Ensure that a primitive type (string, number, boolean, null, undefined) response body with or without a bodyMapper is not flattened

Changelog.md

@@ -1,4 +1,7 @@
 # Changelog
+## 2.0.4 - 2019-07-30
+- Ensure that a primitive type (string, number, boolean, null, undefined) response body with or without a `bodyMapper` is not flattened.
+
 ## 2.0.3 - 2019-07-11
 - Added support to not send default values while sending the request.
 - Added support to populate entities with it's default value if it is present in the mapper while deserializing the response.

lib/serviceClient.ts

@@ -576,7 +576,7 @@ export function flattenResponse(_response: HttpOperationResponse, responseSpec:
     }
   }
 
-  if (bodyMapper || _response.request.method === "HEAD") {
+  if (bodyMapper || _response.request.method === "HEAD" || utils.isPrimitiveType(_response.parsedBody)) {
     // primitive body types and HEAD booleans
     return addOperationResponse({
       ...parsedHeaders,

lib/util/constants.ts

@@ -7,7 +7,7 @@ export const Constants = {
    * @const
    * @type {string}
    */
-  msRestVersion: "2.0.3",
+  msRestVersion: "2.0.4",
 
   /**
    * Specifies HTTP.

lib/util/utils.ts

@@ -249,3 +249,13 @@ export function isDuration(value: string): boolean {
 export function replaceAll(value: string | undefined, searchValue: string, replaceValue: string): string | undefined {
   return !value || !searchValue ? value : value.split(searchValue).join(replaceValue || "");
 }
+
+/**
+ * Determines whether the given enity is a basic/primitive type
+ * (string, number, boolean, null, undefined).
+ * @param value Any entity
+ * @return boolean - true is it is primitive type, false otherwise.
+ */
+export function isPrimitiveType(value: any): boolean {
+  return (typeof value !== "object" && typeof value !== "function") || value === null;
+}

package.json

@@ -5,7 +5,7 @@
     "email": "azsdkteam@microsoft.com",
     "url": "https://github.com/Azure/ms-rest-js"
   },
-  "version": "2.0.3",
+  "version": "2.0.4",
   "description": "Isomorphic client Runtime for Typescript/node.js/browser javascript client libraries generated using AutoRest",
   "tags": [
     "isomorphic",