diff --git a/demos/attachments/package-lock.json b/demos/attachments/package-lock.json
index dc5449e1e8..5732bdea91 100644
--- a/demos/attachments/package-lock.json
+++ b/demos/attachments/package-lock.json
@@ -2,22 +2,6 @@
   "requires": true,
   "lockfileVersion": 1,
   "dependencies": {
-    "@esri/arcgis-rest-feature-service": {
-      "version": "1.5.1",
-      "resolved": "https://registry.npmjs.org/@esri/arcgis-rest-feature-service/-/arcgis-rest-feature-service-1.5.1.tgz",
-      "integrity": "sha1-UHcRzNbH12qWAiGrt1NftGZqlEE=",
-      "requires": {
-        "tslib": "^1.7.1"
-      }
-    },
-    "@esri/arcgis-rest-request": {
-      "version": "1.5.1",
-      "resolved": "https://registry.npmjs.org/@esri/arcgis-rest-request/-/arcgis-rest-request-1.5.1.tgz",
-      "integrity": "sha1-FkpHBgWJL9D03rQihJMj/pNId4w=",
-      "requires": {
-        "tslib": "^1.7.1"
-      }
-    },
     "async": {
       "version": "1.5.2",
       "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
@@ -176,11 +160,6 @@
       "resolved": "https://registry.npmjs.org/requires-port/-/requires-port-1.0.0.tgz",
       "integrity": "sha1-kl0mAdOaxIXgkc8NpcbmlNw9yv8="
     },
-    "tslib": {
-      "version": "1.9.3",
-      "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.9.3.tgz",
-      "integrity": "sha512-4krF8scpejhaOgqzBEcGM7yDIEfi0/8+8zDRZhNZZ2kjmHJ4hv3zCbQWxoJGz1iw5U0Jl0nma13xzHXcncMavQ=="
-    },
     "union": {
       "version": "0.4.6",
       "resolved": "https://registry.npmjs.org/union/-/union-0.4.6.tgz",
diff --git a/packages/arcgis-rest-feature-service/src/query.ts b/packages/arcgis-rest-feature-service/src/query.ts
index 50eddc1c45..032535ed24 100644
--- a/packages/arcgis-rest-feature-service/src/query.ts
+++ b/packages/arcgis-rest-feature-service/src/query.ts
@@ -90,12 +90,11 @@ export interface IQueryFeaturesResponse extends IFeatureSet {
   exceededTransferLimit?: boolean;
 }
 
-export interface IQueryCountResponse {
-  count: number;
-}
-
-export interface IQueryExtentResponse {
-  extent: IExtent;
+export interface IQueryResponse {
+  count?: number;
+  extent?: IExtent;
+  objectIdFieldName?: string;
+  objectIds?: number[];
 }
 
 /**
@@ -153,9 +152,7 @@ export function getFeature(
  */
 export function queryFeatures(
   requestOptions: IQueryFeaturesRequestOptions
-): Promise<
-  IQueryFeaturesResponse | IQueryCountResponse | IQueryExtentResponse
-> {
+): Promise<IQueryFeaturesResponse | IQueryResponse> {
   // default to a GET request
   const options: IQueryFeaturesRequestOptions = {
     params: {},