/**
 * @license
 * Copyright 2020 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 { RemoteConfig } from './public_types';
/**
 *
 * Performs fetch and activate operations, as a convenience.
 *
 * @param remoteConfig - The {@link RemoteConfig} instance.
 *
 * @returns A `Promise` which resolves to true if the current call activated the fetched configs.
 * If the fetched configs were already activated, the `Promise` will resolve to false.
 *
 * @public
 */
export declare function fetchAndActivate(remoteConfig: RemoteConfig): Promise<boolean>;
/**
 * This method provides two different checks:
 *
 * 1. Check if IndexedDB exists in the browser environment.
 * 2. Check if the current browser context allows IndexedDB `open()` calls.
 *
 * @returns A `Promise` which resolves to true if a {@link RemoteConfig} instance
 * can be initialized in this environment, or false if it cannot.
 * @public
 */
export declare function isSupported(): Promise<boolean>;