# All files / functions get-id.ts

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     /**
     * @license
     * Copyright 2019 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.
     */

    import { FirebaseApp } from '@firebase/app-types';
    import { extractAppConfig } from '../helpers/extract-app-config';
    import { getInstallationEntry } from '../helpers/get-installation-entry';

    export async function getId(app: FirebaseApp): Promise<string> {
      const appConfig = extractAppConfig(app);
      const { installationEntry, registrationPromise } = await getInstallationEntry(
        appConfig
      );
      if (registrationPromise) {
        // Suppress registration errors as they are not a problem for getId.
        registrationPromise.catch(() => {});
      }
      return installationEntry.fid;
    }