ci(aio): deploy commits on the stable branch to production

The current stable branch is determined based on the current version mapped to
the npm `latest` tag (by replacing the patch version number with 'x' - e.g.
`1.2.3` --> `1.2.x`).
PRs against the stable branch will be deployed to the preview server (as long as
the rest of the requirements are met). Commits on the stable branch itself will
be deployed to production.

Fixes #16908

aio/scripts/deploy-to-firebase.sh

@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+
+# WARNING: FIREBASE_TOKEN should NOT be printed.
+set +x -eu -o pipefail
+
+
+readonly deployEnv=$1
+
+case $deployEnv in
+  staging)
+    readonly projectId=aio-staging
+    readonly deployedUrl=https://$projectId.firebaseapp.com/
+    readonly firebaseToken=$FIREBASE_TOKEN
+    ;;
+  production)
+    readonly projectId=angular-io
+    readonly deployedUrl=https://angular.io/
+    readonly firebaseToken=$FIREBASE_TOKEN
+    ;;
+  *)
+    echo "Unknown deployment environment ('$deployEnv'). Expected 'staging' or 'production'."
+    exit 1
+    ;;
+esac
+
+(
+  cd "`dirname $0`/.."
+
+  # Build the app
+  yarn build
+
+  # Deploy to Firebase
+  firebase use "$projectId" --token "$firebaseToken"
+  firebase deploy --message "Commit: $TRAVIS_COMMIT" --non-interactive --token "$firebaseToken"
+
+  # Run PWA-score tests
+  # TODO(gkalpak): Figure out why this fails and re-enable.
+  yarn test-pwa-score -- "$deployedUrl" "$MIN_PWA_SCORE" "$PWA_RESULTS_LOG" || true
+)