message: ci: Add ANGULAR_PACKAGE to snapshot builds
  Ivy snapshots no longer contain metadata.json which breaks the detection logic for
  Angular Package Format (APF) in npm/yarn install.
  This PR adds ANGULAR_PACAKGE as a magic file to denote APF.
  See
  PR Close
diff: @@ -70,6 +70,7 @@ function publishRepo {
  fi
  echo `date` > $REPO_DIR/BUILD_INFO
  echo $SHA >> $REPO_DIR/BUILD_INFO
  + echo 'This file is used by the npm/yarn_install rule to detect APF. See https://github.com/bazelbuild/rules_nodejs/issues/927' > $REPO_DIR/ANGULAR_PACKAGE
  (
  cd $REPO_DIR && \
  