Merge from vscode c58aaab8a1cc22a7139b761166a0d4f37d41e998 (#7880)

* Merge from vscode c58aaab8a1cc22a7139b761166a0d4f37d41e998

* fix pipelines

* fix strict-null-checks

* add missing files

build/azure-pipelines/win32/continuous-build-win32.yml

@@ -25,7 +25,7 @@ steps:
     vstsFeed: '$(ArtifactFeed)'
   condition: and(succeeded(), ne(variables['CacheRestored'], 'true'))
 - powershell: |
-    yarn gulp electron
+    yarn electron
 - script: |
     yarn gulp hygiene --skip-tslint
   displayName: Run Hygiene Checks

build/azure-pipelines/win32/product-build-win32.yml

@@ -107,7 +107,7 @@ steps:
 - powershell: |
     . build/azure-pipelines/win32/exec.ps1
     $ErrorActionPreference = "Stop"
-    exec { yarn gulp "electron-$(VSCODE_ARCH)" }
+    exec { yarn electron $(VSCODE_ARCH) }
     exec { .\scripts\test.bat --build --tfs "Unit Tests" }
   displayName: Run unit tests
   condition: and(succeeded(), eq(variables['VSCODE_STEP_ON_IT'], 'false'))