Conditionally add comments for unchanged .promise() APIs (#860)

.changeset/shy-dogs-visit.md

@@ -0,0 +1,5 @@
+---
+"aws-sdk-js-codemod": patch
+---
+
+Conditionally add comments for unchanged .promise() APIs

src/transforms/v2-to-v3/__fixtures__/misc/no-formatting.input.js

@@ -1 +1 @@
-const env = {...process.env, ...(this.config.env || {})}
+const env = {...process.env, ...this.config.env || {}}

src/transforms/v2-to-v3/__fixtures__/misc/no-formatting.output.js

@@ -1 +1 @@
-const env = {...process.env, ...(this.config.env || {})}
+const env = {...process.env, ...this.config.env || {}}

src/transforms/v2-to-v3/apis/index.ts

@@ -1,11 +1,11 @@
 export * from "./addEmptyObjectForUndefined";
 export * from "./addNotSupportedClientComments";
+export * from "./addPromiseRemovalComments";
 export * from "./getClientIdentifiersRecord";
 export * from "./getClientWaiterStates";
 export * from "./getCommandName";
 export * from "./getS3SignedUrlApiNames";
 export * from "./getV3ClientWaiterApiName";
-export * from "./addPromiseRemovalComments";
 export * from "./isS3GetSignedUrlApiUsed";
 export * from "./isS3UploadApiUsed";
 export * from "./removePromiseCalls";

src/transforms/v2-to-v3/transformer.ts

@@ -51,9 +51,12 @@ const transformer = async (file: FileInfo, api: API) => {
   const importType = getImportType(j, source);
 
   if (importType === null) {
-    addPromiseRemovalComments(j, source);
+    if (file.source.includes(".promise(")) {
+      addPromiseRemovalComments(j, source);
+      return source.toSource();
+    }
     // Skip transformation, since no import/require statements found for "aws-sdk" package.
-    return source.toSource();
+    return file.source;
   }
 
   replaceDeepImport(j, source, { fromPath: "aws-sdk/global", toPath: PACKAGE_NAME });