message: build: set `preserveWhitespaces` to false by default on Bazel
  `preserveWhitespaces: false` will be the default in Angular 6+
  You can opt-out at component or element level.
  Docs:
  PR Close
diff: @@ -73,7 +73,8 @@ def _ngc_tsconfig(ctx, files, srcs, **kwargs):
  "allowEmptyCodegenFiles": True,
  "enableSummariesForJit": True,
  # FIXME: wrong place to de-dupe
  - "expectedOut": depset([o.path for o in expected_outs]).to_list()
  + "expectedOut": depset([o.path for o in expected_outs]).to_list(),
  + "preserveWhitespaces": False,
  }
  })
  