message: test: ensure correct TS version before running postinstall
  The bazel-schematics test could suffer from a version skew where new CLI projects were not yet using a new TS version, but Angular packages already were.
  This caused the the `ngc` call in the added `postinstall` to run and fail:
  PR Close
diff: @@ -26,11 +26,8 @@ function testBazel() {
  # Create project
  ng new demo --collection=@angular/bazel --routing --skip-git --skip-install --style=scss
  cd demo
  - # Do an initial install to ensure packages like node-sass are built.
  - yarn
  # Force more recent TS version until new Angular CLI projects also use it.
  - # --ignore-scripts is necessary because there is a postinstall script that uses ngc.
  - yarn add typescript@3.4.2 --dev --ignore-scripts
  + yarn add typescript@3.4.2 --dev
  installLocalPackages
  yarn webdriver-manager update --gecko=false --standalone=false ${CI_CHROMEDRIVER_VERSION_ARG:---versions.chrome 2.45}
  ng generate component widget --style=css
  