From 1ee90c73049f386a2626546214e357f0b19b853d Mon Sep 17 00:00:00 2001
From: Christina Holland <hsubox@gmail.com>
Date: Mon, 26 Sep 2022 17:00:11 -0700
Subject: [PATCH 01/15] Fresh branch for jamesdaniels_ssr_autoconfig

---
 config/.eslintrc.js                         |  2 +-
 packages/app/src/api.ts                     | 21 +++++-
 packages/app/src/errors.ts                  |  2 +
 packages/auth/src/platform_browser/index.ts | 44 ++++++++++-
 packages/auth/src/platform_node/index.ts    | 12 ++-
 packages/database/src/api/Database.ts       | 16 +++-
 packages/firestore/src/api/database.ts      | 44 +++++++----
 packages/firestore/src/lite-api/database.ts | 19 ++++-
 packages/functions/src/api.ts               |  8 +-
 packages/storage/src/api.ts                 | 13 +++-
 packages/util/index.node.ts                 |  1 +
 packages/util/index.ts                      |  1 +
 packages/util/src/defaults.ts               | 82 +++++++++++++++++++++
 13 files changed, 235 insertions(+), 30 deletions(-)
 create mode 100644 packages/util/src/defaults.ts

diff --git a/config/.eslintrc.js b/config/.eslintrc.js
index 04de0f9d10c..97f6df9be8f 100644
--- a/config/.eslintrc.js
+++ b/config/.eslintrc.js
@@ -129,7 +129,7 @@ module.exports = {
       {
         // Check dependencies from both local package.json
         // and from root package.json.
-        'packageDir': [path.join(__dirname, '../'), './'],
+        'packageDir': [context.getFilename(), path.join(__dirname, '../'), './'],
         'devDependencies': [
           '**/*.test.ts',
           '**/test/**/*.ts',
diff --git a/packages/app/src/api.ts b/packages/app/src/api.ts
index 1a713b242c1..b76a00e2d1b 100644
--- a/packages/app/src/api.ts
+++ b/packages/app/src/api.ts
@@ -39,7 +39,7 @@ import {
   LogOptions,
   setUserLogHandler
 } from '@firebase/logger';
-import { deepEqual } from '@firebase/util';
+import { deepEqual, getDefaultAppConfig } from '@firebase/util';
 
 export { FirebaseError } from '@firebase/util';
 
@@ -110,10 +110,18 @@ export function initializeApp(
   options: FirebaseOptions,
   config?: FirebaseAppSettings
 ): FirebaseApp;
+/**
+ * Creates and initializes a FirebaseApp instance.
+ *
+ * @public
+ */
+export function initializeApp(): FirebaseApp;
 export function initializeApp(
-  options: FirebaseOptions,
+  _options?: FirebaseOptions,
   rawConfig = {}
 ): FirebaseApp {
+  let options = _options;
+
   if (typeof rawConfig !== 'object') {
     const name = rawConfig;
     rawConfig = { name };
@@ -132,6 +140,12 @@ export function initializeApp(
     });
   }
 
+  options ||= getDefaultAppConfig();
+
+  if (!options) {
+    throw ERROR_FACTORY.create(AppError.NO_OPTIONS);
+  }
+
   const existingApp = _apps.get(name) as FirebaseAppImpl;
   if (existingApp) {
     // return the existing app if options and config deep equal the ones in the existing app.
@@ -188,6 +202,9 @@ export function initializeApp(
  */
 export function getApp(name: string = DEFAULT_ENTRY_NAME): FirebaseApp {
   const app = _apps.get(name);
+  if (!app && name === DEFAULT_ENTRY_NAME) {
+    return initializeApp();
+  }
   if (!app) {
     throw ERROR_FACTORY.create(AppError.NO_APP, { appName: name });
   }
diff --git a/packages/app/src/errors.ts b/packages/app/src/errors.ts
index ed307085b09..8d6f5983ccf 100644
--- a/packages/app/src/errors.ts
+++ b/packages/app/src/errors.ts
@@ -22,6 +22,7 @@ export const enum AppError {
   BAD_APP_NAME = 'bad-app-name',
   DUPLICATE_APP = 'duplicate-app',
   APP_DELETED = 'app-deleted',
+  NO_OPTIONS = 'no-options',
   INVALID_APP_ARGUMENT = 'invalid-app-argument',
   INVALID_LOG_ARGUMENT = 'invalid-log-argument',
   IDB_OPEN = 'idb-open',
@@ -38,6 +39,7 @@ const ERRORS: ErrorMap<AppError> = {
   [AppError.DUPLICATE_APP]:
     "Firebase App named '{$appName}' already exists with different options or config",
   [AppError.APP_DELETED]: "Firebase App named '{$appName}' already deleted",
+  [AppError.NO_OPTIONS]: "Need to provide options, when not being deployed to hosting via source.",
   [AppError.INVALID_APP_ARGUMENT]:
     'firebase.{$appName}() takes either no argument or a ' +
     'Firebase App instance.',
diff --git a/packages/auth/src/platform_browser/index.ts b/packages/auth/src/platform_browser/index.ts
index 3d206c3706d..102e503ba96 100644
--- a/packages/auth/src/platform_browser/index.ts
+++ b/packages/auth/src/platform_browser/index.ts
@@ -17,14 +17,36 @@
 
 import { FirebaseApp, getApp, _getProvider } from '@firebase/app';
 
-import { initializeAuth } from '..';
+import { initializeAuth, beforeAuthStateChanged, onIdTokenChanged, connectAuthEmulator } from '..';
 import { registerAuth } from '../core/auth/register';
 import { ClientPlatform } from '../core/util/version';
 import { browserLocalPersistence } from './persistence/local_storage';
 import { browserSessionPersistence } from './persistence/session_storage';
 import { indexedDBLocalPersistence } from './persistence/indexed_db';
 import { browserPopupRedirectResolver } from './popup_redirect';
-import { Auth } from '../model/public_types';
+import { Auth, User } from '../model/public_types';
+import { getDefaultEmulatorHost, getExperimentalSetting } from '@firebase/util';
+
+const DEFAULT_ID_TOKEN_MAX_AGE = 5 * 60;
+const authIdTokenMaxAge = getExperimentalSetting('authIdTokenMaxAge') || DEFAULT_ID_TOKEN_MAX_AGE;
+
+let lastPostedIdToken: string|undefined|null = null;
+
+const mintCookieFactory = (url:string) => async (user: User|null) => {
+  const idTokenResult = user && await user.getIdTokenResult();
+  const idTokenAge = idTokenResult && (new Date().getTime() - Date.parse(idTokenResult.issuedAtTime)) / 1_000;
+  if (idTokenAge && idTokenAge > authIdTokenMaxAge) return;
+  // Specifically trip null => undefined when logged out, to delete any existing cookie
+  const idToken = idTokenResult?.token;
+  if (lastPostedIdToken === idToken) return;
+  lastPostedIdToken = idToken;
+  await fetch(url, {
+      method: idToken ? 'POST' : 'DELETE',
+      headers: idToken ? {
+          'Authorization': `Bearer ${idToken}`,
+      } : {}
+  });
+};
 
 /**
  * Returns the Auth instance associated with the provided {@link @firebase/app#FirebaseApp}.
@@ -41,7 +63,7 @@ export function getAuth(app: FirebaseApp = getApp()): Auth {
     return provider.getImmediate();
   }
 
-  return initializeAuth(app, {
+  const auth = initializeAuth(app, {
     popupRedirectResolver: browserPopupRedirectResolver,
     persistence: [
       indexedDBLocalPersistence,
@@ -49,6 +71,22 @@ export function getAuth(app: FirebaseApp = getApp()): Auth {
       browserSessionPersistence
     ]
   });
+
+  const authTokenSyncUrl = getExperimentalSetting('authTokenSyncURL');
+  if (authTokenSyncUrl) {
+    const mintCookie = mintCookieFactory(authTokenSyncUrl);
+    beforeAuthStateChanged(auth, mintCookie, () => {
+        mintCookie(auth.currentUser)
+    });
+    onIdTokenChanged(auth, user => mintCookie(user));
+  }
+
+  const authEmulatorHost = getDefaultEmulatorHost('auth');
+  if (authEmulatorHost) {
+    connectAuthEmulator(auth, `http://${authEmulatorHost}`);
+  }
+
+  return auth;
 }
 
 registerAuth(ClientPlatform.BROWSER);
diff --git a/packages/auth/src/platform_node/index.ts b/packages/auth/src/platform_node/index.ts
index 14f5a531b93..570f1e0589f 100644
--- a/packages/auth/src/platform_node/index.ts
+++ b/packages/auth/src/platform_node/index.ts
@@ -21,13 +21,14 @@ import { _createError } from '../core/util/assert';
 import { FirebaseApp, getApp, _getProvider } from '@firebase/app';
 import { Auth } from '../model/public_types';
 
-import { initializeAuth, inMemoryPersistence } from '..';
+import { initializeAuth, inMemoryPersistence, connectAuthEmulator } from '..';
 import { registerAuth } from '../core/auth/register';
 import { ClientPlatform } from '../core/util/version';
 import { AuthImpl } from '../core/auth/auth_impl';
 
 import { FetchProvider } from '../core/util/fetch_provider';
 import * as fetchImpl from 'node-fetch';
+import { getDefaultEmulatorHost } from '@firebase/util';
 
 // Initialize the fetch polyfill, the types are slightly off so just cast and hope for the best
 FetchProvider.initialize(
@@ -46,7 +47,14 @@ export function getAuth(app: FirebaseApp = getApp()): Auth {
     return provider.getImmediate();
   }
 
-  return initializeAuth(app);
+  const auth = initializeAuth(app);
+
+  const authEmulatorHost = getDefaultEmulatorHost('auth');
+  if (authEmulatorHost) {
+    connectAuthEmulator(auth, `http://${authEmulatorHost}`);
+  }
+
+  return auth;
 }
 
 registerAuth(ClientPlatform.NODE);
diff --git a/packages/database/src/api/Database.ts b/packages/database/src/api/Database.ts
index 840e1be5aff..a0c2a816597 100644
--- a/packages/database/src/api/Database.ts
+++ b/packages/database/src/api/Database.ts
@@ -27,7 +27,8 @@ import { Provider } from '@firebase/component';
 import {
   getModularInstance,
   createMockUserToken,
-  EmulatorMockTokenOptions
+  EmulatorMockTokenOptions,
+  getDefaultEmulatorHost
 } from '@firebase/util';
 
 import { AppCheckTokenProvider } from '../core/AppCheckTokenProvider';
@@ -53,7 +54,10 @@ import { WebSocketConnection } from '../realtime/WebSocketConnection';
 
 import { ReferenceImpl } from './Reference_impl';
 
-export { EmulatorMockTokenOptions } from '@firebase/util';
+export {
+  EmulatorMockTokenOptions,
+  getDefaultEmulatorHost
+} from '@firebase/util';
 /**
  * This variable is also defined in the firebase Node.js Admin SDK. Before
  * modifying this definition, consult the definition in:
@@ -316,9 +320,15 @@ export function getDatabase(
   app: FirebaseApp = getApp(),
   url?: string
 ): Database {
-  return _getProvider(app, 'database').getImmediate({
+  const db = _getProvider(app, 'database').getImmediate({
     identifier: url
   }) as Database;
+  const databaseEmulatorHost = getDefaultEmulatorHost('database');
+  if (databaseEmulatorHost) {
+    const [host, port] = databaseEmulatorHost.split(':');
+    connectDatabaseEmulator(db, host, parseInt(port, 10));
+  }
+  return db;
 }
 
 /**
diff --git a/packages/firestore/src/api/database.ts b/packages/firestore/src/api/database.ts
index 6dbd4463cb3..6ffda1b044f 100644
--- a/packages/firestore/src/api/database.ts
+++ b/packages/firestore/src/api/database.ts
@@ -15,14 +15,13 @@
  * limitations under the License.
  */
 
-// eslint-disable-next-line import/no-extraneous-dependencies
 import {
   _getProvider,
   _removeServiceInstance,
   FirebaseApp,
   getApp
 } from '@firebase/app';
-import { deepEqual } from '@firebase/util';
+import { deepEqual, getDefaultEmulatorHost } from '@firebase/util';
 
 import { User } from '../auth/user';
 import {
@@ -43,7 +42,10 @@ import {
   setOnlineComponentProvider
 } from '../core/firestore_client';
 import { makeDatabaseInfo } from '../lite-api/components';
-import { Firestore as LiteFirestore } from '../lite-api/database';
+import {
+  Firestore as LiteFirestore,
+  connectFirestoreEmulator
+} from '../lite-api/database';
 import { Query } from '../lite-api/reference';
 import {
   indexedDbClearPersistence,
@@ -162,9 +164,9 @@ export function initializeFirestore(
       throw new FirestoreError(
         Code.FAILED_PRECONDITION,
         'initializeFirestore() has already been called with ' +
-          'different options. To avoid this error, call initializeFirestore() with the ' +
-          'same options as when it was originally called, or call getFirestore() to return the' +
-          ' already initialized instance.'
+        'different options. To avoid this error, call initializeFirestore() with the ' +
+        'same options as when it was originally called, or call getFirestore() to return the' +
+        ' already initialized instance.'
       );
     }
   }
@@ -215,7 +217,15 @@ export function getFirestore(app: FirebaseApp): Firestore;
  */
 export function getFirestore(databaseId: string): Firestore;
 /**
- * Returns the existing {@link Firestore} instance that is associated with the
+ * Returns the existing default {@link Firestore} instance that is associated with the
+ * default {@link @firebase/app#FirebaseApp}. If no instance exists, initializes a new
+ * instance with default settings.
+ *
+ * @returns The {@link Firestore} instance of the provided app.
+ */
+export function getFirestore(): Firestore;
+/**
+ * Returns the existing default {@link Firestore} instance that is associated with the
  * provided {@link @firebase/app#FirebaseApp}. If no instance exists, initializes a new
  * instance with default settings.
  *
@@ -236,9 +246,17 @@ export function getFirestore(
     typeof appOrDatabaseId === 'string'
       ? appOrDatabaseId
       : optionalDatabaseId || DEFAULT_DATABASE_NAME;
-  return _getProvider(app, 'firestore').getImmediate({
+  const db = _getProvider(app, 'firestore').getImmediate({
     identifier: databaseId
   }) as Firestore;
+  if (!db._initialized) {
+    const firestoreEmulatorHost = getDefaultEmulatorHost('firestore');
+    if (firestoreEmulatorHost) {
+      const [host, port] = firestoreEmulatorHost.split(':');
+      connectFirestoreEmulator(db, host, parseInt(port, 10));
+    }
+  }
+  return db;
 }
 
 /**
@@ -390,8 +408,8 @@ function setPersistenceProviders(
         }
         logWarn(
           'Error enabling offline persistence. Falling back to ' +
-            'persistence disabled: ' +
-            error
+          'persistence disabled: ' +
+          error
         );
         persistenceResult.reject(error);
       }
@@ -464,7 +482,7 @@ export function clearIndexedDbPersistence(firestore: Firestore): Promise<void> {
     throw new FirestoreError(
       Code.FAILED_PRECONDITION,
       'Persistence can only be cleared before a Firestore instance is ' +
-        'initialized or after it is terminated.'
+      'initialized or after it is terminated.'
     );
   }
 
@@ -620,8 +638,8 @@ function verifyNotInitialized(firestore: Firestore): void {
     throw new FirestoreError(
       Code.FAILED_PRECONDITION,
       'Firestore has already been started and persistence can no longer be ' +
-        'enabled. You can only enable persistence before calling any other ' +
-        'methods on a Firestore object.'
+      'enabled. You can only enable persistence before calling any other ' +
+      'methods on a Firestore object.'
     );
   }
 }
diff --git a/packages/firestore/src/lite-api/database.ts b/packages/firestore/src/lite-api/database.ts
index c7ab4d5b437..dc6d509a6b5 100644
--- a/packages/firestore/src/lite-api/database.ts
+++ b/packages/firestore/src/lite-api/database.ts
@@ -22,7 +22,11 @@ import {
   FirebaseApp,
   getApp
 } from '@firebase/app';
-import { createMockUserToken, EmulatorMockTokenOptions } from '@firebase/util';
+import {
+  createMockUserToken,
+  EmulatorMockTokenOptions,
+  getDefaultEmulatorHost
+} from '@firebase/util';
 
 import {
   CredentialsProvider,
@@ -44,6 +48,8 @@ import {
   FirestoreSettings
 } from './settings';
 
+export { EmulatorMockTokenOptions } from '@firebase/util';
+
 declare module '@firebase/component' {
   interface NameServiceMapping {
     'firestore/lite': Firestore;
@@ -260,12 +266,19 @@ export function getFirestore(
     typeof appOrDatabaseId === 'string'
       ? appOrDatabaseId
       : optionalDatabaseId || '(default)';
-  return _getProvider(app, 'firestore/lite').getImmediate({
+  const db = _getProvider(app, 'firestore/lite').getImmediate({
     identifier: databaseId
   }) as Firestore;
+  if (!db._initialized) {
+    const firestoreEmulatorHost = getDefaultEmulatorHost('firestore');
+    if (firestoreEmulatorHost) {
+      const [host, port] = firestoreEmulatorHost.split(':');
+      connectFirestoreEmulator(db, host, parseInt(port, 10));
+    }
+  }
+  return db;
 }
 
-export { EmulatorMockTokenOptions } from '@firebase/util';
 /**
  * Modify this instance to communicate with the Cloud Firestore emulator.
  *
diff --git a/packages/functions/src/api.ts b/packages/functions/src/api.ts
index 52913263041..f6b5066b9a8 100644
--- a/packages/functions/src/api.ts
+++ b/packages/functions/src/api.ts
@@ -27,7 +27,7 @@ import {
   httpsCallable as _httpsCallable,
   httpsCallableFromURL as _httpsCallableFromURL
 } from './service';
-import { getModularInstance } from '@firebase/util';
+import { getModularInstance, getDefaultEmulatorHost } from '@firebase/util';
 
 export * from './public-types';
 
@@ -51,6 +51,12 @@ export function getFunctions(
   const functionsInstance = functionsProvider.getImmediate({
     identifier: regionOrCustomDomain
   });
+  const functionsEmulatorHost = getDefaultEmulatorHost('functions');
+  if (functionsEmulatorHost) {
+    const [host, port] = functionsEmulatorHost.split(':');
+    // eslint-disable-next-line no-restricted-globals
+    connectFunctionsEmulator(functionsInstance, host, parseInt(port, 10));
+  }
   return functionsInstance;
 }
 
diff --git a/packages/storage/src/api.ts b/packages/storage/src/api.ts
index a489cacccb8..4b59c310543 100644
--- a/packages/storage/src/api.ts
+++ b/packages/storage/src/api.ts
@@ -14,7 +14,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-// eslint-disable-next-line import/no-extraneous-dependencies
 import { _getProvider, FirebaseApp, getApp } from '@firebase/app';
 
 import {
@@ -51,7 +50,11 @@ import {
   getBytesInternal
 } from './reference';
 import { STORAGE_TYPE } from './constants';
-import { EmulatorMockTokenOptions, getModularInstance } from '@firebase/util';
+import {
+  EmulatorMockTokenOptions,
+  getModularInstance,
+  getDefaultEmulatorHost
+} from '@firebase/util';
 import { StringFormat } from './implementation/string';
 
 export { EmulatorMockTokenOptions } from '@firebase/util';
@@ -331,6 +334,12 @@ export function getStorage(
   const storageInstance = storageProvider.getImmediate({
     identifier: bucketUrl
   });
+  const storageEmulatorHost = getDefaultEmulatorHost('storage');
+  if (storageEmulatorHost) {
+    const [host, port] = storageEmulatorHost.split(':');
+    // eslint-disable-next-line no-restricted-globals
+    connectStorageEmulator(storageInstance, host, parseInt(port, 10));
+  }
   return storageInstance;
 }
 
diff --git a/packages/util/index.node.ts b/packages/util/index.node.ts
index d39d5253c1f..d63584284ac 100644
--- a/packages/util/index.node.ts
+++ b/packages/util/index.node.ts
@@ -24,6 +24,7 @@ export * from './src/assert';
 export * from './src/crypt';
 export * from './src/constants';
 export * from './src/deepCopy';
+export * from './src/defaults';
 export * from './src/deferred';
 export * from './src/emulator';
 export * from './src/environment';
diff --git a/packages/util/index.ts b/packages/util/index.ts
index 3f38c307eb3..c529580b24e 100644
--- a/packages/util/index.ts
+++ b/packages/util/index.ts
@@ -19,6 +19,7 @@ export * from './src/assert';
 export * from './src/crypt';
 export * from './src/constants';
 export * from './src/deepCopy';
+export * from './src/defaults';
 export * from './src/deferred';
 export * from './src/emulator';
 export * from './src/environment';
diff --git a/packages/util/src/defaults.ts b/packages/util/src/defaults.ts
new file mode 100644
index 00000000000..0eb4a6a7f9f
--- /dev/null
+++ b/packages/util/src/defaults.ts
@@ -0,0 +1,82 @@
+/**
+ * @license
+ * Copyright 2022 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.
+ */
+
+import { base64Decode } from './crypt';
+import { getGlobal } from './environment';
+
+type ExperimentalKey = 'authTokenSyncURL' | 'authIdTokenMaxAge';
+
+interface FirebaseDefaults {
+  config?: Record<string, string>;
+  emulatorHosts?: Record<string, string>;
+  _authTokenSyncURL?: string;
+  _authIdTokenMaxAge?: number;
+  [key: string]: unknown;
+}
+
+declare global {
+  // Need `var` for this to work.
+  // eslint-disable-next-line no-var
+  var __FIREBASE_DEFAULTS__: FirebaseDefaults | undefined;
+}
+
+const getDefaultsFromGlobal = (): FirebaseDefaults | undefined =>
+  getGlobal().__FIREBASE_DEFAULTS__;
+
+/**
+ * Attempt to read defaults from a JSON file whose path is in
+ * process.env.__FIREBASE_DEFAULTS_PATH__
+ */
+const getDefaultsFromEnvVariable = (): FirebaseDefaults | undefined => {
+  if (typeof process === 'undefined') {
+    return;
+  }
+  const jsonPath = process.env.__FIREBASE_DEFAULTS_PATH__;
+  if (jsonPath && typeof require !== 'undefined') {
+    try {
+      const json = require(jsonPath);
+      return json;
+    } catch(e) {
+      `Unable to read defaults from file: ${jsonPath}.`
+    }
+  }
+};
+
+const getDefaultsFromCookie = (): FirebaseDefaults | undefined => {
+  if (typeof document === 'undefined') {
+    return;
+  }
+  const match = document.cookie.match(/__FIREBASE_DEFAULTS__=([^;]+)/);
+  const decoded = match && base64Decode(match[1]);
+  return decoded && JSON.parse(decoded);
+};
+
+const getDefaults = (): FirebaseDefaults | undefined =>
+  getDefaultsFromGlobal() ||
+  getDefaultsFromEnvVariable() ||
+  getDefaultsFromCookie();
+
+export const getDefaultEmulatorHost = (name: string): string | undefined =>
+  getDefaults()?.emulatorHosts?.[name];
+
+export const getDefaultAppConfig = (): Record<string, string> | undefined =>
+  getDefaults()?.config;
+
+export const getExperimentalSetting = <T extends ExperimentalKey>(
+  name: T
+): FirebaseDefaults[`_${T}`] =>
+  getDefaults()?.[`_${name}`] as FirebaseDefaults[`_${T}`];

From 233cc69b7aa356d79e319eeebd38149c672d0540 Mon Sep 17 00:00:00 2001
From: Christina Holland <hsubox@gmail.com>
Date: Mon, 26 Sep 2022 17:07:22 -0700
Subject: [PATCH 02/15] Some missed files

---
 common/api-review/app.api.md    |  3 +++
 common/api-review/util.api.md   | 17 +++++++++++++++++
 packages/app-types/index.d.ts   |  4 ++++
 packages/firestore/externs.json |  1 +
 4 files changed, 25 insertions(+)

diff --git a/common/api-review/app.api.md b/common/api-review/app.api.md
index 8d35bc4096f..52f134dac16 100644
--- a/common/api-review/app.api.md
+++ b/common/api-review/app.api.md
@@ -93,6 +93,9 @@ export function initializeApp(options: FirebaseOptions, name?: string): Firebase
 // @public
 export function initializeApp(options: FirebaseOptions, config?: FirebaseAppSettings): FirebaseApp;
 
+// @public
+export function initializeApp(): FirebaseApp;
+
 // @public
 export function onLog(logCallback: LogCallback | null, options?: LogOptions): void;
 
diff --git a/common/api-review/util.api.md b/common/api-review/util.api.md
index 25657980b0e..f81a0575142 100644
--- a/common/api-review/util.api.md
+++ b/common/api-review/util.api.md
@@ -195,6 +195,23 @@ export class FirebaseError extends Error {
 // @public
 export type FirebaseSignInProvider = 'custom' | 'email' | 'password' | 'phone' | 'anonymous' | 'google.com' | 'facebook.com' | 'github.com' | 'twitter.com' | 'microsoft.com' | 'apple.com';
 
+// Warning: (ae-missing-release-tag) "getDefaultAppConfig" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export const getDefaultAppConfig: () => Record<string, string> | undefined;
+
+// Warning: (ae-missing-release-tag) "getDefaultEmulatorHost" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export const getDefaultEmulatorHost: (name: string) => string | undefined;
+
+// Warning: (ae-forgotten-export) The symbol "ExperimentalKey" needs to be exported by the entry point index.d.ts
+// Warning: (ae-forgotten-export) The symbol "FirebaseDefaults" needs to be exported by the entry point index.d.ts
+// Warning: (ae-missing-release-tag) "getExperimentalSetting" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
+//
+// @public (undocumented)
+export const getExperimentalSetting: <T extends ExperimentalKey>(name: T) => FirebaseDefaults[`_${T}`];
+
 // Warning: (ae-missing-release-tag) "getGlobal" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
 // @public
diff --git a/packages/app-types/index.d.ts b/packages/app-types/index.d.ts
index 72b8fa68f9d..088c64fad63 100644
--- a/packages/app-types/index.d.ts
+++ b/packages/app-types/index.d.ts
@@ -74,6 +74,10 @@ export interface FirebaseNamespace {
    * omitted)
    */
   initializeApp(options: FirebaseOptions, name?: string): FirebaseApp;
+  /**
+   * Create (and initialize) a FirebaseApp.
+   */
+  initializeApp(): FirebaseApp;
 
   app: {
     /**
diff --git a/packages/firestore/externs.json b/packages/firestore/externs.json
index a4c36074978..fcd6408548c 100644
--- a/packages/firestore/externs.json
+++ b/packages/firestore/externs.json
@@ -26,6 +26,7 @@
     "packages/logger/dist/src/logger.d.ts",
     "packages/webchannel-wrapper/src/index.d.ts",
     "packages/util/dist/src/crypt.d.ts",
+    "packages/util/dist/src/defaults.d.ts",
     "packages/util/dist/src/emulator.d.ts",
     "packages/util/dist/src/environment.d.ts",
     "packages/util/dist/src/compat.d.ts",

From 4ad621362e0b1043d417bd617cc6afd26fce06a3 Mon Sep 17 00:00:00 2001
From: Christina Holland <hsubox@gmail.com>
Date: Mon, 26 Sep 2022 17:14:22 -0700
Subject: [PATCH 03/15] Changeset and formatting

---
 .changeset/mighty-insects-judge.md          | 12 ++++++++
 config/.eslintrc.js                         |  6 +++-
 packages/app/src/errors.ts                  |  3 +-
 packages/auth/src/platform_browser/index.ts | 32 ++++++++++++++-------
 packages/firestore/src/api/database.ts      | 16 +++++------
 packages/util/src/defaults.ts               |  4 +--
 6 files changed, 50 insertions(+), 23 deletions(-)
 create mode 100644 .changeset/mighty-insects-judge.md

diff --git a/.changeset/mighty-insects-judge.md b/.changeset/mighty-insects-judge.md
new file mode 100644
index 00000000000..ea01480e052
--- /dev/null
+++ b/.changeset/mighty-insects-judge.md
@@ -0,0 +1,12 @@
+---
+'@firebase/app': minor
+'@firebase/app-types': minor
+'@firebase/util': minor
+'@firebase/auth': patch
+'@firebase/database': patch
+'@firebase/firestore': patch
+'@firebase/functions': patch
+'@firebase/storage': patch
+---
+
+Add functionality to auto-initialize project config and emulator settings from global defaults provided by framework tooling.
diff --git a/config/.eslintrc.js b/config/.eslintrc.js
index 97f6df9be8f..4b71884c346 100644
--- a/config/.eslintrc.js
+++ b/config/.eslintrc.js
@@ -129,7 +129,11 @@ module.exports = {
       {
         // Check dependencies from both local package.json
         // and from root package.json.
-        'packageDir': [context.getFilename(), path.join(__dirname, '../'), './'],
+        'packageDir': [
+          context.getFilename(),
+          path.join(__dirname, '../'),
+          './'
+        ],
         'devDependencies': [
           '**/*.test.ts',
           '**/test/**/*.ts',
diff --git a/packages/app/src/errors.ts b/packages/app/src/errors.ts
index 8d6f5983ccf..6cd50e90942 100644
--- a/packages/app/src/errors.ts
+++ b/packages/app/src/errors.ts
@@ -39,7 +39,8 @@ const ERRORS: ErrorMap<AppError> = {
   [AppError.DUPLICATE_APP]:
     "Firebase App named '{$appName}' already exists with different options or config",
   [AppError.APP_DELETED]: "Firebase App named '{$appName}' already deleted",
-  [AppError.NO_OPTIONS]: "Need to provide options, when not being deployed to hosting via source.",
+  [AppError.NO_OPTIONS]:
+    'Need to provide options, when not being deployed to hosting via source.',
   [AppError.INVALID_APP_ARGUMENT]:
     'firebase.{$appName}() takes either no argument or a ' +
     'Firebase App instance.',
diff --git a/packages/auth/src/platform_browser/index.ts b/packages/auth/src/platform_browser/index.ts
index 102e503ba96..14fda37d580 100644
--- a/packages/auth/src/platform_browser/index.ts
+++ b/packages/auth/src/platform_browser/index.ts
@@ -17,7 +17,12 @@
 
 import { FirebaseApp, getApp, _getProvider } from '@firebase/app';
 
-import { initializeAuth, beforeAuthStateChanged, onIdTokenChanged, connectAuthEmulator } from '..';
+import {
+  initializeAuth,
+  beforeAuthStateChanged,
+  onIdTokenChanged,
+  connectAuthEmulator
+} from '..';
 import { registerAuth } from '../core/auth/register';
 import { ClientPlatform } from '../core/util/version';
 import { browserLocalPersistence } from './persistence/local_storage';
@@ -28,23 +33,28 @@ import { Auth, User } from '../model/public_types';
 import { getDefaultEmulatorHost, getExperimentalSetting } from '@firebase/util';
 
 const DEFAULT_ID_TOKEN_MAX_AGE = 5 * 60;
-const authIdTokenMaxAge = getExperimentalSetting('authIdTokenMaxAge') || DEFAULT_ID_TOKEN_MAX_AGE;
+const authIdTokenMaxAge =
+  getExperimentalSetting('authIdTokenMaxAge') || DEFAULT_ID_TOKEN_MAX_AGE;
 
-let lastPostedIdToken: string|undefined|null = null;
+let lastPostedIdToken: string | undefined | null = null;
 
-const mintCookieFactory = (url:string) => async (user: User|null) => {
-  const idTokenResult = user && await user.getIdTokenResult();
-  const idTokenAge = idTokenResult && (new Date().getTime() - Date.parse(idTokenResult.issuedAtTime)) / 1_000;
+const mintCookieFactory = (url: string) => async (user: User | null) => {
+  const idTokenResult = user && (await user.getIdTokenResult());
+  const idTokenAge =
+    idTokenResult &&
+    (new Date().getTime() - Date.parse(idTokenResult.issuedAtTime)) / 1_000;
   if (idTokenAge && idTokenAge > authIdTokenMaxAge) return;
   // Specifically trip null => undefined when logged out, to delete any existing cookie
   const idToken = idTokenResult?.token;
   if (lastPostedIdToken === idToken) return;
   lastPostedIdToken = idToken;
   await fetch(url, {
-      method: idToken ? 'POST' : 'DELETE',
-      headers: idToken ? {
-          'Authorization': `Bearer ${idToken}`,
-      } : {}
+    method: idToken ? 'POST' : 'DELETE',
+    headers: idToken
+      ? {
+          'Authorization': `Bearer ${idToken}`
+        }
+      : {}
   });
 };
 
@@ -76,7 +86,7 @@ export function getAuth(app: FirebaseApp = getApp()): Auth {
   if (authTokenSyncUrl) {
     const mintCookie = mintCookieFactory(authTokenSyncUrl);
     beforeAuthStateChanged(auth, mintCookie, () => {
-        mintCookie(auth.currentUser)
+      mintCookie(auth.currentUser);
     });
     onIdTokenChanged(auth, user => mintCookie(user));
   }
diff --git a/packages/firestore/src/api/database.ts b/packages/firestore/src/api/database.ts
index 6ffda1b044f..c9004a85426 100644
--- a/packages/firestore/src/api/database.ts
+++ b/packages/firestore/src/api/database.ts
@@ -164,9 +164,9 @@ export function initializeFirestore(
       throw new FirestoreError(
         Code.FAILED_PRECONDITION,
         'initializeFirestore() has already been called with ' +
-        'different options. To avoid this error, call initializeFirestore() with the ' +
-        'same options as when it was originally called, or call getFirestore() to return the' +
-        ' already initialized instance.'
+          'different options. To avoid this error, call initializeFirestore() with the ' +
+          'same options as when it was originally called, or call getFirestore() to return the' +
+          ' already initialized instance.'
       );
     }
   }
@@ -408,8 +408,8 @@ function setPersistenceProviders(
         }
         logWarn(
           'Error enabling offline persistence. Falling back to ' +
-          'persistence disabled: ' +
-          error
+            'persistence disabled: ' +
+            error
         );
         persistenceResult.reject(error);
       }
@@ -482,7 +482,7 @@ export function clearIndexedDbPersistence(firestore: Firestore): Promise<void> {
     throw new FirestoreError(
       Code.FAILED_PRECONDITION,
       'Persistence can only be cleared before a Firestore instance is ' +
-      'initialized or after it is terminated.'
+        'initialized or after it is terminated.'
     );
   }
 
@@ -638,8 +638,8 @@ function verifyNotInitialized(firestore: Firestore): void {
     throw new FirestoreError(
       Code.FAILED_PRECONDITION,
       'Firestore has already been started and persistence can no longer be ' +
-      'enabled. You can only enable persistence before calling any other ' +
-      'methods on a Firestore object.'
+        'enabled. You can only enable persistence before calling any other ' +
+        'methods on a Firestore object.'
     );
   }
 }
diff --git a/packages/util/src/defaults.ts b/packages/util/src/defaults.ts
index 0eb4a6a7f9f..3fcb1507397 100644
--- a/packages/util/src/defaults.ts
+++ b/packages/util/src/defaults.ts
@@ -50,8 +50,8 @@ const getDefaultsFromEnvVariable = (): FirebaseDefaults | undefined => {
     try {
       const json = require(jsonPath);
       return json;
-    } catch(e) {
-      `Unable to read defaults from file: ${jsonPath}.`
+    } catch (e) {
+      `Unable to read defaults from file: ${jsonPath}.`;
     }
   }
 };

From 3bf4ce6b7e0e46f3ca580697722cd81e7717f639 Mon Sep 17 00:00:00 2001
From: Christina Holland <hsubox@gmail.com>
Date: Mon, 26 Sep 2022 22:37:49 -0700
Subject: [PATCH 04/15] Revert eslintrc.js and add firebase minor bump

---
 .changeset/mighty-insects-judge.md | 1 +
 config/.eslintrc.js                | 6 +-----
 2 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/.changeset/mighty-insects-judge.md b/.changeset/mighty-insects-judge.md
index ea01480e052..701e3b28e27 100644
--- a/.changeset/mighty-insects-judge.md
+++ b/.changeset/mighty-insects-judge.md
@@ -7,6 +7,7 @@
 '@firebase/firestore': patch
 '@firebase/functions': patch
 '@firebase/storage': patch
+'firebase': minor
 ---
 
 Add functionality to auto-initialize project config and emulator settings from global defaults provided by framework tooling.
diff --git a/config/.eslintrc.js b/config/.eslintrc.js
index 4b71884c346..04de0f9d10c 100644
--- a/config/.eslintrc.js
+++ b/config/.eslintrc.js
@@ -129,11 +129,7 @@ module.exports = {
       {
         // Check dependencies from both local package.json
         // and from root package.json.
-        'packageDir': [
-          context.getFilename(),
-          path.join(__dirname, '../'),
-          './'
-        ],
+        'packageDir': [path.join(__dirname, '../'), './'],
         'devDependencies': [
           '**/*.test.ts',
           '**/test/**/*.ts',

From 5456dbfa0fb7c42c0d23c02954f91ddfaea28e1f Mon Sep 17 00:00:00 2001
From: hsubox76 <hsubox76@users.noreply.github.com>
Date: Tue, 27 Sep 2022 05:57:22 +0000
Subject: [PATCH 05/15] Update API reports

---
 common/api-review/firestore.api.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/common/api-review/firestore.api.md b/common/api-review/firestore.api.md
index 3b6538d867b..8cbe775d731 100644
--- a/common/api-review/firestore.api.md
+++ b/common/api-review/firestore.api.md
@@ -233,6 +233,9 @@ export function getFirestore(): Firestore;
 // @public
 export function getFirestore(app: FirebaseApp): Firestore;
 
+// @public
+export function getFirestore(): Firestore;
+
 // @public
 export function increment(n: number): FieldValue;
 

From f46b60f9ebb1de4ef6073b1d9149b145277e39d2 Mon Sep 17 00:00:00 2001
From: Christina Holland <hsubox@gmail.com>
Date: Tue, 27 Sep 2022 09:18:05 -0700
Subject: [PATCH 06/15] Fix some lint errors

---
 packages/auth/src/platform_browser/index.ts | 10 +++++-----
 packages/util/src/defaults.ts               |  3 ++-
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/packages/auth/src/platform_browser/index.ts b/packages/auth/src/platform_browser/index.ts
index 14fda37d580..6f6717819be 100644
--- a/packages/auth/src/platform_browser/index.ts
+++ b/packages/auth/src/platform_browser/index.ts
@@ -43,17 +43,17 @@ const mintCookieFactory = (url: string) => async (user: User | null) => {
   const idTokenAge =
     idTokenResult &&
     (new Date().getTime() - Date.parse(idTokenResult.issuedAtTime)) / 1_000;
-  if (idTokenAge && idTokenAge > authIdTokenMaxAge) return;
+  if (idTokenAge && idTokenAge > authIdTokenMaxAge) { return; }
   // Specifically trip null => undefined when logged out, to delete any existing cookie
   const idToken = idTokenResult?.token;
-  if (lastPostedIdToken === idToken) return;
+  if (lastPostedIdToken === idToken) { return; }
   lastPostedIdToken = idToken;
   await fetch(url, {
     method: idToken ? 'POST' : 'DELETE',
     headers: idToken
       ? {
-          'Authorization': `Bearer ${idToken}`
-        }
+        'Authorization': `Bearer ${idToken}`
+      }
       : {}
   });
 };
@@ -86,7 +86,7 @@ export function getAuth(app: FirebaseApp = getApp()): Auth {
   if (authTokenSyncUrl) {
     const mintCookie = mintCookieFactory(authTokenSyncUrl);
     beforeAuthStateChanged(auth, mintCookie, () => {
-      mintCookie(auth.currentUser);
+      void mintCookie(auth.currentUser);
     });
     onIdTokenChanged(auth, user => mintCookie(user));
   }
diff --git a/packages/util/src/defaults.ts b/packages/util/src/defaults.ts
index 3fcb1507397..ccbcb8e06c3 100644
--- a/packages/util/src/defaults.ts
+++ b/packages/util/src/defaults.ts
@@ -48,10 +48,11 @@ const getDefaultsFromEnvVariable = (): FirebaseDefaults | undefined => {
   const jsonPath = process.env.__FIREBASE_DEFAULTS_PATH__;
   if (jsonPath && typeof require !== 'undefined') {
     try {
+      // eslint-disable-next-line @typescript-eslint/no-require-imports
       const json = require(jsonPath);
       return json;
     } catch (e) {
-      `Unable to read defaults from file: ${jsonPath}.`;
+      console.warn(`Unable to read defaults from file: ${jsonPath}.`);
     }
   }
 };

From 89dfe97b7006e06a142633ddcedcb3166a0f2b07 Mon Sep 17 00:00:00 2001
From: Christina Holland <hsubox@gmail.com>
Date: Tue, 27 Sep 2022 09:26:53 -0700
Subject: [PATCH 07/15] formatting, again

---
 packages/auth/src/platform_browser/index.ts | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/packages/auth/src/platform_browser/index.ts b/packages/auth/src/platform_browser/index.ts
index 6f6717819be..5d4feb313bc 100644
--- a/packages/auth/src/platform_browser/index.ts
+++ b/packages/auth/src/platform_browser/index.ts
@@ -43,17 +43,21 @@ const mintCookieFactory = (url: string) => async (user: User | null) => {
   const idTokenAge =
     idTokenResult &&
     (new Date().getTime() - Date.parse(idTokenResult.issuedAtTime)) / 1_000;
-  if (idTokenAge && idTokenAge > authIdTokenMaxAge) { return; }
+  if (idTokenAge && idTokenAge > authIdTokenMaxAge) {
+    return;
+  }
   // Specifically trip null => undefined when logged out, to delete any existing cookie
   const idToken = idTokenResult?.token;
-  if (lastPostedIdToken === idToken) { return; }
+  if (lastPostedIdToken === idToken) {
+    return;
+  }
   lastPostedIdToken = idToken;
   await fetch(url, {
     method: idToken ? 'POST' : 'DELETE',
     headers: idToken
       ? {
-        'Authorization': `Bearer ${idToken}`
-      }
+          'Authorization': `Bearer ${idToken}`
+        }
       : {}
   });
 };

From 5cd1a55df4031796a8d45715b61bd77d825ffd8f Mon Sep 17 00:00:00 2001
From: Christina Holland <hsubox@gmail.com>
Date: Tue, 27 Sep 2022 10:12:51 -0700
Subject: [PATCH 08/15] Add back JSON string

---
 packages/util/src/defaults.ts | 25 ++++++++++++++++++++-----
 1 file changed, 20 insertions(+), 5 deletions(-)

diff --git a/packages/util/src/defaults.ts b/packages/util/src/defaults.ts
index ccbcb8e06c3..8b14cdee8b6 100644
--- a/packages/util/src/defaults.ts
+++ b/packages/util/src/defaults.ts
@@ -38,21 +38,36 @@ const getDefaultsFromGlobal = (): FirebaseDefaults | undefined =>
   getGlobal().__FIREBASE_DEFAULTS__;
 
 /**
- * Attempt to read defaults from a JSON file whose path is in
+ * Attempt to read defaults from a JSON string provided to
+ * process.env.__FIREBASE_DEFAULTS__ or a JSON file whose path is in
  * process.env.__FIREBASE_DEFAULTS_PATH__
  */
 const getDefaultsFromEnvVariable = (): FirebaseDefaults | undefined => {
   if (typeof process === 'undefined') {
     return;
   }
-  const jsonPath = process.env.__FIREBASE_DEFAULTS_PATH__;
-  if (jsonPath && typeof require !== 'undefined') {
+  const defaultsJsonString = process.env.__FIREBASE_DEFAULTS__;
+  const defaultsJsonPath = process.env.__FIREBASE_DEFAULTS_PATH__;
+  if (defaultsJsonString) {
+    if (defaultsJsonPath) {
+      console.warn(
+        `Values were provided for both __FIREBASE_DEFAULTS__ ` +
+          `and __FIREBASE_DEFAULTS_PATH__. __FIREBASE_DEFAULTS_PATH__ ` +
+          `will be ignored.`
+      );
+    }
+    return JSON.parse(defaultsJsonString);
+  }
+  if (defaultsJsonPath && typeof require !== 'undefined') {
     try {
       // eslint-disable-next-line @typescript-eslint/no-require-imports
-      const json = require(jsonPath);
+      const json = require(defaultsJsonPath);
       return json;
     } catch (e) {
-      console.warn(`Unable to read defaults from file: ${jsonPath}.`);
+      console.warn(
+        `Unable to read defaults from file provided to ` +
+          `__FIREBASE_DEFAULTS_PATH__: ${defaultsJsonPath}`
+      );
     }
   }
 };

From 6acc816cf0a286afd5d53e3031f3b3ac26821934 Mon Sep 17 00:00:00 2001
From: Christina Holland <hsubox@gmail.com>
Date: Tue, 27 Sep 2022 10:26:51 -0700
Subject: [PATCH 09/15] revert app-types

---
 packages/app-types/index.d.ts | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/packages/app-types/index.d.ts b/packages/app-types/index.d.ts
index 088c64fad63..72b8fa68f9d 100644
--- a/packages/app-types/index.d.ts
+++ b/packages/app-types/index.d.ts
@@ -74,10 +74,6 @@ export interface FirebaseNamespace {
    * omitted)
    */
   initializeApp(options: FirebaseOptions, name?: string): FirebaseApp;
-  /**
-   * Create (and initialize) a FirebaseApp.
-   */
-  initializeApp(): FirebaseApp;
 
   app: {
     /**

From c1757f7335d999c57b1e9a26d040803ff344a471 Mon Sep 17 00:00:00 2001
From: Christina Holland <hsubox@gmail.com>
Date: Tue, 27 Sep 2022 14:19:04 -0700
Subject: [PATCH 10/15] Remove unnecessary export

---
 packages/database/src/api/Database.ts | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/packages/database/src/api/Database.ts b/packages/database/src/api/Database.ts
index a0c2a816597..db0273b1721 100644
--- a/packages/database/src/api/Database.ts
+++ b/packages/database/src/api/Database.ts
@@ -54,10 +54,7 @@ import { WebSocketConnection } from '../realtime/WebSocketConnection';
 
 import { ReferenceImpl } from './Reference_impl';
 
-export {
-  EmulatorMockTokenOptions,
-  getDefaultEmulatorHost
-} from '@firebase/util';
+export { EmulatorMockTokenOptions } from '@firebase/util';
 /**
  * This variable is also defined in the firebase Node.js Admin SDK. Before
  * modifying this definition, consult the definition in:

From 4bc0bcf0654a55aaaef8ac5605b9d15cb9ed4255 Mon Sep 17 00:00:00 2001
From: Christina Holland <hsubox@gmail.com>
Date: Tue, 27 Sep 2022 15:10:52 -0700
Subject: [PATCH 11/15] Remove extra getFirestore()

---
 common/api-review/firestore.api.md     | 3 ---
 packages/firestore/src/api/database.ts | 8 --------
 2 files changed, 11 deletions(-)

diff --git a/common/api-review/firestore.api.md b/common/api-review/firestore.api.md
index 8cbe775d731..e3a60e64129 100644
--- a/common/api-review/firestore.api.md
+++ b/common/api-review/firestore.api.md
@@ -227,9 +227,6 @@ export function getDocsFromCache<T>(query: Query<T>): Promise<QuerySnapshot<T>>;
 // @public
 export function getDocsFromServer<T>(query: Query<T>): Promise<QuerySnapshot<T>>;
 
-// @public
-export function getFirestore(): Firestore;
-
 // @public
 export function getFirestore(app: FirebaseApp): Firestore;
 
diff --git a/packages/firestore/src/api/database.ts b/packages/firestore/src/api/database.ts
index c9004a85426..d61b1ffe21a 100644
--- a/packages/firestore/src/api/database.ts
+++ b/packages/firestore/src/api/database.ts
@@ -188,14 +188,6 @@ export function initializeFirestore(
   });
 }
 
-/**
- * Returns the existing default {@link Firestore} instance that is associated with the
- * default {@link @firebase/app#FirebaseApp}. If no instance exists, initializes a new
- * instance with default settings.
- *
- * @returns The {@link Firestore} instance of the provided app.
- */
-export function getFirestore(): Firestore;
 /**
  * Returns the existing default {@link Firestore} instance that is associated with the
  * provided {@link @firebase/app#FirebaseApp}. If no instance exists, initializes a new

From cf7b8fc49b6d89abb6bde6a961dfd85374234970 Mon Sep 17 00:00:00 2001
From: Christina Holland <hsubox@gmail.com>
Date: Tue, 27 Sep 2022 17:22:13 -0700
Subject: [PATCH 12/15] Add comments and public annotations, fix promise

---
 common/api-review/util.api.md               | 13 ++-----
 packages/auth/src/platform_browser/index.ts |  4 +-
 packages/util/src/defaults.ts               | 42 +++++++++++++++++++--
 3 files changed, 43 insertions(+), 16 deletions(-)

diff --git a/common/api-review/util.api.md b/common/api-review/util.api.md
index f81a0575142..f4846456a07 100644
--- a/common/api-review/util.api.md
+++ b/common/api-review/util.api.md
@@ -195,21 +195,16 @@ export class FirebaseError extends Error {
 // @public
 export type FirebaseSignInProvider = 'custom' | 'email' | 'password' | 'phone' | 'anonymous' | 'google.com' | 'facebook.com' | 'github.com' | 'twitter.com' | 'microsoft.com' | 'apple.com';
 
-// Warning: (ae-missing-release-tag) "getDefaultAppConfig" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
-//
-// @public (undocumented)
+// @public
 export const getDefaultAppConfig: () => Record<string, string> | undefined;
 
-// Warning: (ae-missing-release-tag) "getDefaultEmulatorHost" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
-//
-// @public (undocumented)
-export const getDefaultEmulatorHost: (name: string) => string | undefined;
+// @public
+export const getDefaultEmulatorHost: (productName: string) => string | undefined;
 
 // Warning: (ae-forgotten-export) The symbol "ExperimentalKey" needs to be exported by the entry point index.d.ts
 // Warning: (ae-forgotten-export) The symbol "FirebaseDefaults" needs to be exported by the entry point index.d.ts
-// Warning: (ae-missing-release-tag) "getExperimentalSetting" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
-// @public (undocumented)
+// @public
 export const getExperimentalSetting: <T extends ExperimentalKey>(name: T) => FirebaseDefaults[`_${T}`];
 
 // Warning: (ae-missing-release-tag) "getGlobal" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
diff --git a/packages/auth/src/platform_browser/index.ts b/packages/auth/src/platform_browser/index.ts
index 5d4feb313bc..8d9e675ecb8 100644
--- a/packages/auth/src/platform_browser/index.ts
+++ b/packages/auth/src/platform_browser/index.ts
@@ -89,9 +89,7 @@ export function getAuth(app: FirebaseApp = getApp()): Auth {
   const authTokenSyncUrl = getExperimentalSetting('authTokenSyncURL');
   if (authTokenSyncUrl) {
     const mintCookie = mintCookieFactory(authTokenSyncUrl);
-    beforeAuthStateChanged(auth, mintCookie, () => {
-      void mintCookie(auth.currentUser);
-    });
+    beforeAuthStateChanged(auth, mintCookie, () => mintCookie(auth.currentUser));
     onIdTokenChanged(auth, user => mintCookie(user));
   }
 
diff --git a/packages/util/src/defaults.ts b/packages/util/src/defaults.ts
index 8b14cdee8b6..1b79b5d99a8 100644
--- a/packages/util/src/defaults.ts
+++ b/packages/util/src/defaults.ts
@@ -18,9 +18,23 @@
 import { base64Decode } from './crypt';
 import { getGlobal } from './environment';
 
-type ExperimentalKey = 'authTokenSyncURL' | 'authIdTokenMaxAge';
+/**
+ * Keys for experimental properties on the `FirebaseDefaults` object.
+ * @public
+ */
+export type ExperimentalKey = 'authTokenSyncURL' | 'authIdTokenMaxAge';
 
-interface FirebaseDefaults {
+/**
+ * An object that can be injected into the environment as __FIREBASE_DEFAULTS__,
+ * either as a property of globalThis, a shell environment variable, or a
+ * cookie.
+ * 
+ * This object can be used to automatically configure and initialize
+ * a Firebase app as well as any emulators.
+ * 
+ * @public
+ */
+export interface FirebaseDefaults {
   config?: Record<string, string>;
   emulatorHosts?: Record<string, string>;
   _authTokenSyncURL?: string;
@@ -81,17 +95,37 @@ const getDefaultsFromCookie = (): FirebaseDefaults | undefined => {
   return decoded && JSON.parse(decoded);
 };
 
+/**
+ * Get the __FIREBASE_DEFAULTS__ object. It checks in order:
+ * (1) if such an object exists as a property of `globalThis`
+ * (2) if such an object was provided on a shell environment variable
+ * (3) if such an object exists in a cookie
+ */
 const getDefaults = (): FirebaseDefaults | undefined =>
   getDefaultsFromGlobal() ||
   getDefaultsFromEnvVariable() ||
   getDefaultsFromCookie();
 
-export const getDefaultEmulatorHost = (name: string): string | undefined =>
-  getDefaults()?.emulatorHosts?.[name];
+/**
+ * Returns emulator host stored in the __FIREBASE_DEFAULTS__ object
+ * for the given product.
+ * @public
+ */
+export const getDefaultEmulatorHost = (productName: string): string | undefined =>
+  getDefaults()?.emulatorHosts?.[productName];
 
+/**
+ * Returns Firebase app config stored in the __FIREBASE_DEFAULTS__ object.
+ * @public
+ */
 export const getDefaultAppConfig = (): Record<string, string> | undefined =>
   getDefaults()?.config;
 
+/**
+ * Returns an experimental setting on the __FIREBASE_DEFAULTS__ object (properties
+ * prefixed by "_")
+ * @public
+ */
 export const getExperimentalSetting = <T extends ExperimentalKey>(
   name: T
 ): FirebaseDefaults[`_${T}`] =>

From cd3f7e11785e4c85ac3a92e0dadafd57a40215d9 Mon Sep 17 00:00:00 2001
From: Christina Holland <hsubox@gmail.com>
Date: Wed, 28 Sep 2022 09:33:12 -0700
Subject: [PATCH 13/15] Formatting pass.

---
 packages/auth/src/platform_browser/index.ts | 4 +++-
 packages/util/src/defaults.ts               | 9 +++++----
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/packages/auth/src/platform_browser/index.ts b/packages/auth/src/platform_browser/index.ts
index 8d9e675ecb8..9bfe4e3b01a 100644
--- a/packages/auth/src/platform_browser/index.ts
+++ b/packages/auth/src/platform_browser/index.ts
@@ -89,7 +89,9 @@ export function getAuth(app: FirebaseApp = getApp()): Auth {
   const authTokenSyncUrl = getExperimentalSetting('authTokenSyncURL');
   if (authTokenSyncUrl) {
     const mintCookie = mintCookieFactory(authTokenSyncUrl);
-    beforeAuthStateChanged(auth, mintCookie, () => mintCookie(auth.currentUser));
+    beforeAuthStateChanged(auth, mintCookie, () =>
+      mintCookie(auth.currentUser)
+    );
     onIdTokenChanged(auth, user => mintCookie(user));
   }
 
diff --git a/packages/util/src/defaults.ts b/packages/util/src/defaults.ts
index 1b79b5d99a8..6acc5886b5c 100644
--- a/packages/util/src/defaults.ts
+++ b/packages/util/src/defaults.ts
@@ -28,10 +28,10 @@ export type ExperimentalKey = 'authTokenSyncURL' | 'authIdTokenMaxAge';
  * An object that can be injected into the environment as __FIREBASE_DEFAULTS__,
  * either as a property of globalThis, a shell environment variable, or a
  * cookie.
- * 
+ *
  * This object can be used to automatically configure and initialize
  * a Firebase app as well as any emulators.
- * 
+ *
  * @public
  */
 export interface FirebaseDefaults {
@@ -111,8 +111,9 @@ const getDefaults = (): FirebaseDefaults | undefined =>
  * for the given product.
  * @public
  */
-export const getDefaultEmulatorHost = (productName: string): string | undefined =>
-  getDefaults()?.emulatorHosts?.[productName];
+export const getDefaultEmulatorHost = (
+  productName: string
+): string | undefined => getDefaults()?.emulatorHosts?.[productName];
 
 /**
  * Returns Firebase app config stored in the __FIREBASE_DEFAULTS__ object.

From 28ab641175861dd37e1946d689ba407e4ae02d4e Mon Sep 17 00:00:00 2001
From: hsubox76 <hsubox76@users.noreply.github.com>
Date: Wed, 28 Sep 2022 17:01:58 +0000
Subject: [PATCH 14/15] Update API reports

---
 common/api-review/util.api.md | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/common/api-review/util.api.md b/common/api-review/util.api.md
index f4846456a07..57e18bd3d2b 100644
--- a/common/api-review/util.api.md
+++ b/common/api-review/util.api.md
@@ -173,11 +173,28 @@ export function errorPrefix(fnName: string, argName: string): string;
 // @public (undocumented)
 export type Executor<T> = (observer: Observer<T>) => void;
 
+// @public
+export type ExperimentalKey = 'authTokenSyncURL' | 'authIdTokenMaxAge';
+
 // Warning: (ae-missing-release-tag) "extractQuerystring" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
 // @public
 export function extractQuerystring(url: string): string;
 
+// @public
+export interface FirebaseDefaults {
+    // (undocumented)
+    [key: string]: unknown;
+    // (undocumented)
+    _authIdTokenMaxAge?: number;
+    // (undocumented)
+    _authTokenSyncURL?: string;
+    // (undocumented)
+    config?: Record<string, string>;
+    // (undocumented)
+    emulatorHosts?: Record<string, string>;
+}
+
 // Warning: (ae-missing-release-tag) "FirebaseError" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
 //
 // @public (undocumented)
@@ -201,9 +218,6 @@ export const getDefaultAppConfig: () => Record<string, string> | undefined;
 // @public
 export const getDefaultEmulatorHost: (productName: string) => string | undefined;
 
-// Warning: (ae-forgotten-export) The symbol "ExperimentalKey" needs to be exported by the entry point index.d.ts
-// Warning: (ae-forgotten-export) The symbol "FirebaseDefaults" needs to be exported by the entry point index.d.ts
-//
 // @public
 export const getExperimentalSetting: <T extends ExperimentalKey>(name: T) => FirebaseDefaults[`_${T}`];
 

From 87c03a4e9105ab0ead8b895f740f218a8b5d564c Mon Sep 17 00:00:00 2001
From: Christina Holland <hsubox@gmail.com>
Date: Wed, 28 Sep 2022 10:25:37 -0700
Subject: [PATCH 15/15] retrigger checks