Update the validation of values in query parameters (#488)

* Add check 'false' value in query params

* Update changes

* Fix the comparison

* Update comprasion

Author: Ivan Golubev

api/VsoClient.ts

@@ -185,7 +185,7 @@ export class VsoClient {
     }
 
     private queryParamsToStringHelper(queryParams: any, prefix: string): string {
-        if (!queryParams) {
+        if (queryParams == null || queryParams.length === 0) {
             return '';
         }
         let queryString: string = '';

package-lock.json

@@ -1,7 +1,7 @@
 {
     "name": "azure-devops-node-api",
     "description": "Node client for Azure DevOps and TFS REST APIs",
-    "version": "11.1.0",
+    "version": "11.1.1",
     "main": "./WebApi.js",
     "types": "./WebApi.d.ts",
     "scripts": {