/**
 * @license
 * Copyright 2019 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 { _FirebaseNamespace } from './types';
import { FirebaseAppImpl } from './firebaseApp';
import { FirebaseAppLiteImpl } from './lite/firebaseAppLite';
/**
 * Because auth can't share code with other components, we attach the utility functions
 * in an internal namespace to share code.
 * This function return a firebase namespace object without
 * any utility functions, so it can be shared between the regular firebaseNamespace and
 * the lite version.
 */
export declare function createFirebaseNamespaceCore(firebaseAppImpl: typeof FirebaseAppImpl | typeof FirebaseAppLiteImpl): _FirebaseNamespace;