyClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-polly/runtimeConfig.shared.ts b/clients/client-polly/runtimeConfig.shared.ts
index ecf27e50dc57..5a66d11a93b3 100644
--- a/clients/client-polly/runtimeConfig.shared.ts
+++ b/clients/client-polly/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { PollyClientConfig } from "./PollyClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PollyClientConfig) => ({
+export const getRuntimeConfig = (config: PollyClientConfig = {}) => ({
   apiVersion: "2016-06-10",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-polly/runtimeConfig.ts b/clients/client-polly/runtimeConfig.ts
index cd32462fffe6..bb1c5c4fd2c2 100644
--- a/clients/client-polly/runtimeConfig.ts
+++ b/clients/client-polly/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PollyClientConfig) => {
+export const getRuntimeConfig = (config: PollyClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-pricing/runtimeConfig.browser.ts b/clients/client-pricing/runtimeConfig.browser.ts
index 18fd15dfc0c8..4c9ff360d2b0 100644
--- a/clients/client-pricing/runtimeConfig.browser.ts
+++ b/clients/client-pricing/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PricingClientConfig) => {
+export const getRuntimeConfig = (config: PricingClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-pricing/runtimeConfig.native.ts b/clients/client-pricing/runtimeConfig.native.ts
index 05f7637bebee..c4a66c34d034 100644
--- a/clients/client-pricing/runtimeConfig.native.ts
+++ b/clients/client-pricing/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PricingClientConfig) => {
+export const getRuntimeConfig = (config: PricingClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-pricing/runtimeConfig.shared.ts b/clients/client-pricing/runtimeConfig.shared.ts
index dbb218d0b2a8..de95aacb6fcb 100644
--- a/clients/client-pricing/runtimeConfig.shared.ts
+++ b/clients/client-pricing/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { PricingClientConfig } from "./PricingClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PricingClientConfig) => ({
+export const getRuntimeConfig = (config: PricingClientConfig = {}) => ({
   apiVersion: "2017-10-15",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-pricing/runtimeConfig.ts b/clients/client-pricing/runtimeConfig.ts
index e7743a2121c3..e9d972aa2dc5 100644
--- a/clients/client-pricing/runtimeConfig.ts
+++ b/clients/client-pricing/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: PricingClientConfig) => {
+export const getRuntimeConfig = (config: PricingClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-proton/runtimeConfig.browser.ts b/clients/client-proton/runtimeConfig.browser.ts
index ba0589bfb3f9..ed1644950911 100644
--- a/clients/client-proton/runtimeConfig.browser.ts
+++ b/clients/client-proton/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ProtonClientConfig) => {
+export const getRuntimeConfig = (config: ProtonClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-proton/runtimeConfig.native.ts b/clients/client-proton/runtimeConfig.native.ts
index 03c2a0d10e09..be29ce70a598 100644
--- a/clients/client-proton/runtimeConfig.native.ts
+++ b/clients/client-proton/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ProtonClientConfig) => {
+export const getRuntimeConfig = (config: ProtonClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-proton/runtimeConfig.shared.ts b/clients/client-proton/runtimeConfig.shared.ts
index 0926c4fac30a..5e87eb8c910e 100644
--- a/clients/client-proton/runtimeConfig.shared.ts
+++ b/clients/client-proton/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ProtonClientConfig } from "./ProtonClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ProtonClientConfig) => ({
+export const getRuntimeConfig = (config: ProtonClientConfig = {}) => ({
   apiVersion: "2020-07-20",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-proton/runtimeConfig.ts b/clients/client-proton/runtimeConfig.ts
index b8c0f5fb0878..2a6b6ca62153 100644
--- a/clients/client-proton/runtimeConfig.ts
+++ b/clients/client-proton/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ProtonClientConfig) => {
+export const getRuntimeConfig = (config: ProtonClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-qldb-session/runtimeConfig.browser.ts b/clients/client-qldb-session/runtimeConfig.browser.ts
index e82588999a3d..3f1694343271 100644
--- a/clients/client-qldb-session/runtimeConfig.browser.ts
+++ b/clients/client-qldb-session/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: QLDBSessionClientConfig) => {
+export const getRuntimeConfig = (config: QLDBSessionClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-qldb-session/runtimeConfig.native.ts b/clients/client-qldb-session/runtimeConfig.native.ts
index 9350e29fa5b8..34231b0a9d0c 100644
--- a/clients/client-qldb-session/runtimeConfig.native.ts
+++ b/clients/client-qldb-session/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: QLDBSessionClientConfig) => {
+export const getRuntimeConfig = (config: QLDBSessionClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-qldb-session/runtimeConfig.shared.ts b/clients/client-qldb-session/runtimeConfig.shared.ts
index 56b95c40ee52..4a7163a7a01d 100644
--- a/clients/client-qldb-session/runtimeConfig.shared.ts
+++ b/clients/client-qldb-session/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { QLDBSessionClientConfig } from "./QLDBSessionClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: QLDBSessionClientConfig) => ({
+export const getRuntimeConfig = (config: QLDBSessionClientConfig = {}) => ({
   apiVersion: "2019-07-11",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-qldb-session/runtimeConfig.ts b/clients/client-qldb-session/runtimeConfig.ts
index 86aa73861a51..a8bb81b19a37 100644
--- a/clients/client-qldb-session/runtimeConfig.ts
+++ b/clients/client-qldb-session/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: QLDBSessionClientConfig) => {
+export const getRuntimeConfig = (config: QLDBSessionClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-qldb/runtimeConfig.browser.ts b/clients/client-qldb/runtimeConfig.browser.ts
index 5a49dff4f3ea..740c0b8b0358 100644
--- a/clients/client-qldb/runtimeConfig.browser.ts
+++ b/clients/client-qldb/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: QLDBClientConfig) => {
+export const getRuntimeConfig = (config: QLDBClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-qldb/runtimeConfig.native.ts b/clients/client-qldb/runtimeConfig.native.ts
index e209ac561cef..853f4753b846 100644
--- a/clients/client-qldb/runtimeConfig.native.ts
+++ b/clients/client-qldb/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: QLDBClientConfig) => {
+export const getRuntimeConfig = (config: QLDBClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-qldb/runtimeConfig.shared.ts b/clients/client-qldb/runtimeConfig.shared.ts
index 41a3fda07474..84678ac12577 100644
--- a/clients/client-qldb/runtimeConfig.shared.ts
+++ b/clients/client-qldb/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { QLDBClientConfig } from "./QLDBClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: QLDBClientConfig) => ({
+export const getRuntimeConfig = (config: QLDBClientConfig = {}) => ({
   apiVersion: "2019-01-02",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-qldb/runtimeConfig.ts b/clients/client-qldb/runtimeConfig.ts
index b4cc80ff4ba7..33df10788a34 100644
--- a/clients/client-qldb/runtimeConfig.ts
+++ b/clients/client-qldb/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: QLDBClientConfig) => {
+export const getRuntimeConfig = (config: QLDBClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-quicksight/runtimeConfig.browser.ts b/clients/client-quicksight/runtimeConfig.browser.ts
index f4434420efe6..0f7eb74a6457 100644
--- a/clients/client-quicksight/runtimeConfig.browser.ts
+++ b/clients/client-quicksight/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: QuickSightClientConfig) => {
+export const getRuntimeConfig = (config: QuickSightClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-quicksight/runtimeConfig.native.ts b/clients/client-quicksight/runtimeConfig.native.ts
index 263cc4b0a765..a64b0b5058c5 100644
--- a/clients/client-quicksight/runtimeConfig.native.ts
+++ b/clients/client-quicksight/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: QuickSightClientConfig) => {
+export const getRuntimeConfig = (config: QuickSightClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-quicksight/runtimeConfig.shared.ts b/clients/client-quicksight/runtimeConfig.shared.ts
index 9f2d3198267a..ef17455091eb 100644
--- a/clients/client-quicksight/runtimeConfig.shared.ts
+++ b/clients/client-quicksight/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { QuickSightClientConfig } from "./QuickSightClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: QuickSightClientConfig) => ({
+export const getRuntimeConfig = (config: QuickSightClientConfig = {}) => ({
   apiVersion: "2018-04-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-quicksight/runtimeConfig.ts b/clients/client-quicksight/runtimeConfig.ts
index 3f72f66b4f0a..77f6d700603f 100644
--- a/clients/client-quicksight/runtimeConfig.ts
+++ b/clients/client-quicksight/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: QuickSightClientConfig) => {
+export const getRuntimeConfig = (config: QuickSightClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-ram/runtimeConfig.browser.ts b/clients/client-ram/runtimeConfig.browser.ts
index d5aaad456d73..f523d106954e 100644
--- a/clients/client-ram/runtimeConfig.browser.ts
+++ b/clients/client-ram/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RAMClientConfig) => {
+export const getRuntimeConfig = (config: RAMClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-ram/runtimeConfig.native.ts b/clients/client-ram/runtimeConfig.native.ts
index 6d7410c768ff..65ce5b36f6c5 100644
--- a/clients/client-ram/runtimeConfig.native.ts
+++ b/clients/client-ram/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RAMClientConfig) => {
+export const getRuntimeConfig = (config: RAMClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-ram/runtimeConfig.shared.ts b/clients/client-ram/runtimeConfig.shared.ts
index cd94f0fba434..72c8c8bfd290 100644
--- a/clients/client-ram/runtimeConfig.shared.ts
+++ b/clients/client-ram/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { RAMClientConfig } from "./RAMClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RAMClientConfig) => ({
+export const getRuntimeConfig = (config: RAMClientConfig = {}) => ({
   apiVersion: "2018-01-04",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-ram/runtimeConfig.ts b/clients/client-ram/runtimeConfig.ts
index 0c78f4316853..40e2134efe11 100644
--- a/clients/client-ram/runtimeConfig.ts
+++ b/clients/client-ram/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RAMClientConfig) => {
+export const getRuntimeConfig = (config: RAMClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-rds-data/runtimeConfig.browser.ts b/clients/client-rds-data/runtimeConfig.browser.ts
index c9bd710c7c61..4de98fd046d5 100644
--- a/clients/client-rds-data/runtimeConfig.browser.ts
+++ b/clients/client-rds-data/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RDSDataClientConfig) => {
+export const getRuntimeConfig = (config: RDSDataClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-rds-data/runtimeConfig.native.ts b/clients/client-rds-data/runtimeConfig.native.ts
index 0593e91f5f9d..0330b515669f 100644
--- a/clients/client-rds-data/runtimeConfig.native.ts
+++ b/clients/client-rds-data/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RDSDataClientConfig) => {
+export const getRuntimeConfig = (config: RDSDataClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-rds-data/runtimeConfig.shared.ts b/clients/client-rds-data/runtimeConfig.shared.ts
index 9b3ed733470a..0d695a328c25 100644
--- a/clients/client-rds-data/runtimeConfig.shared.ts
+++ b/clients/client-rds-data/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { RDSDataClientConfig } from "./RDSDataClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RDSDataClientConfig) => ({
+export const getRuntimeConfig = (config: RDSDataClientConfig = {}) => ({
   apiVersion: "2018-08-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-rds-data/runtimeConfig.ts b/clients/client-rds-data/runtimeConfig.ts
index d97464df5cc4..0151e73de7ef 100644
--- a/clients/client-rds-data/runtimeConfig.ts
+++ b/clients/client-rds-data/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RDSDataClientConfig) => {
+export const getRuntimeConfig = (config: RDSDataClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-rds/runtimeConfig.browser.ts b/clients/client-rds/runtimeConfig.browser.ts
index 5794fb811b9f..e80f894b8872 100644
--- a/clients/client-rds/runtimeConfig.browser.ts
+++ b/clients/client-rds/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RDSClientConfig) => {
+export const getRuntimeConfig = (config: RDSClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-rds/runtimeConfig.native.ts b/clients/client-rds/runtimeConfig.native.ts
index 8e3bad2acf80..efb08bfb30b3 100644
--- a/clients/client-rds/runtimeConfig.native.ts
+++ b/clients/client-rds/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RDSClientConfig) => {
+export const getRuntimeConfig = (config: RDSClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-rds/runtimeConfig.shared.ts b/clients/client-rds/runtimeConfig.shared.ts
index b3f26db10e55..820d4e4d865c 100644
--- a/clients/client-rds/runtimeConfig.shared.ts
+++ b/clients/client-rds/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { RDSClientConfig } from "./RDSClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RDSClientConfig) => ({
+export const getRuntimeConfig = (config: RDSClientConfig = {}) => ({
   apiVersion: "2014-10-31",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-rds/runtimeConfig.ts b/clients/client-rds/runtimeConfig.ts
index 845e8a9725ec..7691400d298d 100644
--- a/clients/client-rds/runtimeConfig.ts
+++ b/clients/client-rds/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RDSClientConfig) => {
+export const getRuntimeConfig = (config: RDSClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-redshift-data/runtimeConfig.browser.ts b/clients/client-redshift-data/runtimeConfig.browser.ts
index aad32b59e691..b82732b7cac6 100644
--- a/clients/client-redshift-data/runtimeConfig.browser.ts
+++ b/clients/client-redshift-data/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RedshiftDataClientConfig) => {
+export const getRuntimeConfig = (config: RedshiftDataClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-redshift-data/runtimeConfig.native.ts b/clients/client-redshift-data/runtimeConfig.native.ts
index 0e9e3e117175..4e92107bdcc6 100644
--- a/clients/client-redshift-data/runtimeConfig.native.ts
+++ b/clients/client-redshift-data/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RedshiftDataClientConfig) => {
+export const getRuntimeConfig = (config: RedshiftDataClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-redshift-data/runtimeConfig.shared.ts b/clients/client-redshift-data/runtimeConfig.shared.ts
index 4bfb1f7a10e1..18a3bafe39d5 100644
--- a/clients/client-redshift-data/runtimeConfig.shared.ts
+++ b/clients/client-redshift-data/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { RedshiftDataClientConfig } from "./RedshiftDataClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RedshiftDataClientConfig) => ({
+export const getRuntimeConfig = (config: RedshiftDataClientConfig = {}) => ({
   apiVersion: "2019-12-20",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-redshift-data/runtimeConfig.ts b/clients/client-redshift-data/runtimeConfig.ts
index ea4573050a6b..c7ce54252575 100644
--- a/clients/client-redshift-data/runtimeConfig.ts
+++ b/clients/client-redshift-data/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RedshiftDataClientConfig) => {
+export const getRuntimeConfig = (config: RedshiftDataClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-redshift/runtimeConfig.browser.ts b/clients/client-redshift/runtimeConfig.browser.ts
index f3c52c63b072..879930545af4 100644
--- a/clients/client-redshift/runtimeConfig.browser.ts
+++ b/clients/client-redshift/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RedshiftClientConfig) => {
+export const getRuntimeConfig = (config: RedshiftClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-redshift/runtimeConfig.native.ts b/clients/client-redshift/runtimeConfig.native.ts
index 29360a336d15..28e964eee338 100644
--- a/clients/client-redshift/runtimeConfig.native.ts
+++ b/clients/client-redshift/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RedshiftClientConfig) => {
+export const getRuntimeConfig = (config: RedshiftClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-redshift/runtimeConfig.shared.ts b/clients/client-redshift/runtimeConfig.shared.ts
index 9e9d6d2c4293..7c250072af22 100644
--- a/clients/client-redshift/runtimeConfig.shared.ts
+++ b/clients/client-redshift/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { RedshiftClientConfig } from "./RedshiftClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RedshiftClientConfig) => ({
+export const getRuntimeConfig = (config: RedshiftClientConfig = {}) => ({
   apiVersion: "2012-12-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-redshift/runtimeConfig.ts b/clients/client-redshift/runtimeConfig.ts
index 6ce05fae7658..ae1b7f0a2f24 100644
--- a/clients/client-redshift/runtimeConfig.ts
+++ b/clients/client-redshift/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RedshiftClientConfig) => {
+export const getRuntimeConfig = (config: RedshiftClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-rekognition/runtimeConfig.browser.ts b/clients/client-rekognition/runtimeConfig.browser.ts
index cf2cef7850d5..9b55e4b0c539 100644
--- a/clients/client-rekognition/runtimeConfig.browser.ts
+++ b/clients/client-rekognition/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RekognitionClientConfig) => {
+export const getRuntimeConfig = (config: RekognitionClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-rekognition/runtimeConfig.native.ts b/clients/client-rekognition/runtimeConfig.native.ts
index 090454466fdd..4f6345fec1f6 100644
--- a/clients/client-rekognition/runtimeConfig.native.ts
+++ b/clients/client-rekognition/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RekognitionClientConfig) => {
+export const getRuntimeConfig = (config: RekognitionClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-rekognition/runtimeConfig.shared.ts b/clients/client-rekognition/runtimeConfig.shared.ts
index 87c181841e9e..cd41b6cbb089 100644
--- a/clients/client-rekognition/runtimeConfig.shared.ts
+++ b/clients/client-rekognition/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { RekognitionClientConfig } from "./RekognitionClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RekognitionClientConfig) => ({
+export const getRuntimeConfig = (config: RekognitionClientConfig = {}) => ({
   apiVersion: "2016-06-27",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-rekognition/runtimeConfig.ts b/clients/client-rekognition/runtimeConfig.ts
index e8ff60537d6c..c760de860730 100644
--- a/clients/client-rekognition/runtimeConfig.ts
+++ b/clients/client-rekognition/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RekognitionClientConfig) => {
+export const getRuntimeConfig = (config: RekognitionClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-resource-groups-tagging-api/runtimeConfig.browser.ts b/clients/client-resource-groups-tagging-api/runtimeConfig.browser.ts
index ef408a052008..dabd3cf75ff8 100644
--- a/clients/client-resource-groups-tagging-api/runtimeConfig.browser.ts
+++ b/clients/client-resource-groups-tagging-api/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ResourceGroupsTaggingAPIClientConfig) => {
+export const getRuntimeConfig = (config: ResourceGroupsTaggingAPIClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-resource-groups-tagging-api/runtimeConfig.native.ts b/clients/client-resource-groups-tagging-api/runtimeConfig.native.ts
index efc10fd63894..b7cdf507fcb4 100644
--- a/clients/client-resource-groups-tagging-api/runtimeConfig.native.ts
+++ b/clients/client-resource-groups-tagging-api/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ResourceGroupsTaggingAPIClientConfig) => {
+export const getRuntimeConfig = (config: ResourceGroupsTaggingAPIClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-resource-groups-tagging-api/runtimeConfig.shared.ts b/clients/client-resource-groups-tagging-api/runtimeConfig.shared.ts
index c6e0e5157049..c8d028d97eed 100644
--- a/clients/client-resource-groups-tagging-api/runtimeConfig.shared.ts
+++ b/clients/client-resource-groups-tagging-api/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ResourceGroupsTaggingAPIClientConfig } from "./ResourceGroupsTaggingAPI
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ResourceGroupsTaggingAPIClientConfig) => ({
+export const getRuntimeConfig = (config: ResourceGroupsTaggingAPIClientConfig = {}) => ({
   apiVersion: "2017-01-26",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-resource-groups-tagging-api/runtimeConfig.ts b/clients/client-resource-groups-tagging-api/runtimeConfig.ts
index 661f203d54bb..6e6b584ca994 100644
--- a/clients/client-resource-groups-tagging-api/runtimeConfig.ts
+++ b/clients/client-resource-groups-tagging-api/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ResourceGroupsTaggingAPIClientConfig) => {
+export const getRuntimeConfig = (config: ResourceGroupsTaggingAPIClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-resource-groups/runtimeConfig.browser.ts b/clients/client-resource-groups/runtimeConfig.browser.ts
index 49050b01b2ff..c145de20a9c6 100644
--- a/clients/client-resource-groups/runtimeConfig.browser.ts
+++ b/clients/client-resource-groups/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ResourceGroupsClientConfig) => {
+export const getRuntimeConfig = (config: ResourceGroupsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-resource-groups/runtimeConfig.native.ts b/clients/client-resource-groups/runtimeConfig.native.ts
index 95a2df4f6dd0..2e7f9a41f34a 100644
--- a/clients/client-resource-groups/runtimeConfig.native.ts
+++ b/clients/client-resource-groups/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ResourceGroupsClientConfig) => {
+export const getRuntimeConfig = (config: ResourceGroupsClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-resource-groups/runtimeConfig.shared.ts b/clients/client-resource-groups/runtimeConfig.shared.ts
index b147faad5ce7..b69b08a742c2 100644
--- a/clients/client-resource-groups/runtimeConfig.shared.ts
+++ b/clients/client-resource-groups/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ResourceGroupsClientConfig } from "./ResourceGroupsClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ResourceGroupsClientConfig) => ({
+export const getRuntimeConfig = (config: ResourceGroupsClientConfig = {}) => ({
   apiVersion: "2017-11-27",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-resource-groups/runtimeConfig.ts b/clients/client-resource-groups/runtimeConfig.ts
index cd1df6cef423..7433667af5b0 100644
--- a/clients/client-resource-groups/runtimeConfig.ts
+++ b/clients/client-resource-groups/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ResourceGroupsClientConfig) => {
+export const getRuntimeConfig = (config: ResourceGroupsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-robomaker/runtimeConfig.browser.ts b/clients/client-robomaker/runtimeConfig.browser.ts
index 8d4fa5411e75..90845f234c7b 100644
--- a/clients/client-robomaker/runtimeConfig.browser.ts
+++ b/clients/client-robomaker/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RoboMakerClientConfig) => {
+export const getRuntimeConfig = (config: RoboMakerClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-robomaker/runtimeConfig.native.ts b/clients/client-robomaker/runtimeConfig.native.ts
index b2922309b48f..70a6416a6aaf 100644
--- a/clients/client-robomaker/runtimeConfig.native.ts
+++ b/clients/client-robomaker/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RoboMakerClientConfig) => {
+export const getRuntimeConfig = (config: RoboMakerClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-robomaker/runtimeConfig.shared.ts b/clients/client-robomaker/runtimeConfig.shared.ts
index 216921710538..c15269594ca4 100644
--- a/clients/client-robomaker/runtimeConfig.shared.ts
+++ b/clients/client-robomaker/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { RoboMakerClientConfig } from "./RoboMakerClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RoboMakerClientConfig) => ({
+export const getRuntimeConfig = (config: RoboMakerClientConfig = {}) => ({
   apiVersion: "2018-06-29",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-robomaker/runtimeConfig.ts b/clients/client-robomaker/runtimeConfig.ts
index 5b7a0824ccf6..c19e5dea89d3 100644
--- a/clients/client-robomaker/runtimeConfig.ts
+++ b/clients/client-robomaker/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RoboMakerClientConfig) => {
+export const getRuntimeConfig = (config: RoboMakerClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-route-53-domains/runtimeConfig.browser.ts b/clients/client-route-53-domains/runtimeConfig.browser.ts
index 00d1003aa27e..c236b4eb58ad 100644
--- a/clients/client-route-53-domains/runtimeConfig.browser.ts
+++ b/clients/client-route-53-domains/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: Route53DomainsClientConfig) => {
+export const getRuntimeConfig = (config: Route53DomainsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-route-53-domains/runtimeConfig.native.ts b/clients/client-route-53-domains/runtimeConfig.native.ts
index cc2c631e6cab..835b4b921ec7 100644
--- a/clients/client-route-53-domains/runtimeConfig.native.ts
+++ b/clients/client-route-53-domains/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: Route53DomainsClientConfig) => {
+export const getRuntimeConfig = (config: Route53DomainsClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-route-53-domains/runtimeConfig.shared.ts b/clients/client-route-53-domains/runtimeConfig.shared.ts
index c891f5d58892..5368e8d8a410 100644
--- a/clients/client-route-53-domains/runtimeConfig.shared.ts
+++ b/clients/client-route-53-domains/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { Route53DomainsClientConfig } from "./Route53DomainsClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: Route53DomainsClientConfig) => ({
+export const getRuntimeConfig = (config: Route53DomainsClientConfig = {}) => ({
   apiVersion: "2014-05-15",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-route-53-domains/runtimeConfig.ts b/clients/client-route-53-domains/runtimeConfig.ts
index 12173951ff87..9159c4e5bc81 100644
--- a/clients/client-route-53-domains/runtimeConfig.ts
+++ b/clients/client-route-53-domains/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: Route53DomainsClientConfig) => {
+export const getRuntimeConfig = (config: Route53DomainsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-route-53/runtimeConfig.browser.ts b/clients/client-route-53/runtimeConfig.browser.ts
index 4e673774835e..e2cf486d6b02 100644
--- a/clients/client-route-53/runtimeConfig.browser.ts
+++ b/clients/client-route-53/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: Route53ClientConfig) => {
+export const getRuntimeConfig = (config: Route53ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-route-53/runtimeConfig.native.ts b/clients/client-route-53/runtimeConfig.native.ts
index 2f411d9bdca3..04d8649b8cbf 100644
--- a/clients/client-route-53/runtimeConfig.native.ts
+++ b/clients/client-route-53/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: Route53ClientConfig) => {
+export const getRuntimeConfig = (config: Route53ClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-route-53/runtimeConfig.shared.ts b/clients/client-route-53/runtimeConfig.shared.ts
index c8a06cb888fb..13c0ecafa89e 100644
--- a/clients/client-route-53/runtimeConfig.shared.ts
+++ b/clients/client-route-53/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { Route53ClientConfig } from "./Route53Client";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: Route53ClientConfig) => ({
+export const getRuntimeConfig = (config: Route53ClientConfig = {}) => ({
   apiVersion: "2013-04-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-route-53/runtimeConfig.ts b/clients/client-route-53/runtimeConfig.ts
index 09ff09787221..77021a34b1a4 100644
--- a/clients/client-route-53/runtimeConfig.ts
+++ b/clients/client-route-53/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: Route53ClientConfig) => {
+export const getRuntimeConfig = (config: Route53ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-route53resolver/runtimeConfig.browser.ts b/clients/client-route53resolver/runtimeConfig.browser.ts
index 932d043f932c..a51b7f708ad4 100644
--- a/clients/client-route53resolver/runtimeConfig.browser.ts
+++ b/clients/client-route53resolver/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: Route53ResolverClientConfig) => {
+export const getRuntimeConfig = (config: Route53ResolverClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-route53resolver/runtimeConfig.native.ts b/clients/client-route53resolver/runtimeConfig.native.ts
index 76c79bb74043..fea1d40274c5 100644
--- a/clients/client-route53resolver/runtimeConfig.native.ts
+++ b/clients/client-route53resolver/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: Route53ResolverClientConfig) => {
+export const getRuntimeConfig = (config: Route53ResolverClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-route53resolver/runtimeConfig.shared.ts b/clients/client-route53resolver/runtimeConfig.shared.ts
index 4492b5845167..077640481eb4 100644
--- a/clients/client-route53resolver/runtimeConfig.shared.ts
+++ b/clients/client-route53resolver/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { Route53ResolverClientConfig } from "./Route53ResolverClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: Route53ResolverClientConfig) => ({
+export const getRuntimeConfig = (config: Route53ResolverClientConfig = {}) => ({
   apiVersion: "2018-04-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-route53resolver/runtimeConfig.ts b/clients/client-route53resolver/runtimeConfig.ts
index 1629690442e0..3a7129f168ac 100644
--- a/clients/client-route53resolver/runtimeConfig.ts
+++ b/clients/client-route53resolver/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: Route53ResolverClientConfig) => {
+export const getRuntimeConfig = (config: Route53ResolverClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-s3-control/runtimeConfig.browser.ts b/clients/client-s3-control/runtimeConfig.browser.ts
index 0b53a9558a0d..a8aa21ce5bef 100644
--- a/clients/client-s3-control/runtimeConfig.browser.ts
+++ b/clients/client-s3-control/runtimeConfig.browser.ts
@@ -16,7 +16,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: S3ControlClientConfig) => {
+export const getRuntimeConfig = (config: S3ControlClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-s3-control/runtimeConfig.native.ts b/clients/client-s3-control/runtimeConfig.native.ts
index 973ea862230b..639f39bb3ac5 100644
--- a/clients/client-s3-control/runtimeConfig.native.ts
+++ b/clients/client-s3-control/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: S3ControlClientConfig) => {
+export const getRuntimeConfig = (config: S3ControlClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-s3-control/runtimeConfig.shared.ts b/clients/client-s3-control/runtimeConfig.shared.ts
index 7ec8a6d6b123..2d1ffcabcac8 100644
--- a/clients/client-s3-control/runtimeConfig.shared.ts
+++ b/clients/client-s3-control/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { S3ControlClientConfig } from "./S3ControlClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: S3ControlClientConfig) => ({
+export const getRuntimeConfig = (config: S3ControlClientConfig = {}) => ({
   apiVersion: "2018-08-20",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-s3-control/runtimeConfig.ts b/clients/client-s3-control/runtimeConfig.ts
index 7d7a8260e28e..f6f8ae9cbd5a 100644
--- a/clients/client-s3-control/runtimeConfig.ts
+++ b/clients/client-s3-control/runtimeConfig.ts
@@ -19,7 +19,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: S3ControlClientConfig) => {
+export const getRuntimeConfig = (config: S3ControlClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-s3/runtimeConfig.browser.ts b/clients/client-s3/runtimeConfig.browser.ts
index 57ec0e655ffd..1b3adc4b7da7 100644
--- a/clients/client-s3/runtimeConfig.browser.ts
+++ b/clients/client-s3/runtimeConfig.browser.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: S3ClientConfig) => {
+export const getRuntimeConfig = (config: S3ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-s3/runtimeConfig.native.ts b/clients/client-s3/runtimeConfig.native.ts
index 26979d09e809..3e083b44f1c3 100644
--- a/clients/client-s3/runtimeConfig.native.ts
+++ b/clients/client-s3/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: S3ClientConfig) => {
+export const getRuntimeConfig = (config: S3ClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-s3/runtimeConfig.shared.ts b/clients/client-s3/runtimeConfig.shared.ts
index 9d5ae1dc693d..a707c31e76cb 100644
--- a/clients/client-s3/runtimeConfig.shared.ts
+++ b/clients/client-s3/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { S3ClientConfig } from "./S3Client";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: S3ClientConfig) => ({
+export const getRuntimeConfig = (config: S3ClientConfig = {}) => ({
   apiVersion: "2006-03-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-s3/runtimeConfig.ts b/clients/client-s3/runtimeConfig.ts
index 3b9f08531129..e8d4a50befda 100644
--- a/clients/client-s3/runtimeConfig.ts
+++ b/clients/client-s3/runtimeConfig.ts
@@ -21,7 +21,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: S3ClientConfig) => {
+export const getRuntimeConfig = (config: S3ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-s3outposts/runtimeConfig.browser.ts b/clients/client-s3outposts/runtimeConfig.browser.ts
index c47019c8f644..a2ab2398fbe5 100644
--- a/clients/client-s3outposts/runtimeConfig.browser.ts
+++ b/clients/client-s3outposts/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: S3OutpostsClientConfig) => {
+export const getRuntimeConfig = (config: S3OutpostsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-s3outposts/runtimeConfig.native.ts b/clients/client-s3outposts/runtimeConfig.native.ts
index acc637dc6273..65185e0479d0 100644
--- a/clients/client-s3outposts/runtimeConfig.native.ts
+++ b/clients/client-s3outposts/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: S3OutpostsClientConfig) => {
+export const getRuntimeConfig = (config: S3OutpostsClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-s3outposts/runtimeConfig.shared.ts b/clients/client-s3outposts/runtimeConfig.shared.ts
index 7e2056de6197..ee0aff636752 100644
--- a/clients/client-s3outposts/runtimeConfig.shared.ts
+++ b/clients/client-s3outposts/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { S3OutpostsClientConfig } from "./S3OutpostsClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: S3OutpostsClientConfig) => ({
+export const getRuntimeConfig = (config: S3OutpostsClientConfig = {}) => ({
   apiVersion: "2017-07-25",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-s3outposts/runtimeConfig.ts b/clients/client-s3outposts/runtimeConfig.ts
index c4c56945be66..824dcaaea280 100644
--- a/clients/client-s3outposts/runtimeConfig.ts
+++ b/clients/client-s3outposts/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: S3OutpostsClientConfig) => {
+export const getRuntimeConfig = (config: S3OutpostsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-sagemaker-a2i-runtime/runtimeConfig.browser.ts b/clients/client-sagemaker-a2i-runtime/runtimeConfig.browser.ts
index 03580f17e177..468ccf11b6d9 100644
--- a/clients/client-sagemaker-a2i-runtime/runtimeConfig.browser.ts
+++ b/clients/client-sagemaker-a2i-runtime/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SageMakerA2IRuntimeClientConfig) => {
+export const getRuntimeConfig = (config: SageMakerA2IRuntimeClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-sagemaker-a2i-runtime/runtimeConfig.native.ts b/clients/client-sagemaker-a2i-runtime/runtimeConfig.native.ts
index 094ea469e328..7f79ebffee45 100644
--- a/clients/client-sagemaker-a2i-runtime/runtimeConfig.native.ts
+++ b/clients/client-sagemaker-a2i-runtime/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SageMakerA2IRuntimeClientConfig) => {
+export const getRuntimeConfig = (config: SageMakerA2IRuntimeClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-sagemaker-a2i-runtime/runtimeConfig.shared.ts b/clients/client-sagemaker-a2i-runtime/runtimeConfig.shared.ts
index 97fa844e91c9..f0c373a460b7 100644
--- a/clients/client-sagemaker-a2i-runtime/runtimeConfig.shared.ts
+++ b/clients/client-sagemaker-a2i-runtime/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { SageMakerA2IRuntimeClientConfig } from "./SageMakerA2IRuntimeClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SageMakerA2IRuntimeClientConfig) => ({
+export const getRuntimeConfig = (config: SageMakerA2IRuntimeClientConfig = {}) => ({
   apiVersion: "2019-11-07",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-sagemaker-a2i-runtime/runtimeConfig.ts b/clients/client-sagemaker-a2i-runtime/runtimeConfig.ts
index 89867ca646c3..ede7119f9376 100644
--- a/clients/client-sagemaker-a2i-runtime/runtimeConfig.ts
+++ b/clients/client-sagemaker-a2i-runtime/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SageMakerA2IRuntimeClientConfig) => {
+export const getRuntimeConfig = (config: SageMakerA2IRuntimeClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-sagemaker-edge/runtimeConfig.browser.ts b/clients/client-sagemaker-edge/runtimeConfig.browser.ts
index 2f561d611d11..58ee43c9bdde 100644
--- a/clients/client-sagemaker-edge/runtimeConfig.browser.ts
+++ b/clients/client-sagemaker-edge/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SagemakerEdgeClientConfig) => {
+export const getRuntimeConfig = (config: SagemakerEdgeClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-sagemaker-edge/runtimeConfig.native.ts b/clients/client-sagemaker-edge/runtimeConfig.native.ts
index fd6b7cd12823..0e5c114fd5cc 100644
--- a/clients/client-sagemaker-edge/runtimeConfig.native.ts
+++ b/clients/client-sagemaker-edge/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SagemakerEdgeClientConfig) => {
+export const getRuntimeConfig = (config: SagemakerEdgeClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-sagemaker-edge/runtimeConfig.shared.ts b/clients/client-sagemaker-edge/runtimeConfig.shared.ts
index 92ed0520ec6c..7794e1d7420c 100644
--- a/clients/client-sagemaker-edge/runtimeConfig.shared.ts
+++ b/clients/client-sagemaker-edge/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { SagemakerEdgeClientConfig } from "./SagemakerEdgeClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SagemakerEdgeClientConfig) => ({
+export const getRuntimeConfig = (config: SagemakerEdgeClientConfig = {}) => ({
   apiVersion: "2020-09-23",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-sagemaker-edge/runtimeConfig.ts b/clients/client-sagemaker-edge/runtimeConfig.ts
index 133bab8978c1..643083b75e3d 100644
--- a/clients/client-sagemaker-edge/runtimeConfig.ts
+++ b/clients/client-sagemaker-edge/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SagemakerEdgeClientConfig) => {
+export const getRuntimeConfig = (config: SagemakerEdgeClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-sagemaker-featurestore-runtime/runtimeConfig.browser.ts b/clients/client-sagemaker-featurestore-runtime/runtimeConfig.browser.ts
index f40d20513cb8..24e65621de36 100644
--- a/clients/client-sagemaker-featurestore-runtime/runtimeConfig.browser.ts
+++ b/clients/client-sagemaker-featurestore-runtime/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SageMakerFeatureStoreRuntimeClientConfig) => {
+export const getRuntimeConfig = (config: SageMakerFeatureStoreRuntimeClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-sagemaker-featurestore-runtime/runtimeConfig.native.ts b/clients/client-sagemaker-featurestore-runtime/runtimeConfig.native.ts
index e4f4ad59212e..e81c5677e473 100644
--- a/clients/client-sagemaker-featurestore-runtime/runtimeConfig.native.ts
+++ b/clients/client-sagemaker-featurestore-runtime/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SageMakerFeatureStoreRuntimeClientConfig) => {
+export const getRuntimeConfig = (config: SageMakerFeatureStoreRuntimeClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-sagemaker-featurestore-runtime/runtimeConfig.shared.ts b/clients/client-sagemaker-featurestore-runtime/runtimeConfig.shared.ts
index 34be1771f9ed..f2ee5ee79019 100644
--- a/clients/client-sagemaker-featurestore-runtime/runtimeConfig.shared.ts
+++ b/clients/client-sagemaker-featurestore-runtime/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { SageMakerFeatureStoreRuntimeClientConfig } from "./SageMakerFeatureStor
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SageMakerFeatureStoreRuntimeClientConfig) => ({
+export const getRuntimeConfig = (config: SageMakerFeatureStoreRuntimeClientConfig = {}) => ({
   apiVersion: "2020-07-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-sagemaker-featurestore-runtime/runtimeConfig.ts b/clients/client-sagemaker-featurestore-runtime/runtimeConfig.ts
index f5b10a4ccfc2..ac8b6b2b0a45 100644
--- a/clients/client-sagemaker-featurestore-runtime/runtimeConfig.ts
+++ b/clients/client-sagemaker-featurestore-runtime/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SageMakerFeatureStoreRuntimeClientConfig) => {
+export const getRuntimeConfig = (config: SageMakerFeatureStoreRuntimeClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-sagemaker-runtime/runtimeConfig.browser.ts b/clients/client-sagemaker-runtime/runtimeConfig.browser.ts
index 7a8cc9e62e3e..a9ca2d116225 100644
--- a/clients/client-sagemaker-runtime/runtimeConfig.browser.ts
+++ b/clients/client-sagemaker-runtime/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SageMakerRuntimeClientConfig) => {
+export const getRuntimeConfig = (config: SageMakerRuntimeClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-sagemaker-runtime/runtimeConfig.native.ts b/clients/client-sagemaker-runtime/runtimeConfig.native.ts
index 51063ff4b631..9758222e7b78 100644
--- a/clients/client-sagemaker-runtime/runtimeConfig.native.ts
+++ b/clients/client-sagemaker-runtime/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SageMakerRuntimeClientConfig) => {
+export const getRuntimeConfig = (config: SageMakerRuntimeClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-sagemaker-runtime/runtimeConfig.shared.ts b/clients/client-sagemaker-runtime/runtimeConfig.shared.ts
index 69521077eed4..871535b16888 100644
--- a/clients/client-sagemaker-runtime/runtimeConfig.shared.ts
+++ b/clients/client-sagemaker-runtime/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { SageMakerRuntimeClientConfig } from "./SageMakerRuntimeClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SageMakerRuntimeClientConfig) => ({
+export const getRuntimeConfig = (config: SageMakerRuntimeClientConfig = {}) => ({
   apiVersion: "2017-05-13",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-sagemaker-runtime/runtimeConfig.ts b/clients/client-sagemaker-runtime/runtimeConfig.ts
index d04bd1b730f5..f86e46a95c4c 100644
--- a/clients/client-sagemaker-runtime/runtimeConfig.ts
+++ b/clients/client-sagemaker-runtime/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SageMakerRuntimeClientConfig) => {
+export const getRuntimeConfig = (config: SageMakerRuntimeClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-sagemaker/runtimeConfig.browser.ts b/clients/client-sagemaker/runtimeConfig.browser.ts
index 825521a31221..3c0239ceecce 100644
--- a/clients/client-sagemaker/runtimeConfig.browser.ts
+++ b/clients/client-sagemaker/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SageMakerClientConfig) => {
+export const getRuntimeConfig = (config: SageMakerClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-sagemaker/runtimeConfig.native.ts b/clients/client-sagemaker/runtimeConfig.native.ts
index 7c01d313a010..7ff626abb554 100644
--- a/clients/client-sagemaker/runtimeConfig.native.ts
+++ b/clients/client-sagemaker/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SageMakerClientConfig) => {
+export const getRuntimeConfig = (config: SageMakerClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-sagemaker/runtimeConfig.shared.ts b/clients/client-sagemaker/runtimeConfig.shared.ts
index 15f6a80c9dad..7fc803e9ad61 100644
--- a/clients/client-sagemaker/runtimeConfig.shared.ts
+++ b/clients/client-sagemaker/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { SageMakerClientConfig } from "./SageMakerClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SageMakerClientConfig) => ({
+export const getRuntimeConfig = (config: SageMakerClientConfig = {}) => ({
   apiVersion: "2017-07-24",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-sagemaker/runtimeConfig.ts b/clients/client-sagemaker/runtimeConfig.ts
index 2989f4601777..f0f155ee3d29 100644
--- a/clients/client-sagemaker/runtimeConfig.ts
+++ b/clients/client-sagemaker/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SageMakerClientConfig) => {
+export const getRuntimeConfig = (config: SageMakerClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-savingsplans/runtimeConfig.browser.ts b/clients/client-savingsplans/runtimeConfig.browser.ts
index 4cc6b1d2eed2..66928076d23b 100644
--- a/clients/client-savingsplans/runtimeConfig.browser.ts
+++ b/clients/client-savingsplans/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SavingsplansClientConfig) => {
+export const getRuntimeConfig = (config: SavingsplansClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-savingsplans/runtimeConfig.native.ts b/clients/client-savingsplans/runtimeConfig.native.ts
index 48a0b7d11ba5..ec923633552b 100644
--- a/clients/client-savingsplans/runtimeConfig.native.ts
+++ b/clients/client-savingsplans/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SavingsplansClientConfig) => {
+export const getRuntimeConfig = (config: SavingsplansClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-savingsplans/runtimeConfig.shared.ts b/clients/client-savingsplans/runtimeConfig.shared.ts
index a02d35d1680e..06a04383727b 100644
--- a/clients/client-savingsplans/runtimeConfig.shared.ts
+++ b/clients/client-savingsplans/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { SavingsplansClientConfig } from "./SavingsplansClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SavingsplansClientConfig) => ({
+export const getRuntimeConfig = (config: SavingsplansClientConfig = {}) => ({
   apiVersion: "2019-06-28",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-savingsplans/runtimeConfig.ts b/clients/client-savingsplans/runtimeConfig.ts
index af5e973d0f8e..631c455a8ed2 100644
--- a/clients/client-savingsplans/runtimeConfig.ts
+++ b/clients/client-savingsplans/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SavingsplansClientConfig) => {
+export const getRuntimeConfig = (config: SavingsplansClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-schemas/runtimeConfig.browser.ts b/clients/client-schemas/runtimeConfig.browser.ts
index 12cb4aa42289..d6240170e2ad 100644
--- a/clients/client-schemas/runtimeConfig.browser.ts
+++ b/clients/client-schemas/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SchemasClientConfig) => {
+export const getRuntimeConfig = (config: SchemasClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-schemas/runtimeConfig.native.ts b/clients/client-schemas/runtimeConfig.native.ts
index 0898502c4bdf..01e1941a6a29 100644
--- a/clients/client-schemas/runtimeConfig.native.ts
+++ b/clients/client-schemas/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SchemasClientConfig) => {
+export const getRuntimeConfig = (config: SchemasClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-schemas/runtimeConfig.shared.ts b/clients/client-schemas/runtimeConfig.shared.ts
index 3623abe9e665..e043768abd46 100644
--- a/clients/client-schemas/runtimeConfig.shared.ts
+++ b/clients/client-schemas/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { SchemasClientConfig } from "./SchemasClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SchemasClientConfig) => ({
+export const getRuntimeConfig = (config: SchemasClientConfig = {}) => ({
   apiVersion: "2019-12-02",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-schemas/runtimeConfig.ts b/clients/client-schemas/runtimeConfig.ts
index 21388a685059..d4a2d6c6745e 100644
--- a/clients/client-schemas/runtimeConfig.ts
+++ b/clients/client-schemas/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SchemasClientConfig) => {
+export const getRuntimeConfig = (config: SchemasClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-secrets-manager/runtimeConfig.browser.ts b/clients/client-secrets-manager/runtimeConfig.browser.ts
index 32cc1889c963..f9b8354ae4e9 100644
--- a/clients/client-secrets-manager/runtimeConfig.browser.ts
+++ b/clients/client-secrets-manager/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SecretsManagerClientConfig) => {
+export const getRuntimeConfig = (config: SecretsManagerClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-secrets-manager/runtimeConfig.native.ts b/clients/client-secrets-manager/runtimeConfig.native.ts
index 1ce38b48fccf..c88c62be938c 100644
--- a/clients/client-secrets-manager/runtimeConfig.native.ts
+++ b/clients/client-secrets-manager/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SecretsManagerClientConfig) => {
+export const getRuntimeConfig = (config: SecretsManagerClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-secrets-manager/runtimeConfig.shared.ts b/clients/client-secrets-manager/runtimeConfig.shared.ts
index a39e27bbf482..91cdb6c571ac 100644
--- a/clients/client-secrets-manager/runtimeConfig.shared.ts
+++ b/clients/client-secrets-manager/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { SecretsManagerClientConfig } from "./SecretsManagerClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SecretsManagerClientConfig) => ({
+export const getRuntimeConfig = (config: SecretsManagerClientConfig = {}) => ({
   apiVersion: "2017-10-17",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-secrets-manager/runtimeConfig.ts b/clients/client-secrets-manager/runtimeConfig.ts
index 243aeb3bf30f..d55c862b5536 100644
--- a/clients/client-secrets-manager/runtimeConfig.ts
+++ b/clients/client-secrets-manager/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SecretsManagerClientConfig) => {
+export const getRuntimeConfig = (config: SecretsManagerClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-securityhub/runtimeConfig.browser.ts b/clients/client-securityhub/runtimeConfig.browser.ts
index e962f7439f6b..b702b5c81030 100644
--- a/clients/client-securityhub/runtimeConfig.browser.ts
+++ b/clients/client-securityhub/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SecurityHubClientConfig) => {
+export const getRuntimeConfig = (config: SecurityHubClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-securityhub/runtimeConfig.native.ts b/clients/client-securityhub/runtimeConfig.native.ts
index f838f18dd207..a8d715c72a73 100644
--- a/clients/client-securityhub/runtimeConfig.native.ts
+++ b/clients/client-securityhub/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SecurityHubClientConfig) => {
+export const getRuntimeConfig = (config: SecurityHubClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-securityhub/runtimeConfig.shared.ts b/clients/client-securityhub/runtimeConfig.shared.ts
index f46bb72d4410..40ba8b1df49c 100644
--- a/clients/client-securityhub/runtimeConfig.shared.ts
+++ b/clients/client-securityhub/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { SecurityHubClientConfig } from "./SecurityHubClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SecurityHubClientConfig) => ({
+export const getRuntimeConfig = (config: SecurityHubClientConfig = {}) => ({
   apiVersion: "2018-10-26",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-securityhub/runtimeConfig.ts b/clients/client-securityhub/runtimeConfig.ts
index 3dddb6159305..1c0734e7e33e 100644
--- a/clients/client-securityhub/runtimeConfig.ts
+++ b/clients/client-securityhub/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SecurityHubClientConfig) => {
+export const getRuntimeConfig = (config: SecurityHubClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-serverlessapplicationrepository/runtimeConfig.browser.ts b/clients/client-serverlessapplicationrepository/runtimeConfig.browser.ts
index 82bc48b0a9f3..1e06c3031e59 100644
--- a/clients/client-serverlessapplicationrepository/runtimeConfig.browser.ts
+++ b/clients/client-serverlessapplicationrepository/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ServerlessApplicationRepositoryClientConfig) => {
+export const getRuntimeConfig = (config: ServerlessApplicationRepositoryClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-serverlessapplicationrepository/runtimeConfig.native.ts b/clients/client-serverlessapplicationrepository/runtimeConfig.native.ts
index 34e427da43b6..1d004880f276 100644
--- a/clients/client-serverlessapplicationrepository/runtimeConfig.native.ts
+++ b/clients/client-serverlessapplicationrepository/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ServerlessApplicationRepositoryClientConfig) => {
+export const getRuntimeConfig = (config: ServerlessApplicationRepositoryClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-serverlessapplicationrepository/runtimeConfig.shared.ts b/clients/client-serverlessapplicationrepository/runtimeConfig.shared.ts
index 21466de3636b..c978ee744601 100644
--- a/clients/client-serverlessapplicationrepository/runtimeConfig.shared.ts
+++ b/clients/client-serverlessapplicationrepository/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ServerlessApplicationRepositoryClientConfig } from "./ServerlessApplica
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ServerlessApplicationRepositoryClientConfig) => ({
+export const getRuntimeConfig = (config: ServerlessApplicationRepositoryClientConfig = {}) => ({
   apiVersion: "2017-09-08",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-serverlessapplicationrepository/runtimeConfig.ts b/clients/client-serverlessapplicationrepository/runtimeConfig.ts
index 48131d80c2ac..5719d8b8f99c 100644
--- a/clients/client-serverlessapplicationrepository/runtimeConfig.ts
+++ b/clients/client-serverlessapplicationrepository/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ServerlessApplicationRepositoryClientConfig) => {
+export const getRuntimeConfig = (config: ServerlessApplicationRepositoryClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-service-catalog-appregistry/runtimeConfig.browser.ts b/clients/client-service-catalog-appregistry/runtimeConfig.browser.ts
index 1b5632b05971..63be51108c7f 100644
--- a/clients/client-service-catalog-appregistry/runtimeConfig.browser.ts
+++ b/clients/client-service-catalog-appregistry/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ServiceCatalogAppRegistryClientConfig) => {
+export const getRuntimeConfig = (config: ServiceCatalogAppRegistryClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-service-catalog-appregistry/runtimeConfig.native.ts b/clients/client-service-catalog-appregistry/runtimeConfig.native.ts
index 0c90d94b5fcf..28913232036f 100644
--- a/clients/client-service-catalog-appregistry/runtimeConfig.native.ts
+++ b/clients/client-service-catalog-appregistry/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ServiceCatalogAppRegistryClientConfig) => {
+export const getRuntimeConfig = (config: ServiceCatalogAppRegistryClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-service-catalog-appregistry/runtimeConfig.shared.ts b/clients/client-service-catalog-appregistry/runtimeConfig.shared.ts
index ea2d942814c2..88b196682051 100644
--- a/clients/client-service-catalog-appregistry/runtimeConfig.shared.ts
+++ b/clients/client-service-catalog-appregistry/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ServiceCatalogAppRegistryClientConfig } from "./ServiceCatalogAppRegist
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ServiceCatalogAppRegistryClientConfig) => ({
+export const getRuntimeConfig = (config: ServiceCatalogAppRegistryClientConfig = {}) => ({
   apiVersion: "2020-06-24",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-service-catalog-appregistry/runtimeConfig.ts b/clients/client-service-catalog-appregistry/runtimeConfig.ts
index 6830204f9eed..35e96862d0dc 100644
--- a/clients/client-service-catalog-appregistry/runtimeConfig.ts
+++ b/clients/client-service-catalog-appregistry/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ServiceCatalogAppRegistryClientConfig) => {
+export const getRuntimeConfig = (config: ServiceCatalogAppRegistryClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-service-catalog/runtimeConfig.browser.ts b/clients/client-service-catalog/runtimeConfig.browser.ts
index dbdab34f1eb7..437c7979086c 100644
--- a/clients/client-service-catalog/runtimeConfig.browser.ts
+++ b/clients/client-service-catalog/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ServiceCatalogClientConfig) => {
+export const getRuntimeConfig = (config: ServiceCatalogClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-service-catalog/runtimeConfig.native.ts b/clients/client-service-catalog/runtimeConfig.native.ts
index 85fabe8cfd8e..b18ff0dc4c1e 100644
--- a/clients/client-service-catalog/runtimeConfig.native.ts
+++ b/clients/client-service-catalog/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ServiceCatalogClientConfig) => {
+export const getRuntimeConfig = (config: ServiceCatalogClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-service-catalog/runtimeConfig.shared.ts b/clients/client-service-catalog/runtimeConfig.shared.ts
index 97cb2331e478..daedfdc1b1bf 100644
--- a/clients/client-service-catalog/runtimeConfig.shared.ts
+++ b/clients/client-service-catalog/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ServiceCatalogClientConfig } from "./ServiceCatalogClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ServiceCatalogClientConfig) => ({
+export const getRuntimeConfig = (config: ServiceCatalogClientConfig = {}) => ({
   apiVersion: "2015-12-10",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-service-catalog/runtimeConfig.ts b/clients/client-service-catalog/runtimeConfig.ts
index 410a13671db2..9ff786e58978 100644
--- a/clients/client-service-catalog/runtimeConfig.ts
+++ b/clients/client-service-catalog/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ServiceCatalogClientConfig) => {
+export const getRuntimeConfig = (config: ServiceCatalogClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-service-quotas/runtimeConfig.browser.ts b/clients/client-service-quotas/runtimeConfig.browser.ts
index 5719907f105b..15fee2ee74d1 100644
--- a/clients/client-service-quotas/runtimeConfig.browser.ts
+++ b/clients/client-service-quotas/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ServiceQuotasClientConfig) => {
+export const getRuntimeConfig = (config: ServiceQuotasClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-service-quotas/runtimeConfig.native.ts b/clients/client-service-quotas/runtimeConfig.native.ts
index 027a23122832..e5e994167593 100644
--- a/clients/client-service-quotas/runtimeConfig.native.ts
+++ b/clients/client-service-quotas/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ServiceQuotasClientConfig) => {
+export const getRuntimeConfig = (config: ServiceQuotasClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-service-quotas/runtimeConfig.shared.ts b/clients/client-service-quotas/runtimeConfig.shared.ts
index 298cdea303d6..8a99237cedee 100644
--- a/clients/client-service-quotas/runtimeConfig.shared.ts
+++ b/clients/client-service-quotas/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ServiceQuotasClientConfig } from "./ServiceQuotasClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ServiceQuotasClientConfig) => ({
+export const getRuntimeConfig = (config: ServiceQuotasClientConfig = {}) => ({
   apiVersion: "2019-06-24",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-service-quotas/runtimeConfig.ts b/clients/client-service-quotas/runtimeConfig.ts
index 19f13ccbd6b4..d81e51a431de 100644
--- a/clients/client-service-quotas/runtimeConfig.ts
+++ b/clients/client-service-quotas/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ServiceQuotasClientConfig) => {
+export const getRuntimeConfig = (config: ServiceQuotasClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-servicediscovery/runtimeConfig.browser.ts b/clients/client-servicediscovery/runtimeConfig.browser.ts
index 572e617e1baa..67c7628cd704 100644
--- a/clients/client-servicediscovery/runtimeConfig.browser.ts
+++ b/clients/client-servicediscovery/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ServiceDiscoveryClientConfig) => {
+export const getRuntimeConfig = (config: ServiceDiscoveryClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-servicediscovery/runtimeConfig.native.ts b/clients/client-servicediscovery/runtimeConfig.native.ts
index ca61275a1075..96c53aa1a60b 100644
--- a/clients/client-servicediscovery/runtimeConfig.native.ts
+++ b/clients/client-servicediscovery/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ServiceDiscoveryClientConfig) => {
+export const getRuntimeConfig = (config: ServiceDiscoveryClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-servicediscovery/runtimeConfig.shared.ts b/clients/client-servicediscovery/runtimeConfig.shared.ts
index 5a6736b460aa..eb68cb19d3de 100644
--- a/clients/client-servicediscovery/runtimeConfig.shared.ts
+++ b/clients/client-servicediscovery/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ServiceDiscoveryClientConfig } from "./ServiceDiscoveryClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ServiceDiscoveryClientConfig) => ({
+export const getRuntimeConfig = (config: ServiceDiscoveryClientConfig = {}) => ({
   apiVersion: "2017-03-14",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-servicediscovery/runtimeConfig.ts b/clients/client-servicediscovery/runtimeConfig.ts
index 0382691f03ad..3b4df39e4920 100644
--- a/clients/client-servicediscovery/runtimeConfig.ts
+++ b/clients/client-servicediscovery/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ServiceDiscoveryClientConfig) => {
+export const getRuntimeConfig = (config: ServiceDiscoveryClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-ses/runtimeConfig.browser.ts b/clients/client-ses/runtimeConfig.browser.ts
index e94546f157bc..ea4189823667 100644
--- a/clients/client-ses/runtimeConfig.browser.ts
+++ b/clients/client-ses/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SESClientConfig) => {
+export const getRuntimeConfig = (config: SESClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-ses/runtimeConfig.native.ts b/clients/client-ses/runtimeConfig.native.ts
index 0d784cebbd61..e5f1c58f5849 100644
--- a/clients/client-ses/runtimeConfig.native.ts
+++ b/clients/client-ses/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SESClientConfig) => {
+export const getRuntimeConfig = (config: SESClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-ses/runtimeConfig.shared.ts b/clients/client-ses/runtimeConfig.shared.ts
index edb372f6e8b7..ef7ebe3953e5 100644
--- a/clients/client-ses/runtimeConfig.shared.ts
+++ b/clients/client-ses/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { SESClientConfig } from "./SESClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SESClientConfig) => ({
+export const getRuntimeConfig = (config: SESClientConfig = {}) => ({
   apiVersion: "2010-12-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-ses/runtimeConfig.ts b/clients/client-ses/runtimeConfig.ts
index e6d1cc41fd0c..66808f43625a 100644
--- a/clients/client-ses/runtimeConfig.ts
+++ b/clients/client-ses/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SESClientConfig) => {
+export const getRuntimeConfig = (config: SESClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-sesv2/runtimeConfig.browser.ts b/clients/client-sesv2/runtimeConfig.browser.ts
index 0c120e3f2948..16cedbf4ff1b 100644
--- a/clients/client-sesv2/runtimeConfig.browser.ts
+++ b/clients/client-sesv2/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SESv2ClientConfig) => {
+export const getRuntimeConfig = (config: SESv2ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-sesv2/runtimeConfig.native.ts b/clients/client-sesv2/runtimeConfig.native.ts
index 4192f5782da1..96710bca9f36 100644
--- a/clients/client-sesv2/runtimeConfig.native.ts
+++ b/clients/client-sesv2/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SESv2ClientConfig) => {
+export const getRuntimeConfig = (config: SESv2ClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-sesv2/runtimeConfig.shared.ts b/clients/client-sesv2/runtimeConfig.shared.ts
index 9f59f23ccdc8..457d182ffe2e 100644
--- a/clients/client-sesv2/runtimeConfig.shared.ts
+++ b/clients/client-sesv2/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { SESv2ClientConfig } from "./SESv2Client";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SESv2ClientConfig) => ({
+export const getRuntimeConfig = (config: SESv2ClientConfig = {}) => ({
   apiVersion: "2019-09-27",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-sesv2/runtimeConfig.ts b/clients/client-sesv2/runtimeConfig.ts
index 2b4479195199..2f4009c6b2bd 100644
--- a/clients/client-sesv2/runtimeConfig.ts
+++ b/clients/client-sesv2/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SESv2ClientConfig) => {
+export const getRuntimeConfig = (config: SESv2ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-sfn/runtimeConfig.browser.ts b/clients/client-sfn/runtimeConfig.browser.ts
index 0c59b3950c2c..0742ca4f0cba 100644
--- a/clients/client-sfn/runtimeConfig.browser.ts
+++ b/clients/client-sfn/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SFNClientConfig) => {
+export const getRuntimeConfig = (config: SFNClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-sfn/runtimeConfig.native.ts b/clients/client-sfn/runtimeConfig.native.ts
index b52aeabdec13..a2219b3ea846 100644
--- a/clients/client-sfn/runtimeConfig.native.ts
+++ b/clients/client-sfn/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SFNClientConfig) => {
+export const getRuntimeConfig = (config: SFNClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-sfn/runtimeConfig.shared.ts b/clients/client-sfn/runtimeConfig.shared.ts
index 869ac6e9a185..49b59f25c374 100644
--- a/clients/client-sfn/runtimeConfig.shared.ts
+++ b/clients/client-sfn/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { SFNClientConfig } from "./SFNClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SFNClientConfig) => ({
+export const getRuntimeConfig = (config: SFNClientConfig = {}) => ({
   apiVersion: "2016-11-23",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-sfn/runtimeConfig.ts b/clients/client-sfn/runtimeConfig.ts
index f92fbf0b63db..a417f626d5e7 100644
--- a/clients/client-sfn/runtimeConfig.ts
+++ b/clients/client-sfn/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SFNClientConfig) => {
+export const getRuntimeConfig = (config: SFNClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-shield/runtimeConfig.browser.ts b/clients/client-shield/runtimeConfig.browser.ts
index b6b34c7e8395..b4b3dcf82ed0 100644
--- a/clients/client-shield/runtimeConfig.browser.ts
+++ b/clients/client-shield/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ShieldClientConfig) => {
+export const getRuntimeConfig = (config: ShieldClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-shield/runtimeConfig.native.ts b/clients/client-shield/runtimeConfig.native.ts
index d5aca17e5346..8d060dab25fc 100644
--- a/clients/client-shield/runtimeConfig.native.ts
+++ b/clients/client-shield/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ShieldClientConfig) => {
+export const getRuntimeConfig = (config: ShieldClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-shield/runtimeConfig.shared.ts b/clients/client-shield/runtimeConfig.shared.ts
index e80e574fe992..e6868cf6abd8 100644
--- a/clients/client-shield/runtimeConfig.shared.ts
+++ b/clients/client-shield/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { ShieldClientConfig } from "./ShieldClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ShieldClientConfig) => ({
+export const getRuntimeConfig = (config: ShieldClientConfig = {}) => ({
   apiVersion: "2016-06-02",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-shield/runtimeConfig.ts b/clients/client-shield/runtimeConfig.ts
index d44f9813b0b9..d9dd6f35c1a6 100644
--- a/clients/client-shield/runtimeConfig.ts
+++ b/clients/client-shield/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: ShieldClientConfig) => {
+export const getRuntimeConfig = (config: ShieldClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-signer/runtimeConfig.browser.ts b/clients/client-signer/runtimeConfig.browser.ts
index c2e8465bed36..eaec730f96d2 100644
--- a/clients/client-signer/runtimeConfig.browser.ts
+++ b/clients/client-signer/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SignerClientConfig) => {
+export const getRuntimeConfig = (config: SignerClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-signer/runtimeConfig.native.ts b/clients/client-signer/runtimeConfig.native.ts
index 8ebf00324e41..029d984a380b 100644
--- a/clients/client-signer/runtimeConfig.native.ts
+++ b/clients/client-signer/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SignerClientConfig) => {
+export const getRuntimeConfig = (config: SignerClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-signer/runtimeConfig.shared.ts b/clients/client-signer/runtimeConfig.shared.ts
index e607e33048dc..90cd27a90a0a 100644
--- a/clients/client-signer/runtimeConfig.shared.ts
+++ b/clients/client-signer/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { SignerClientConfig } from "./SignerClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SignerClientConfig) => ({
+export const getRuntimeConfig = (config: SignerClientConfig = {}) => ({
   apiVersion: "2017-08-25",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-signer/runtimeConfig.ts b/clients/client-signer/runtimeConfig.ts
index 15afc47c26c2..8971532d0ef8 100644
--- a/clients/client-signer/runtimeConfig.ts
+++ b/clients/client-signer/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SignerClientConfig) => {
+export const getRuntimeConfig = (config: SignerClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-sms/runtimeConfig.browser.ts b/clients/client-sms/runtimeConfig.browser.ts
index 08e1d6a68b2f..c1112748f352 100644
--- a/clients/client-sms/runtimeConfig.browser.ts
+++ b/clients/client-sms/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SMSClientConfig) => {
+export const getRuntimeConfig = (config: SMSClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-sms/runtimeConfig.native.ts b/clients/client-sms/runtimeConfig.native.ts
index 06a638d1f449..a7f6acb4bc33 100644
--- a/clients/client-sms/runtimeConfig.native.ts
+++ b/clients/client-sms/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SMSClientConfig) => {
+export const getRuntimeConfig = (config: SMSClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-sms/runtimeConfig.shared.ts b/clients/client-sms/runtimeConfig.shared.ts
index 8eed773e9eea..939eacef3c61 100644
--- a/clients/client-sms/runtimeConfig.shared.ts
+++ b/clients/client-sms/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { SMSClientConfig } from "./SMSClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SMSClientConfig) => ({
+export const getRuntimeConfig = (config: SMSClientConfig = {}) => ({
   apiVersion: "2016-10-24",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-sms/runtimeConfig.ts b/clients/client-sms/runtimeConfig.ts
index d6cc5768b246..20c294289843 100644
--- a/clients/client-sms/runtimeConfig.ts
+++ b/clients/client-sms/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SMSClientConfig) => {
+export const getRuntimeConfig = (config: SMSClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-snowball/runtimeConfig.browser.ts b/clients/client-snowball/runtimeConfig.browser.ts
index 72a0017a4b15..6f5d0f6e5181 100644
--- a/clients/client-snowball/runtimeConfig.browser.ts
+++ b/clients/client-snowball/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SnowballClientConfig) => {
+export const getRuntimeConfig = (config: SnowballClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-snowball/runtimeConfig.native.ts b/clients/client-snowball/runtimeConfig.native.ts
index a4e443880ff8..6f0b42b0e319 100644
--- a/clients/client-snowball/runtimeConfig.native.ts
+++ b/clients/client-snowball/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SnowballClientConfig) => {
+export const getRuntimeConfig = (config: SnowballClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-snowball/runtimeConfig.shared.ts b/clients/client-snowball/runtimeConfig.shared.ts
index 5bbb4b923b95..4dd0877c4aa6 100644
--- a/clients/client-snowball/runtimeConfig.shared.ts
+++ b/clients/client-snowball/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { SnowballClientConfig } from "./SnowballClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SnowballClientConfig) => ({
+export const getRuntimeConfig = (config: SnowballClientConfig = {}) => ({
   apiVersion: "2016-06-30",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-snowball/runtimeConfig.ts b/clients/client-snowball/runtimeConfig.ts
index 86725821f830..c9574c2f3d7a 100644
--- a/clients/client-snowball/runtimeConfig.ts
+++ b/clients/client-snowball/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SnowballClientConfig) => {
+export const getRuntimeConfig = (config: SnowballClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-sns/runtimeConfig.browser.ts b/clients/client-sns/runtimeConfig.browser.ts
index aa4532c24ced..7b6ca113c37b 100644
--- a/clients/client-sns/runtimeConfig.browser.ts
+++ b/clients/client-sns/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SNSClientConfig) => {
+export const getRuntimeConfig = (config: SNSClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-sns/runtimeConfig.native.ts b/clients/client-sns/runtimeConfig.native.ts
index 8c44aa86d2cf..b481d998cbc4 100644
--- a/clients/client-sns/runtimeConfig.native.ts
+++ b/clients/client-sns/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SNSClientConfig) => {
+export const getRuntimeConfig = (config: SNSClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-sns/runtimeConfig.shared.ts b/clients/client-sns/runtimeConfig.shared.ts
index b5dad9ecbca3..bd5e08a331fc 100644
--- a/clients/client-sns/runtimeConfig.shared.ts
+++ b/clients/client-sns/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { SNSClientConfig } from "./SNSClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SNSClientConfig) => ({
+export const getRuntimeConfig = (config: SNSClientConfig = {}) => ({
   apiVersion: "2010-03-31",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-sns/runtimeConfig.ts b/clients/client-sns/runtimeConfig.ts
index dde2b51d791f..11874ea53b88 100644
--- a/clients/client-sns/runtimeConfig.ts
+++ b/clients/client-sns/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SNSClientConfig) => {
+export const getRuntimeConfig = (config: SNSClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-sqs/runtimeConfig.browser.ts b/clients/client-sqs/runtimeConfig.browser.ts
index 67915dafa360..b9121d28ea02 100644
--- a/clients/client-sqs/runtimeConfig.browser.ts
+++ b/clients/client-sqs/runtimeConfig.browser.ts
@@ -15,7 +15,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SQSClientConfig) => {
+export const getRuntimeConfig = (config: SQSClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-sqs/runtimeConfig.native.ts b/clients/client-sqs/runtimeConfig.native.ts
index ae80b26a042d..3066dd80d6c7 100644
--- a/clients/client-sqs/runtimeConfig.native.ts
+++ b/clients/client-sqs/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SQSClientConfig) => {
+export const getRuntimeConfig = (config: SQSClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-sqs/runtimeConfig.shared.ts b/clients/client-sqs/runtimeConfig.shared.ts
index 1331b6fa83d7..87c2be61cea7 100644
--- a/clients/client-sqs/runtimeConfig.shared.ts
+++ b/clients/client-sqs/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { SQSClientConfig } from "./SQSClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SQSClientConfig) => ({
+export const getRuntimeConfig = (config: SQSClientConfig = {}) => ({
   apiVersion: "2012-11-05",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-sqs/runtimeConfig.ts b/clients/client-sqs/runtimeConfig.ts
index 0fcbb6ba5e09..2c9f69fe5947 100644
--- a/clients/client-sqs/runtimeConfig.ts
+++ b/clients/client-sqs/runtimeConfig.ts
@@ -18,7 +18,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SQSClientConfig) => {
+export const getRuntimeConfig = (config: SQSClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-ssm-contacts/runtimeConfig.browser.ts b/clients/client-ssm-contacts/runtimeConfig.browser.ts
index 1b6e86a05a23..f9555df82b12 100644
--- a/clients/client-ssm-contacts/runtimeConfig.browser.ts
+++ b/clients/client-ssm-contacts/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SSMContactsClientConfig) => {
+export const getRuntimeConfig = (config: SSMContactsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-ssm-contacts/runtimeConfig.native.ts b/clients/client-ssm-contacts/runtimeConfig.native.ts
index 7280824773cb..f7f89898a312 100644
--- a/clients/client-ssm-contacts/runtimeConfig.native.ts
+++ b/clients/client-ssm-contacts/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SSMContactsClientConfig) => {
+export const getRuntimeConfig = (config: SSMContactsClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-ssm-contacts/runtimeConfig.shared.ts b/clients/client-ssm-contacts/runtimeConfig.shared.ts
index 660a260e8e1c..ca310d31fd91 100644
--- a/clients/client-ssm-contacts/runtimeConfig.shared.ts
+++ b/clients/client-ssm-contacts/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { SSMContactsClientConfig } from "./SSMContactsClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SSMContactsClientConfig) => ({
+export const getRuntimeConfig = (config: SSMContactsClientConfig = {}) => ({
   apiVersion: "2021-05-03",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-ssm-contacts/runtimeConfig.ts b/clients/client-ssm-contacts/runtimeConfig.ts
index 0c7f34974378..6d0fbe6f278b 100644
--- a/clients/client-ssm-contacts/runtimeConfig.ts
+++ b/clients/client-ssm-contacts/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SSMContactsClientConfig) => {
+export const getRuntimeConfig = (config: SSMContactsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-ssm-incidents/runtimeConfig.browser.ts b/clients/client-ssm-incidents/runtimeConfig.browser.ts
index 9a4ec3b4209c..f18a90bac0b2 100644
--- a/clients/client-ssm-incidents/runtimeConfig.browser.ts
+++ b/clients/client-ssm-incidents/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SSMIncidentsClientConfig) => {
+export const getRuntimeConfig = (config: SSMIncidentsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-ssm-incidents/runtimeConfig.native.ts b/clients/client-ssm-incidents/runtimeConfig.native.ts
index 7072b47f9468..29449087527e 100644
--- a/clients/client-ssm-incidents/runtimeConfig.native.ts
+++ b/clients/client-ssm-incidents/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SSMIncidentsClientConfig) => {
+export const getRuntimeConfig = (config: SSMIncidentsClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-ssm-incidents/runtimeConfig.shared.ts b/clients/client-ssm-incidents/runtimeConfig.shared.ts
index 2d5247091727..331ee172f194 100644
--- a/clients/client-ssm-incidents/runtimeConfig.shared.ts
+++ b/clients/client-ssm-incidents/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { SSMIncidentsClientConfig } from "./SSMIncidentsClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SSMIncidentsClientConfig) => ({
+export const getRuntimeConfig = (config: SSMIncidentsClientConfig = {}) => ({
   apiVersion: "2018-05-10",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-ssm-incidents/runtimeConfig.ts b/clients/client-ssm-incidents/runtimeConfig.ts
index b73ec370a90e..12e069568efe 100644
--- a/clients/client-ssm-incidents/runtimeConfig.ts
+++ b/clients/client-ssm-incidents/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SSMIncidentsClientConfig) => {
+export const getRuntimeConfig = (config: SSMIncidentsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-ssm/runtimeConfig.browser.ts b/clients/client-ssm/runtimeConfig.browser.ts
index 221b75b7001b..a02af99ddcd5 100644
--- a/clients/client-ssm/runtimeConfig.browser.ts
+++ b/clients/client-ssm/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SSMClientConfig) => {
+export const getRuntimeConfig = (config: SSMClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-ssm/runtimeConfig.native.ts b/clients/client-ssm/runtimeConfig.native.ts
index 0340061eb5e0..c61c193c1978 100644
--- a/clients/client-ssm/runtimeConfig.native.ts
+++ b/clients/client-ssm/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SSMClientConfig) => {
+export const getRuntimeConfig = (config: SSMClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-ssm/runtimeConfig.shared.ts b/clients/client-ssm/runtimeConfig.shared.ts
index 65558141959b..0a050c166ad1 100644
--- a/clients/client-ssm/runtimeConfig.shared.ts
+++ b/clients/client-ssm/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { SSMClientConfig } from "./SSMClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SSMClientConfig) => ({
+export const getRuntimeConfig = (config: SSMClientConfig = {}) => ({
   apiVersion: "2014-11-06",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-ssm/runtimeConfig.ts b/clients/client-ssm/runtimeConfig.ts
index 388f8276744c..aef635f08476 100644
--- a/clients/client-ssm/runtimeConfig.ts
+++ b/clients/client-ssm/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SSMClientConfig) => {
+export const getRuntimeConfig = (config: SSMClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-sso-admin/runtimeConfig.browser.ts b/clients/client-sso-admin/runtimeConfig.browser.ts
index bb52d83c1910..94bb48bb91a8 100644
--- a/clients/client-sso-admin/runtimeConfig.browser.ts
+++ b/clients/client-sso-admin/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SSOAdminClientConfig) => {
+export const getRuntimeConfig = (config: SSOAdminClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-sso-admin/runtimeConfig.native.ts b/clients/client-sso-admin/runtimeConfig.native.ts
index b4c213747458..d1e64ac29c3e 100644
--- a/clients/client-sso-admin/runtimeConfig.native.ts
+++ b/clients/client-sso-admin/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SSOAdminClientConfig) => {
+export const getRuntimeConfig = (config: SSOAdminClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-sso-admin/runtimeConfig.shared.ts b/clients/client-sso-admin/runtimeConfig.shared.ts
index 5e9686124986..47eeed1d2584 100644
--- a/clients/client-sso-admin/runtimeConfig.shared.ts
+++ b/clients/client-sso-admin/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { SSOAdminClientConfig } from "./SSOAdminClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SSOAdminClientConfig) => ({
+export const getRuntimeConfig = (config: SSOAdminClientConfig = {}) => ({
   apiVersion: "2020-07-20",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-sso-admin/runtimeConfig.ts b/clients/client-sso-admin/runtimeConfig.ts
index 1f7c734f1674..478279f919cc 100644
--- a/clients/client-sso-admin/runtimeConfig.ts
+++ b/clients/client-sso-admin/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SSOAdminClientConfig) => {
+export const getRuntimeConfig = (config: SSOAdminClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-sso-oidc/runtimeConfig.browser.ts b/clients/client-sso-oidc/runtimeConfig.browser.ts
index 7be6353d8f60..a48806498aad 100644
--- a/clients/client-sso-oidc/runtimeConfig.browser.ts
+++ b/clients/client-sso-oidc/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SSOOIDCClientConfig) => {
+export const getRuntimeConfig = (config: SSOOIDCClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-sso-oidc/runtimeConfig.native.ts b/clients/client-sso-oidc/runtimeConfig.native.ts
index 7a5350f947a0..28da453b87aa 100644
--- a/clients/client-sso-oidc/runtimeConfig.native.ts
+++ b/clients/client-sso-oidc/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SSOOIDCClientConfig) => {
+export const getRuntimeConfig = (config: SSOOIDCClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-sso-oidc/runtimeConfig.shared.ts b/clients/client-sso-oidc/runtimeConfig.shared.ts
index b3829f8c8a5b..2e0df1cb2708 100644
--- a/clients/client-sso-oidc/runtimeConfig.shared.ts
+++ b/clients/client-sso-oidc/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { SSOOIDCClientConfig } from "./SSOOIDCClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SSOOIDCClientConfig) => ({
+export const getRuntimeConfig = (config: SSOOIDCClientConfig = {}) => ({
   apiVersion: "2019-06-10",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-sso-oidc/runtimeConfig.ts b/clients/client-sso-oidc/runtimeConfig.ts
index 49ae653c9b53..742ada48d6a7 100644
--- a/clients/client-sso-oidc/runtimeConfig.ts
+++ b/clients/client-sso-oidc/runtimeConfig.ts
@@ -15,7 +15,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SSOOIDCClientConfig) => {
+export const getRuntimeConfig = (config: SSOOIDCClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-sso/runtimeConfig.browser.ts b/clients/client-sso/runtimeConfig.browser.ts
index e8612cdea7f4..841b85874b08 100644
--- a/clients/client-sso/runtimeConfig.browser.ts
+++ b/clients/client-sso/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SSOClientConfig) => {
+export const getRuntimeConfig = (config: SSOClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-sso/runtimeConfig.native.ts b/clients/client-sso/runtimeConfig.native.ts
index 856d06c34ed1..db91377484c8 100644
--- a/clients/client-sso/runtimeConfig.native.ts
+++ b/clients/client-sso/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SSOClientConfig) => {
+export const getRuntimeConfig = (config: SSOClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-sso/runtimeConfig.shared.ts b/clients/client-sso/runtimeConfig.shared.ts
index b4d8b853c2fe..3c6589bb6cf5 100644
--- a/clients/client-sso/runtimeConfig.shared.ts
+++ b/clients/client-sso/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { SSOClientConfig } from "./SSOClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SSOClientConfig) => ({
+export const getRuntimeConfig = (config: SSOClientConfig = {}) => ({
   apiVersion: "2019-06-10",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-sso/runtimeConfig.ts b/clients/client-sso/runtimeConfig.ts
index de0259d129a5..0bc909196100 100644
--- a/clients/client-sso/runtimeConfig.ts
+++ b/clients/client-sso/runtimeConfig.ts
@@ -15,7 +15,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SSOClientConfig) => {
+export const getRuntimeConfig = (config: SSOClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-storage-gateway/runtimeConfig.browser.ts b/clients/client-storage-gateway/runtimeConfig.browser.ts
index 532f24e01383..7cf8b1362c43 100644
--- a/clients/client-storage-gateway/runtimeConfig.browser.ts
+++ b/clients/client-storage-gateway/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: StorageGatewayClientConfig) => {
+export const getRuntimeConfig = (config: StorageGatewayClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-storage-gateway/runtimeConfig.native.ts b/clients/client-storage-gateway/runtimeConfig.native.ts
index fff0573e27ad..11634634ba98 100644
--- a/clients/client-storage-gateway/runtimeConfig.native.ts
+++ b/clients/client-storage-gateway/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: StorageGatewayClientConfig) => {
+export const getRuntimeConfig = (config: StorageGatewayClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-storage-gateway/runtimeConfig.shared.ts b/clients/client-storage-gateway/runtimeConfig.shared.ts
index 6b6f838e8970..66c4882f67a5 100644
--- a/clients/client-storage-gateway/runtimeConfig.shared.ts
+++ b/clients/client-storage-gateway/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { StorageGatewayClientConfig } from "./StorageGatewayClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: StorageGatewayClientConfig) => ({
+export const getRuntimeConfig = (config: StorageGatewayClientConfig = {}) => ({
   apiVersion: "2013-06-30",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-storage-gateway/runtimeConfig.ts b/clients/client-storage-gateway/runtimeConfig.ts
index 196084b2e384..ff1ab248e123 100644
--- a/clients/client-storage-gateway/runtimeConfig.ts
+++ b/clients/client-storage-gateway/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: StorageGatewayClientConfig) => {
+export const getRuntimeConfig = (config: StorageGatewayClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-sts/runtimeConfig.browser.ts b/clients/client-sts/runtimeConfig.browser.ts
index 40404e0e3c6d..6d3a4e091839 100644
--- a/clients/client-sts/runtimeConfig.browser.ts
+++ b/clients/client-sts/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: STSClientConfig) => {
+export const getRuntimeConfig = (config: STSClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-sts/runtimeConfig.native.ts b/clients/client-sts/runtimeConfig.native.ts
index 7bc8be08f35c..283366e96fb0 100644
--- a/clients/client-sts/runtimeConfig.native.ts
+++ b/clients/client-sts/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: STSClientConfig) => {
+export const getRuntimeConfig = (config: STSClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-sts/runtimeConfig.shared.ts b/clients/client-sts/runtimeConfig.shared.ts
index 14c6ba0e6bf4..0c3f2de534ad 100644
--- a/clients/client-sts/runtimeConfig.shared.ts
+++ b/clients/client-sts/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { STSClientConfig } from "./STSClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: STSClientConfig) => ({
+export const getRuntimeConfig = (config: STSClientConfig = {}) => ({
   apiVersion: "2011-06-15",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-sts/runtimeConfig.ts b/clients/client-sts/runtimeConfig.ts
index 65a5b71e5a10..a49ce81e6c5d 100644
--- a/clients/client-sts/runtimeConfig.ts
+++ b/clients/client-sts/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: STSClientConfig) => {
+export const getRuntimeConfig = (config: STSClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-support/runtimeConfig.browser.ts b/clients/client-support/runtimeConfig.browser.ts
index 61c69502c46f..28f779e0a202 100644
--- a/clients/client-support/runtimeConfig.browser.ts
+++ b/clients/client-support/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SupportClientConfig) => {
+export const getRuntimeConfig = (config: SupportClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-support/runtimeConfig.native.ts b/clients/client-support/runtimeConfig.native.ts
index a36ac5bb1368..9bd9dc21becd 100644
--- a/clients/client-support/runtimeConfig.native.ts
+++ b/clients/client-support/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SupportClientConfig) => {
+export const getRuntimeConfig = (config: SupportClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-support/runtimeConfig.shared.ts b/clients/client-support/runtimeConfig.shared.ts
index faf5a2f3ec8f..793c31f8cbc0 100644
--- a/clients/client-support/runtimeConfig.shared.ts
+++ b/clients/client-support/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { SupportClientConfig } from "./SupportClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SupportClientConfig) => ({
+export const getRuntimeConfig = (config: SupportClientConfig = {}) => ({
   apiVersion: "2013-04-15",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-support/runtimeConfig.ts b/clients/client-support/runtimeConfig.ts
index d0202fc742b2..14fdcf6d8da1 100644
--- a/clients/client-support/runtimeConfig.ts
+++ b/clients/client-support/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SupportClientConfig) => {
+export const getRuntimeConfig = (config: SupportClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-swf/runtimeConfig.browser.ts b/clients/client-swf/runtimeConfig.browser.ts
index 46b9d079d6b5..0603078b25fb 100644
--- a/clients/client-swf/runtimeConfig.browser.ts
+++ b/clients/client-swf/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SWFClientConfig) => {
+export const getRuntimeConfig = (config: SWFClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-swf/runtimeConfig.native.ts b/clients/client-swf/runtimeConfig.native.ts
index 84b9fe66a718..08f255017fe1 100644
--- a/clients/client-swf/runtimeConfig.native.ts
+++ b/clients/client-swf/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SWFClientConfig) => {
+export const getRuntimeConfig = (config: SWFClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-swf/runtimeConfig.shared.ts b/clients/client-swf/runtimeConfig.shared.ts
index 77dcf6b234d2..9429d57c6059 100644
--- a/clients/client-swf/runtimeConfig.shared.ts
+++ b/clients/client-swf/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { SWFClientConfig } from "./SWFClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SWFClientConfig) => ({
+export const getRuntimeConfig = (config: SWFClientConfig = {}) => ({
   apiVersion: "2012-01-25",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-swf/runtimeConfig.ts b/clients/client-swf/runtimeConfig.ts
index 5e5ade5afecf..cfb23abf4b16 100644
--- a/clients/client-swf/runtimeConfig.ts
+++ b/clients/client-swf/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SWFClientConfig) => {
+export const getRuntimeConfig = (config: SWFClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-synthetics/runtimeConfig.browser.ts b/clients/client-synthetics/runtimeConfig.browser.ts
index 5698baff4ace..a2b179961f6e 100644
--- a/clients/client-synthetics/runtimeConfig.browser.ts
+++ b/clients/client-synthetics/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SyntheticsClientConfig) => {
+export const getRuntimeConfig = (config: SyntheticsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-synthetics/runtimeConfig.native.ts b/clients/client-synthetics/runtimeConfig.native.ts
index 0e673e457854..5c2a9146a969 100644
--- a/clients/client-synthetics/runtimeConfig.native.ts
+++ b/clients/client-synthetics/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SyntheticsClientConfig) => {
+export const getRuntimeConfig = (config: SyntheticsClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-synthetics/runtimeConfig.shared.ts b/clients/client-synthetics/runtimeConfig.shared.ts
index 785a0b1571f0..e6857d498a17 100644
--- a/clients/client-synthetics/runtimeConfig.shared.ts
+++ b/clients/client-synthetics/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { SyntheticsClientConfig } from "./SyntheticsClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SyntheticsClientConfig) => ({
+export const getRuntimeConfig = (config: SyntheticsClientConfig = {}) => ({
   apiVersion: "2017-10-11",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-synthetics/runtimeConfig.ts b/clients/client-synthetics/runtimeConfig.ts
index 877932fb5593..8df46dd84d10 100644
--- a/clients/client-synthetics/runtimeConfig.ts
+++ b/clients/client-synthetics/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: SyntheticsClientConfig) => {
+export const getRuntimeConfig = (config: SyntheticsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-textract/runtimeConfig.browser.ts b/clients/client-textract/runtimeConfig.browser.ts
index 3435ef50150c..cb3fec793f01 100644
--- a/clients/client-textract/runtimeConfig.browser.ts
+++ b/clients/client-textract/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: TextractClientConfig) => {
+export const getRuntimeConfig = (config: TextractClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-textract/runtimeConfig.native.ts b/clients/client-textract/runtimeConfig.native.ts
index 4426daf1e7d0..059fa1638aba 100644
--- a/clients/client-textract/runtimeConfig.native.ts
+++ b/clients/client-textract/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: TextractClientConfig) => {
+export const getRuntimeConfig = (config: TextractClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-textract/runtimeConfig.shared.ts b/clients/client-textract/runtimeConfig.shared.ts
index 4e61159d2c0e..895d2d00a6fa 100644
--- a/clients/client-textract/runtimeConfig.shared.ts
+++ b/clients/client-textract/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { TextractClientConfig } from "./TextractClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: TextractClientConfig) => ({
+export const getRuntimeConfig = (config: TextractClientConfig = {}) => ({
   apiVersion: "2018-06-27",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-textract/runtimeConfig.ts b/clients/client-textract/runtimeConfig.ts
index a5a3fb162e4f..5dd599913b17 100644
--- a/clients/client-textract/runtimeConfig.ts
+++ b/clients/client-textract/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: TextractClientConfig) => {
+export const getRuntimeConfig = (config: TextractClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-timestream-query/runtimeConfig.browser.ts b/clients/client-timestream-query/runtimeConfig.browser.ts
index 8f96f81b3c33..bc826060813d 100644
--- a/clients/client-timestream-query/runtimeConfig.browser.ts
+++ b/clients/client-timestream-query/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: TimestreamQueryClientConfig) => {
+export const getRuntimeConfig = (config: TimestreamQueryClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-timestream-query/runtimeConfig.native.ts b/clients/client-timestream-query/runtimeConfig.native.ts
index e1c1d8a02fab..03a686c5d8be 100644
--- a/clients/client-timestream-query/runtimeConfig.native.ts
+++ b/clients/client-timestream-query/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: TimestreamQueryClientConfig) => {
+export const getRuntimeConfig = (config: TimestreamQueryClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-timestream-query/runtimeConfig.shared.ts b/clients/client-timestream-query/runtimeConfig.shared.ts
index e798be9fccdb..5147f79afc24 100644
--- a/clients/client-timestream-query/runtimeConfig.shared.ts
+++ b/clients/client-timestream-query/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { TimestreamQueryClientConfig } from "./TimestreamQueryClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: TimestreamQueryClientConfig) => ({
+export const getRuntimeConfig = (config: TimestreamQueryClientConfig = {}) => ({
   apiVersion: "2018-11-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-timestream-query/runtimeConfig.ts b/clients/client-timestream-query/runtimeConfig.ts
index 3da5c5d99498..50c2f0328ab5 100644
--- a/clients/client-timestream-query/runtimeConfig.ts
+++ b/clients/client-timestream-query/runtimeConfig.ts
@@ -18,7 +18,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: TimestreamQueryClientConfig) => {
+export const getRuntimeConfig = (config: TimestreamQueryClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-timestream-write/runtimeConfig.browser.ts b/clients/client-timestream-write/runtimeConfig.browser.ts
index 04010b3aedfb..d3c5668dcd6a 100644
--- a/clients/client-timestream-write/runtimeConfig.browser.ts
+++ b/clients/client-timestream-write/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: TimestreamWriteClientConfig) => {
+export const getRuntimeConfig = (config: TimestreamWriteClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-timestream-write/runtimeConfig.native.ts b/clients/client-timestream-write/runtimeConfig.native.ts
index 74b3aad59f84..34048b120d8a 100644
--- a/clients/client-timestream-write/runtimeConfig.native.ts
+++ b/clients/client-timestream-write/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: TimestreamWriteClientConfig) => {
+export const getRuntimeConfig = (config: TimestreamWriteClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-timestream-write/runtimeConfig.shared.ts b/clients/client-timestream-write/runtimeConfig.shared.ts
index 5fc1f5a6964a..2491428ece26 100644
--- a/clients/client-timestream-write/runtimeConfig.shared.ts
+++ b/clients/client-timestream-write/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { TimestreamWriteClientConfig } from "./TimestreamWriteClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: TimestreamWriteClientConfig) => ({
+export const getRuntimeConfig = (config: TimestreamWriteClientConfig = {}) => ({
   apiVersion: "2018-11-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-timestream-write/runtimeConfig.ts b/clients/client-timestream-write/runtimeConfig.ts
index 79b333bb3f9a..f6492ebe4516 100644
--- a/clients/client-timestream-write/runtimeConfig.ts
+++ b/clients/client-timestream-write/runtimeConfig.ts
@@ -18,7 +18,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: TimestreamWriteClientConfig) => {
+export const getRuntimeConfig = (config: TimestreamWriteClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-transcribe-streaming/runtimeConfig.browser.ts b/clients/client-transcribe-streaming/runtimeConfig.browser.ts
index eba17d97bb2c..b7cf7c8d6b81 100644
--- a/clients/client-transcribe-streaming/runtimeConfig.browser.ts
+++ b/clients/client-transcribe-streaming/runtimeConfig.browser.ts
@@ -16,7 +16,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: TranscribeStreamingClientConfig) => {
+export const getRuntimeConfig = (config: TranscribeStreamingClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-transcribe-streaming/runtimeConfig.native.ts b/clients/client-transcribe-streaming/runtimeConfig.native.ts
index e736bbfbd126..9279f1a07e26 100644
--- a/clients/client-transcribe-streaming/runtimeConfig.native.ts
+++ b/clients/client-transcribe-streaming/runtimeConfig.native.ts
@@ -6,7 +6,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: TranscribeStreamingClientConfig) => {
+export const getRuntimeConfig = (config: TranscribeStreamingClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-transcribe-streaming/runtimeConfig.shared.ts b/clients/client-transcribe-streaming/runtimeConfig.shared.ts
index 7f210dd95861..a5d539deec44 100644
--- a/clients/client-transcribe-streaming/runtimeConfig.shared.ts
+++ b/clients/client-transcribe-streaming/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { TranscribeStreamingClientConfig } from "./TranscribeStreamingClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: TranscribeStreamingClientConfig) => ({
+export const getRuntimeConfig = (config: TranscribeStreamingClientConfig = {}) => ({
   apiVersion: "2017-10-26",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-transcribe-streaming/runtimeConfig.ts b/clients/client-transcribe-streaming/runtimeConfig.ts
index 58279df7806e..fa488385000f 100644
--- a/clients/client-transcribe-streaming/runtimeConfig.ts
+++ b/clients/client-transcribe-streaming/runtimeConfig.ts
@@ -19,7 +19,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: TranscribeStreamingClientConfig) => {
+export const getRuntimeConfig = (config: TranscribeStreamingClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-transcribe/runtimeConfig.browser.ts b/clients/client-transcribe/runtimeConfig.browser.ts
index 285c18f0f779..ced95f9178f5 100644
--- a/clients/client-transcribe/runtimeConfig.browser.ts
+++ b/clients/client-transcribe/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: TranscribeClientConfig) => {
+export const getRuntimeConfig = (config: TranscribeClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-transcribe/runtimeConfig.native.ts b/clients/client-transcribe/runtimeConfig.native.ts
index db617994c305..8ec6e8a285f8 100644
--- a/clients/client-transcribe/runtimeConfig.native.ts
+++ b/clients/client-transcribe/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: TranscribeClientConfig) => {
+export const getRuntimeConfig = (config: TranscribeClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-transcribe/runtimeConfig.shared.ts b/clients/client-transcribe/runtimeConfig.shared.ts
index 14f75f01a029..6dbcea1c7c58 100644
--- a/clients/client-transcribe/runtimeConfig.shared.ts
+++ b/clients/client-transcribe/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { TranscribeClientConfig } from "./TranscribeClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: TranscribeClientConfig) => ({
+export const getRuntimeConfig = (config: TranscribeClientConfig = {}) => ({
   apiVersion: "2017-10-26",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-transcribe/runtimeConfig.ts b/clients/client-transcribe/runtimeConfig.ts
index 6d00cf21f47f..bdd7c59ae80b 100644
--- a/clients/client-transcribe/runtimeConfig.ts
+++ b/clients/client-transcribe/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: TranscribeClientConfig) => {
+export const getRuntimeConfig = (config: TranscribeClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-transfer/runtimeConfig.browser.ts b/clients/client-transfer/runtimeConfig.browser.ts
index 9aab0dd1646a..663ebbe78f1a 100644
--- a/clients/client-transfer/runtimeConfig.browser.ts
+++ b/clients/client-transfer/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: TransferClientConfig) => {
+export const getRuntimeConfig = (config: TransferClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-transfer/runtimeConfig.native.ts b/clients/client-transfer/runtimeConfig.native.ts
index febeac64d926..19efb6ba147a 100644
--- a/clients/client-transfer/runtimeConfig.native.ts
+++ b/clients/client-transfer/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: TransferClientConfig) => {
+export const getRuntimeConfig = (config: TransferClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-transfer/runtimeConfig.shared.ts b/clients/client-transfer/runtimeConfig.shared.ts
index 81f21593a83b..9af847515252 100644
--- a/clients/client-transfer/runtimeConfig.shared.ts
+++ b/clients/client-transfer/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { TransferClientConfig } from "./TransferClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: TransferClientConfig) => ({
+export const getRuntimeConfig = (config: TransferClientConfig = {}) => ({
   apiVersion: "2018-11-05",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-transfer/runtimeConfig.ts b/clients/client-transfer/runtimeConfig.ts
index 97ad03ff5b8b..7cdbdd2ccac2 100644
--- a/clients/client-transfer/runtimeConfig.ts
+++ b/clients/client-transfer/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: TransferClientConfig) => {
+export const getRuntimeConfig = (config: TransferClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-translate/runtimeConfig.browser.ts b/clients/client-translate/runtimeConfig.browser.ts
index 9a19b9291645..ff8667c66841 100644
--- a/clients/client-translate/runtimeConfig.browser.ts
+++ b/clients/client-translate/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: TranslateClientConfig) => {
+export const getRuntimeConfig = (config: TranslateClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-translate/runtimeConfig.native.ts b/clients/client-translate/runtimeConfig.native.ts
index ed240daba5e1..dec133eca9db 100644
--- a/clients/client-translate/runtimeConfig.native.ts
+++ b/clients/client-translate/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: TranslateClientConfig) => {
+export const getRuntimeConfig = (config: TranslateClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-translate/runtimeConfig.shared.ts b/clients/client-translate/runtimeConfig.shared.ts
index 84193d8988d5..4f7cb4cec032 100644
--- a/clients/client-translate/runtimeConfig.shared.ts
+++ b/clients/client-translate/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { TranslateClientConfig } from "./TranslateClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: TranslateClientConfig) => ({
+export const getRuntimeConfig = (config: TranslateClientConfig = {}) => ({
   apiVersion: "2017-07-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-translate/runtimeConfig.ts b/clients/client-translate/runtimeConfig.ts
index 3c1214034640..040864b8933f 100644
--- a/clients/client-translate/runtimeConfig.ts
+++ b/clients/client-translate/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: TranslateClientConfig) => {
+export const getRuntimeConfig = (config: TranslateClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-waf-regional/runtimeConfig.browser.ts b/clients/client-waf-regional/runtimeConfig.browser.ts
index 9450c037fa6a..4981a2ee8626 100644
--- a/clients/client-waf-regional/runtimeConfig.browser.ts
+++ b/clients/client-waf-regional/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WAFRegionalClientConfig) => {
+export const getRuntimeConfig = (config: WAFRegionalClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-waf-regional/runtimeConfig.native.ts b/clients/client-waf-regional/runtimeConfig.native.ts
index ba2d3dd880cd..a4fe7c707f43 100644
--- a/clients/client-waf-regional/runtimeConfig.native.ts
+++ b/clients/client-waf-regional/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WAFRegionalClientConfig) => {
+export const getRuntimeConfig = (config: WAFRegionalClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-waf-regional/runtimeConfig.shared.ts b/clients/client-waf-regional/runtimeConfig.shared.ts
index 73afd7903ca3..fa4e55929945 100644
--- a/clients/client-waf-regional/runtimeConfig.shared.ts
+++ b/clients/client-waf-regional/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { WAFRegionalClientConfig } from "./WAFRegionalClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WAFRegionalClientConfig) => ({
+export const getRuntimeConfig = (config: WAFRegionalClientConfig = {}) => ({
   apiVersion: "2016-11-28",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-waf-regional/runtimeConfig.ts b/clients/client-waf-regional/runtimeConfig.ts
index 1c9708073499..db8e6e40d651 100644
--- a/clients/client-waf-regional/runtimeConfig.ts
+++ b/clients/client-waf-regional/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WAFRegionalClientConfig) => {
+export const getRuntimeConfig = (config: WAFRegionalClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-waf/runtimeConfig.browser.ts b/clients/client-waf/runtimeConfig.browser.ts
index e35b95a34526..4a2af7e03cf8 100644
--- a/clients/client-waf/runtimeConfig.browser.ts
+++ b/clients/client-waf/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WAFClientConfig) => {
+export const getRuntimeConfig = (config: WAFClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-waf/runtimeConfig.native.ts b/clients/client-waf/runtimeConfig.native.ts
index 28bc340fc9f7..9abc2bef05a4 100644
--- a/clients/client-waf/runtimeConfig.native.ts
+++ b/clients/client-waf/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WAFClientConfig) => {
+export const getRuntimeConfig = (config: WAFClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-waf/runtimeConfig.shared.ts b/clients/client-waf/runtimeConfig.shared.ts
index 4b68edfd526c..2a0fc2b7295e 100644
--- a/clients/client-waf/runtimeConfig.shared.ts
+++ b/clients/client-waf/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { WAFClientConfig } from "./WAFClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WAFClientConfig) => ({
+export const getRuntimeConfig = (config: WAFClientConfig = {}) => ({
   apiVersion: "2015-08-24",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-waf/runtimeConfig.ts b/clients/client-waf/runtimeConfig.ts
index de6225fe8202..b822342216ad 100644
--- a/clients/client-waf/runtimeConfig.ts
+++ b/clients/client-waf/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WAFClientConfig) => {
+export const getRuntimeConfig = (config: WAFClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-wafv2/runtimeConfig.browser.ts b/clients/client-wafv2/runtimeConfig.browser.ts
index 2783915f551f..90d3904dfdc1 100644
--- a/clients/client-wafv2/runtimeConfig.browser.ts
+++ b/clients/client-wafv2/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WAFV2ClientConfig) => {
+export const getRuntimeConfig = (config: WAFV2ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-wafv2/runtimeConfig.native.ts b/clients/client-wafv2/runtimeConfig.native.ts
index 8a353e24fa5e..6511c98c624c 100644
--- a/clients/client-wafv2/runtimeConfig.native.ts
+++ b/clients/client-wafv2/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WAFV2ClientConfig) => {
+export const getRuntimeConfig = (config: WAFV2ClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-wafv2/runtimeConfig.shared.ts b/clients/client-wafv2/runtimeConfig.shared.ts
index bf895f24b387..9b98288be1da 100644
--- a/clients/client-wafv2/runtimeConfig.shared.ts
+++ b/clients/client-wafv2/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { WAFV2ClientConfig } from "./WAFV2Client";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WAFV2ClientConfig) => ({
+export const getRuntimeConfig = (config: WAFV2ClientConfig = {}) => ({
   apiVersion: "2019-07-29",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-wafv2/runtimeConfig.ts b/clients/client-wafv2/runtimeConfig.ts
index 6cf9ce9ba868..1af6d4968d38 100644
--- a/clients/client-wafv2/runtimeConfig.ts
+++ b/clients/client-wafv2/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WAFV2ClientConfig) => {
+export const getRuntimeConfig = (config: WAFV2ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-wellarchitected/runtimeConfig.browser.ts b/clients/client-wellarchitected/runtimeConfig.browser.ts
index 3f530a2dfda6..acb8270e825e 100644
--- a/clients/client-wellarchitected/runtimeConfig.browser.ts
+++ b/clients/client-wellarchitected/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WellArchitectedClientConfig) => {
+export const getRuntimeConfig = (config: WellArchitectedClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-wellarchitected/runtimeConfig.native.ts b/clients/client-wellarchitected/runtimeConfig.native.ts
index 98f5444be901..3b5ec395d79c 100644
--- a/clients/client-wellarchitected/runtimeConfig.native.ts
+++ b/clients/client-wellarchitected/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WellArchitectedClientConfig) => {
+export const getRuntimeConfig = (config: WellArchitectedClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-wellarchitected/runtimeConfig.shared.ts b/clients/client-wellarchitected/runtimeConfig.shared.ts
index e76acfdeeb88..bc2dc0c8a92a 100644
--- a/clients/client-wellarchitected/runtimeConfig.shared.ts
+++ b/clients/client-wellarchitected/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { WellArchitectedClientConfig } from "./WellArchitectedClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WellArchitectedClientConfig) => ({
+export const getRuntimeConfig = (config: WellArchitectedClientConfig = {}) => ({
   apiVersion: "2020-03-31",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-wellarchitected/runtimeConfig.ts b/clients/client-wellarchitected/runtimeConfig.ts
index ed72722951f6..bf447978c2ab 100644
--- a/clients/client-wellarchitected/runtimeConfig.ts
+++ b/clients/client-wellarchitected/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WellArchitectedClientConfig) => {
+export const getRuntimeConfig = (config: WellArchitectedClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-workdocs/runtimeConfig.browser.ts b/clients/client-workdocs/runtimeConfig.browser.ts
index bdadfda0a082..d89b8781ca26 100644
--- a/clients/client-workdocs/runtimeConfig.browser.ts
+++ b/clients/client-workdocs/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WorkDocsClientConfig) => {
+export const getRuntimeConfig = (config: WorkDocsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-workdocs/runtimeConfig.native.ts b/clients/client-workdocs/runtimeConfig.native.ts
index 165de5494341..e644a9843d34 100644
--- a/clients/client-workdocs/runtimeConfig.native.ts
+++ b/clients/client-workdocs/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WorkDocsClientConfig) => {
+export const getRuntimeConfig = (config: WorkDocsClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-workdocs/runtimeConfig.shared.ts b/clients/client-workdocs/runtimeConfig.shared.ts
index 0e5273436ed9..d756e25a40c3 100644
--- a/clients/client-workdocs/runtimeConfig.shared.ts
+++ b/clients/client-workdocs/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { WorkDocsClientConfig } from "./WorkDocsClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WorkDocsClientConfig) => ({
+export const getRuntimeConfig = (config: WorkDocsClientConfig = {}) => ({
   apiVersion: "2016-05-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-workdocs/runtimeConfig.ts b/clients/client-workdocs/runtimeConfig.ts
index 926fe1f3a45f..e96b854c62eb 100644
--- a/clients/client-workdocs/runtimeConfig.ts
+++ b/clients/client-workdocs/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WorkDocsClientConfig) => {
+export const getRuntimeConfig = (config: WorkDocsClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-worklink/runtimeConfig.browser.ts b/clients/client-worklink/runtimeConfig.browser.ts
index b48b68d83b93..118e8c44b04b 100644
--- a/clients/client-worklink/runtimeConfig.browser.ts
+++ b/clients/client-worklink/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WorkLinkClientConfig) => {
+export const getRuntimeConfig = (config: WorkLinkClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-worklink/runtimeConfig.native.ts b/clients/client-worklink/runtimeConfig.native.ts
index d0494982981e..a9578fef6c15 100644
--- a/clients/client-worklink/runtimeConfig.native.ts
+++ b/clients/client-worklink/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WorkLinkClientConfig) => {
+export const getRuntimeConfig = (config: WorkLinkClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-worklink/runtimeConfig.shared.ts b/clients/client-worklink/runtimeConfig.shared.ts
index ef47be7e3d06..8469ac43aa0f 100644
--- a/clients/client-worklink/runtimeConfig.shared.ts
+++ b/clients/client-worklink/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { WorkLinkClientConfig } from "./WorkLinkClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WorkLinkClientConfig) => ({
+export const getRuntimeConfig = (config: WorkLinkClientConfig = {}) => ({
   apiVersion: "2018-09-25",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-worklink/runtimeConfig.ts b/clients/client-worklink/runtimeConfig.ts
index 3542ed9d4c04..b099324ae9d3 100644
--- a/clients/client-worklink/runtimeConfig.ts
+++ b/clients/client-worklink/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WorkLinkClientConfig) => {
+export const getRuntimeConfig = (config: WorkLinkClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-workmail/runtimeConfig.browser.ts b/clients/client-workmail/runtimeConfig.browser.ts
index 58d72407a58b..ab60dc865756 100644
--- a/clients/client-workmail/runtimeConfig.browser.ts
+++ b/clients/client-workmail/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WorkMailClientConfig) => {
+export const getRuntimeConfig = (config: WorkMailClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-workmail/runtimeConfig.native.ts b/clients/client-workmail/runtimeConfig.native.ts
index de230e2a5793..972ab0ef47e1 100644
--- a/clients/client-workmail/runtimeConfig.native.ts
+++ b/clients/client-workmail/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WorkMailClientConfig) => {
+export const getRuntimeConfig = (config: WorkMailClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-workmail/runtimeConfig.shared.ts b/clients/client-workmail/runtimeConfig.shared.ts
index 6225607d715f..5858b23e7d16 100644
--- a/clients/client-workmail/runtimeConfig.shared.ts
+++ b/clients/client-workmail/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { WorkMailClientConfig } from "./WorkMailClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WorkMailClientConfig) => ({
+export const getRuntimeConfig = (config: WorkMailClientConfig = {}) => ({
   apiVersion: "2017-10-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-workmail/runtimeConfig.ts b/clients/client-workmail/runtimeConfig.ts
index 4e15648aaabc..c7ee6353c324 100644
--- a/clients/client-workmail/runtimeConfig.ts
+++ b/clients/client-workmail/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WorkMailClientConfig) => {
+export const getRuntimeConfig = (config: WorkMailClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-workmailmessageflow/runtimeConfig.browser.ts b/clients/client-workmailmessageflow/runtimeConfig.browser.ts
index 41ef2f768fe5..152ba0ff5279 100644
--- a/clients/client-workmailmessageflow/runtimeConfig.browser.ts
+++ b/clients/client-workmailmessageflow/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WorkMailMessageFlowClientConfig) => {
+export const getRuntimeConfig = (config: WorkMailMessageFlowClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-workmailmessageflow/runtimeConfig.native.ts b/clients/client-workmailmessageflow/runtimeConfig.native.ts
index 05d248127b45..1ab1949ace01 100644
--- a/clients/client-workmailmessageflow/runtimeConfig.native.ts
+++ b/clients/client-workmailmessageflow/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WorkMailMessageFlowClientConfig) => {
+export const getRuntimeConfig = (config: WorkMailMessageFlowClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-workmailmessageflow/runtimeConfig.shared.ts b/clients/client-workmailmessageflow/runtimeConfig.shared.ts
index afd6df75ff59..bd90a7476274 100644
--- a/clients/client-workmailmessageflow/runtimeConfig.shared.ts
+++ b/clients/client-workmailmessageflow/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { WorkMailMessageFlowClientConfig } from "./WorkMailMessageFlowClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WorkMailMessageFlowClientConfig) => ({
+export const getRuntimeConfig = (config: WorkMailMessageFlowClientConfig = {}) => ({
   apiVersion: "2019-05-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-workmailmessageflow/runtimeConfig.ts b/clients/client-workmailmessageflow/runtimeConfig.ts
index d179e0228887..447c16af73c7 100644
--- a/clients/client-workmailmessageflow/runtimeConfig.ts
+++ b/clients/client-workmailmessageflow/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WorkMailMessageFlowClientConfig) => {
+export const getRuntimeConfig = (config: WorkMailMessageFlowClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-workspaces/runtimeConfig.browser.ts b/clients/client-workspaces/runtimeConfig.browser.ts
index a65667d31a54..5be2e93f2094 100644
--- a/clients/client-workspaces/runtimeConfig.browser.ts
+++ b/clients/client-workspaces/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WorkSpacesClientConfig) => {
+export const getRuntimeConfig = (config: WorkSpacesClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-workspaces/runtimeConfig.native.ts b/clients/client-workspaces/runtimeConfig.native.ts
index c67830ae4a2f..a564e018d0ae 100644
--- a/clients/client-workspaces/runtimeConfig.native.ts
+++ b/clients/client-workspaces/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WorkSpacesClientConfig) => {
+export const getRuntimeConfig = (config: WorkSpacesClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-workspaces/runtimeConfig.shared.ts b/clients/client-workspaces/runtimeConfig.shared.ts
index 920fabf5eaea..bf524ee25c46 100644
--- a/clients/client-workspaces/runtimeConfig.shared.ts
+++ b/clients/client-workspaces/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { WorkSpacesClientConfig } from "./WorkSpacesClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WorkSpacesClientConfig) => ({
+export const getRuntimeConfig = (config: WorkSpacesClientConfig = {}) => ({
   apiVersion: "2015-04-08",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-workspaces/runtimeConfig.ts b/clients/client-workspaces/runtimeConfig.ts
index b6f966238321..d4ee0f1806d5 100644
--- a/clients/client-workspaces/runtimeConfig.ts
+++ b/clients/client-workspaces/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: WorkSpacesClientConfig) => {
+export const getRuntimeConfig = (config: WorkSpacesClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-xray/runtimeConfig.browser.ts b/clients/client-xray/runtimeConfig.browser.ts
index bd583e7b6c64..ee3c3b31901a 100644
--- a/clients/client-xray/runtimeConfig.browser.ts
+++ b/clients/client-xray/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: XRayClientConfig) => {
+export const getRuntimeConfig = (config: XRayClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/clients/client-xray/runtimeConfig.native.ts b/clients/client-xray/runtimeConfig.native.ts
index 495c4b18b04f..3f2f54a27a2a 100644
--- a/clients/client-xray/runtimeConfig.native.ts
+++ b/clients/client-xray/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: XRayClientConfig) => {
+export const getRuntimeConfig = (config: XRayClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/clients/client-xray/runtimeConfig.shared.ts b/clients/client-xray/runtimeConfig.shared.ts
index 4bba2bbb8952..77526d65cf47 100644
--- a/clients/client-xray/runtimeConfig.shared.ts
+++ b/clients/client-xray/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { XRayClientConfig } from "./XRayClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: XRayClientConfig) => ({
+export const getRuntimeConfig = (config: XRayClientConfig = {}) => ({
   apiVersion: "2016-04-12",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/clients/client-xray/runtimeConfig.ts b/clients/client-xray/runtimeConfig.ts
index 57a098be9496..7387f476fca8 100644
--- a/clients/client-xray/runtimeConfig.ts
+++ b/clients/client-xray/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: XRayClientConfig) => {
+export const getRuntimeConfig = (config: XRayClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/protocol_tests/aws-ec2/runtimeConfig.browser.ts b/protocol_tests/aws-ec2/runtimeConfig.browser.ts
index bf9d886b56ef..0688f5c0c8fc 100644
--- a/protocol_tests/aws-ec2/runtimeConfig.browser.ts
+++ b/protocol_tests/aws-ec2/runtimeConfig.browser.ts
@@ -13,7 +13,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EC2ProtocolClientConfig) => {
+export const getRuntimeConfig = (config: EC2ProtocolClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/protocol_tests/aws-ec2/runtimeConfig.native.ts b/protocol_tests/aws-ec2/runtimeConfig.native.ts
index 59fabb634ffc..d34ba51229f6 100644
--- a/protocol_tests/aws-ec2/runtimeConfig.native.ts
+++ b/protocol_tests/aws-ec2/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EC2ProtocolClientConfig) => {
+export const getRuntimeConfig = (config: EC2ProtocolClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/protocol_tests/aws-ec2/runtimeConfig.shared.ts b/protocol_tests/aws-ec2/runtimeConfig.shared.ts
index e6edff2e1ed3..e43b6dc86e39 100644
--- a/protocol_tests/aws-ec2/runtimeConfig.shared.ts
+++ b/protocol_tests/aws-ec2/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { EC2ProtocolClientConfig } from "./EC2ProtocolClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EC2ProtocolClientConfig) => ({
+export const getRuntimeConfig = (config: EC2ProtocolClientConfig = {}) => ({
   apiVersion: "2020-01-08",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/protocol_tests/aws-ec2/runtimeConfig.ts b/protocol_tests/aws-ec2/runtimeConfig.ts
index 8c8b1087c1f2..fa0ac0ca1139 100644
--- a/protocol_tests/aws-ec2/runtimeConfig.ts
+++ b/protocol_tests/aws-ec2/runtimeConfig.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: EC2ProtocolClientConfig) => {
+export const getRuntimeConfig = (config: EC2ProtocolClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/protocol_tests/aws-json-10/runtimeConfig.browser.ts b/protocol_tests/aws-json-10/runtimeConfig.browser.ts
index de7158fae3f4..2df732b67484 100644
--- a/protocol_tests/aws-json-10/runtimeConfig.browser.ts
+++ b/protocol_tests/aws-json-10/runtimeConfig.browser.ts
@@ -13,7 +13,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: JSONRPC10ClientConfig) => {
+export const getRuntimeConfig = (config: JSONRPC10ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/protocol_tests/aws-json-10/runtimeConfig.native.ts b/protocol_tests/aws-json-10/runtimeConfig.native.ts
index 14da55f410de..ab4162b9af4d 100644
--- a/protocol_tests/aws-json-10/runtimeConfig.native.ts
+++ b/protocol_tests/aws-json-10/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: JSONRPC10ClientConfig) => {
+export const getRuntimeConfig = (config: JSONRPC10ClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/protocol_tests/aws-json-10/runtimeConfig.shared.ts b/protocol_tests/aws-json-10/runtimeConfig.shared.ts
index 150519c66526..c3cb374f31dc 100644
--- a/protocol_tests/aws-json-10/runtimeConfig.shared.ts
+++ b/protocol_tests/aws-json-10/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { JSONRPC10ClientConfig } from "./JSONRPC10Client";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: JSONRPC10ClientConfig) => ({
+export const getRuntimeConfig = (config: JSONRPC10ClientConfig = {}) => ({
   apiVersion: "2020-07-14",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/protocol_tests/aws-json-10/runtimeConfig.ts b/protocol_tests/aws-json-10/runtimeConfig.ts
index f564aae91f44..47e34f37f380 100644
--- a/protocol_tests/aws-json-10/runtimeConfig.ts
+++ b/protocol_tests/aws-json-10/runtimeConfig.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: JSONRPC10ClientConfig) => {
+export const getRuntimeConfig = (config: JSONRPC10ClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/protocol_tests/aws-json/runtimeConfig.browser.ts b/protocol_tests/aws-json/runtimeConfig.browser.ts
index e3596882e9b8..ea9173b36f82 100644
--- a/protocol_tests/aws-json/runtimeConfig.browser.ts
+++ b/protocol_tests/aws-json/runtimeConfig.browser.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: JsonProtocolClientConfig) => {
+export const getRuntimeConfig = (config: JsonProtocolClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/protocol_tests/aws-json/runtimeConfig.native.ts b/protocol_tests/aws-json/runtimeConfig.native.ts
index 29b0dfc4d655..5cea8f05b670 100644
--- a/protocol_tests/aws-json/runtimeConfig.native.ts
+++ b/protocol_tests/aws-json/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: JsonProtocolClientConfig) => {
+export const getRuntimeConfig = (config: JsonProtocolClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/protocol_tests/aws-json/runtimeConfig.shared.ts b/protocol_tests/aws-json/runtimeConfig.shared.ts
index 273795b696f9..1b024e21df43 100644
--- a/protocol_tests/aws-json/runtimeConfig.shared.ts
+++ b/protocol_tests/aws-json/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { JsonProtocolClientConfig } from "./JsonProtocolClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: JsonProtocolClientConfig) => ({
+export const getRuntimeConfig = (config: JsonProtocolClientConfig = {}) => ({
   apiVersion: "2018-01-01",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/protocol_tests/aws-json/runtimeConfig.ts b/protocol_tests/aws-json/runtimeConfig.ts
index 1c18134c4c47..5d8d1691680d 100644
--- a/protocol_tests/aws-json/runtimeConfig.ts
+++ b/protocol_tests/aws-json/runtimeConfig.ts
@@ -17,7 +17,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: JsonProtocolClientConfig) => {
+export const getRuntimeConfig = (config: JsonProtocolClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/protocol_tests/aws-query/runtimeConfig.browser.ts b/protocol_tests/aws-query/runtimeConfig.browser.ts
index bf2e9caa761b..ff9e4be08af7 100644
--- a/protocol_tests/aws-query/runtimeConfig.browser.ts
+++ b/protocol_tests/aws-query/runtimeConfig.browser.ts
@@ -13,7 +13,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: QueryProtocolClientConfig) => {
+export const getRuntimeConfig = (config: QueryProtocolClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/protocol_tests/aws-query/runtimeConfig.native.ts b/protocol_tests/aws-query/runtimeConfig.native.ts
index f2ad16dca456..0200e80860a2 100644
--- a/protocol_tests/aws-query/runtimeConfig.native.ts
+++ b/protocol_tests/aws-query/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: QueryProtocolClientConfig) => {
+export const getRuntimeConfig = (config: QueryProtocolClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/protocol_tests/aws-query/runtimeConfig.shared.ts b/protocol_tests/aws-query/runtimeConfig.shared.ts
index 86ac2fe07c66..d7315b5c25d9 100644
--- a/protocol_tests/aws-query/runtimeConfig.shared.ts
+++ b/protocol_tests/aws-query/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { QueryProtocolClientConfig } from "./QueryProtocolClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: QueryProtocolClientConfig) => ({
+export const getRuntimeConfig = (config: QueryProtocolClientConfig = {}) => ({
   apiVersion: "2020-01-08",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/protocol_tests/aws-query/runtimeConfig.ts b/protocol_tests/aws-query/runtimeConfig.ts
index afda48d9f09c..6e276a2d0209 100644
--- a/protocol_tests/aws-query/runtimeConfig.ts
+++ b/protocol_tests/aws-query/runtimeConfig.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: QueryProtocolClientConfig) => {
+export const getRuntimeConfig = (config: QueryProtocolClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/protocol_tests/aws-restjson/runtimeConfig.browser.ts b/protocol_tests/aws-restjson/runtimeConfig.browser.ts
index 7b8325c072a4..5fcbd11a0b85 100644
--- a/protocol_tests/aws-restjson/runtimeConfig.browser.ts
+++ b/protocol_tests/aws-restjson/runtimeConfig.browser.ts
@@ -13,7 +13,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RestJsonProtocolClientConfig) => {
+export const getRuntimeConfig = (config: RestJsonProtocolClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/protocol_tests/aws-restjson/runtimeConfig.native.ts b/protocol_tests/aws-restjson/runtimeConfig.native.ts
index d1e3ffd93f4a..64d08cc3695d 100644
--- a/protocol_tests/aws-restjson/runtimeConfig.native.ts
+++ b/protocol_tests/aws-restjson/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RestJsonProtocolClientConfig) => {
+export const getRuntimeConfig = (config: RestJsonProtocolClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/protocol_tests/aws-restjson/runtimeConfig.shared.ts b/protocol_tests/aws-restjson/runtimeConfig.shared.ts
index 98d03051adb9..4717ed3fe79e 100644
--- a/protocol_tests/aws-restjson/runtimeConfig.shared.ts
+++ b/protocol_tests/aws-restjson/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { RestJsonProtocolClientConfig } from "./RestJsonProtocolClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RestJsonProtocolClientConfig) => ({
+export const getRuntimeConfig = (config: RestJsonProtocolClientConfig = {}) => ({
   apiVersion: "2019-12-16",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/protocol_tests/aws-restjson/runtimeConfig.ts b/protocol_tests/aws-restjson/runtimeConfig.ts
index b7c082d17f31..d36fa88f3ba4 100644
--- a/protocol_tests/aws-restjson/runtimeConfig.ts
+++ b/protocol_tests/aws-restjson/runtimeConfig.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RestJsonProtocolClientConfig) => {
+export const getRuntimeConfig = (config: RestJsonProtocolClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/protocol_tests/aws-restxml/runtimeConfig.browser.ts b/protocol_tests/aws-restxml/runtimeConfig.browser.ts
index ba8197bcb581..534fccad032c 100644
--- a/protocol_tests/aws-restxml/runtimeConfig.browser.ts
+++ b/protocol_tests/aws-restxml/runtimeConfig.browser.ts
@@ -13,7 +13,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RestXmlProtocolClientConfig) => {
+export const getRuntimeConfig = (config: RestXmlProtocolClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,
diff --git a/protocol_tests/aws-restxml/runtimeConfig.native.ts b/protocol_tests/aws-restxml/runtimeConfig.native.ts
index 16990ad4fe8d..ccf6bc218186 100644
--- a/protocol_tests/aws-restxml/runtimeConfig.native.ts
+++ b/protocol_tests/aws-restxml/runtimeConfig.native.ts
@@ -5,7 +5,7 @@ import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.bro
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RestXmlProtocolClientConfig) => {
+export const getRuntimeConfig = (config: RestXmlProtocolClientConfig = {}) => {
   const browserDefaults = getBrowserRuntimeConfig(config);
   return {
     ...browserDefaults,
diff --git a/protocol_tests/aws-restxml/runtimeConfig.shared.ts b/protocol_tests/aws-restxml/runtimeConfig.shared.ts
index d3d1efaee5ac..07f24fb5740b 100644
--- a/protocol_tests/aws-restxml/runtimeConfig.shared.ts
+++ b/protocol_tests/aws-restxml/runtimeConfig.shared.ts
@@ -6,7 +6,7 @@ import { RestXmlProtocolClientConfig } from "./RestXmlProtocolClient";
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RestXmlProtocolClientConfig) => ({
+export const getRuntimeConfig = (config: RestXmlProtocolClientConfig = {}) => ({
   apiVersion: "2019-12-16",
   disableHostPrefix: config.disableHostPrefix ?? false,
   logger: config.logger ?? ({} as __Logger),
diff --git a/protocol_tests/aws-restxml/runtimeConfig.ts b/protocol_tests/aws-restxml/runtimeConfig.ts
index 38c5968134d1..79a119f6f3aa 100644
--- a/protocol_tests/aws-restxml/runtimeConfig.ts
+++ b/protocol_tests/aws-restxml/runtimeConfig.ts
@@ -14,7 +14,7 @@ import { getRuntimeConfig as getSharedRuntimeConfig } from "./runtimeConfig.shar
 /**
  * @internal
  */
-export const getRuntimeConfig = (config: RestXmlProtocolClientConfig) => {
+export const getRuntimeConfig = (config: RestXmlProtocolClientConfig = {}) => {
   const clientSharedValues = getSharedRuntimeConfig(config);
   return {
     ...clientSharedValues,