message: test: use ts 3.7 on material unit tests
  PR Close
diff: @@ -764,6 +764,13 @@ jobs:
  # minimum dependency on NodeJS v12 and Yarn 1.19.1, but the framework repository uses
  # older versions.
  command: yarn --ignore-engines --cwd ${MATERIAL_REPO_TMP_DIR} install --frozen-lockfile --non-interactive
  + - run:
  + # Install TypeScript 3.7
  + name: Installing TypeScript 3.7 on Material dependencies.
  + # TODO: remove this once the repo has been updated to use TypeScript 3.7.
  + # While built Angular packages support both TS 3.6 and 3.7, @angular/bazel itself only
  + # supports TS 3.7 because TSickle 0.38.0 only supports TS 3.7.
  + command: yarn --ignore-engines --cwd ${MATERIAL_REPO_TMP_DIR} add typescript@3.7.4
  - save_cache:
  key: *material_unit_tests_cache_key
  paths:
  