Use Npm task

The Npm task is better to use than a Script task because it correctly injects credentials and other config

Author: mchelen

azure-pipelines.yml

@@ -8,9 +8,13 @@ steps:
   inputs:
     versionSpec: '8.x'
 
-- script: |
-    npm install
-    npm test
+- task: Npm@1
+  inputs:
+    command: install
+
+- task: Npm@1
+  inputs:
+    command: test
 
 - task: PublishTestResults@2
   inputs: