/*! firebase-admin v10.0.0 */
/*!
 * Copyright 2021 Google Inc.
 *
 * 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.
 */
/**
 * Firebase Instance ID service.
 *
 * @packageDocumentation
 */
import { App } from '../app/index';
import { Installations } from './installations';
export { Installations };
/**
  * Gets the {@link Installations} service for the default app or a given app.
  *
  * `getInstallations()` can be called with no arguments to access the default
  * app's `Installations` service or as `getInstallations(app)` to access the
  * `Installations` service associated with a specific app.
  *
  * @example
  * ```javascript
  * // Get the Installations service for the default app
  * const defaultInstallations = getInstallations();
  * ```
  *
  * @example
  * ```javascript
  * // Get the Installations service for a given app
  * const otherInstallations = getInstallations(otherApp);
  *```
  *
  * @param app - Optional app whose `Installations` service to
  *   return. If not provided, the default `Installations` service will be
  *   returned.
  *
  * @returns The default `Installations` service if
  *   no app is provided or the `Installations` service associated with the
  *   provided app.
  */
export declare function getInstallations(app?: App): Installations;