recoil/cjs/util/Recoil_mapMap.js.flow

Recoil - A state management library for React

/**
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @emails oncall+recoil
 * @flow strict
 * @format
 */
'use strict';
/**
 * Returns a new Map object with the same keys as the original, but with the
 * values replaced with the output of the given callback function.
 */

declare function mapMap<TKey, TValue, TValueOut>(map: $ReadOnlyMap<TKey, TValue>, callback: (value: TValue, key: TKey) => TValueOut): Map<TKey, TValueOut>;
module.exports = mapMap;