Always release @firebase/app (#4941)

Author: Feiyang1

.github/workflows/release.yml

@@ -24,6 +24,9 @@ jobs:
       - name: Install Dependencies
         run: yarn
 
+      - name: Add a changeset for @firebase/app
+        run: yarn ts-node-script scripts/add_changeset.ts
+
       - name: Create Release Pull Request
         uses: changesets/action@master
         env:

scripts/add_changeset.ts

@@ -0,0 +1,68 @@
+/**
+ * @license
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Add a patch changeset for `@firebase/app` to force its release, so that
+ * the SDK_VERSION is up to date with the version of the umbrella package firebase.
+ *
+ * For background, see https://github.com/firebase/firebase-js-sdk/issues/4235
+ */
+
+import { writeFileSync } from 'fs';
+import { projectRoot } from './utils';
+import { exec } from 'child-process-promise';
+
+const CONTENT = `
+---
+'@firebase/app': patch
+---
+
+Update SDK_VERSION.
+`;
+
+const FILE_PATH = `${projectRoot}/.changeset/bump-sdk-version.md`;
+
+async function addChangeSet() {
+  // check if a few firebase version is being released
+  try {
+    const { stdout } = await exec('yarn changeset status');
+    // only add a changeset for @firebase/app if
+    // 1. we are publishing a new firebase version. and
+    // 2. @firebase/app is not already being published
+    const firebaseRelease = stdout.includes('- firebase\n');
+    const firebaseAppRelease = stdout.includes('- @firebase/app\n');
+    if (firebaseRelease && !firebaseAppRelease) {
+      console.log('Creating a patch changeset for @firebase/app');
+      writeFileSync(FILE_PATH, CONTENT, {
+        encoding: 'utf-8'
+      });
+    } else if (firebaseAppRelease) {
+      console.log(
+        'Skip creating a patch changeset for @firebase/app because it is already part of the release'
+      );
+    } else {
+      console.log(
+        'Skip creating a patch changeset for @firebase/app because firebase is not being released'
+      );
+    }
+  } catch (e) {
+    // log the error, the exit without creating a changeset
+    console.log('error:', e);
+  }
+}
+
+addChangeSet();