/**
 * @license
 * Copyright 2017 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 '@firebase/installations';
import { FirebaseMessaging } from '@firebase/messaging-types';
/**
 * Define extension behavior of `registerMessaging`
 */
declare module '@firebase/app-types' {
    interface FirebaseNamespace {
        messaging: {
            (app?: FirebaseApp): FirebaseMessaging;
            isSupported(): boolean;
        };
    }
    interface FirebaseApp {
        messaging(): FirebaseMessaging;
    }
}