/**
 * 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';

import type { CacheImplementation } from './Recoil_CacheImplementationType';
import type { CachePolicy, EqualityPolicy, EvictionPolicy } from './Recoil_CachePolicy';

const {
  LRUCache
} = require('./Recoil_LRUCache');

const {
  MapCache
} = require('./Recoil_MapCache');

const err = require('recoil-shared/util/Recoil_err');

const nullthrows = require('recoil-shared/util/Recoil_nullthrows');

const stableStringify = require('recoil-shared/util/Recoil_stableStringify');

const defaultPolicy = {
  equality: 'reference',
  eviction: 'none',
  maxSize: Infinity
};
declare function cacheFromPolicy<K, V>(arg0: CachePolicy): CacheImplementation<K, V>;
declare function getValueMapper(equality: EqualityPolicy): (mixed) => mixed;
declare function getCache<K, V>(eviction: EvictionPolicy, maxSize: ?number, mapKey: (mixed) => mixed): CacheImplementation<K, V>;
module.exports = cacheFromPolicy;