/**
 * 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 { NodeKey } from './Recoil_State'; // eslint-disable-next-line no-unused-vars

declare class AbstractRecoilValue<+T> {
  key: NodeKey,
  constructor(newKey: NodeKey): any,
}
declare class RecoilState<T> extends AbstractRecoilValue<T> {}
declare class RecoilValueReadOnly<+T> extends AbstractRecoilValue<T> {}
export type RecoilValue<T> = RecoilValueReadOnly<T> | RecoilState<T>;
declare function isRecoilValue(x: mixed): boolean;
module.exports = {
  AbstractRecoilValue,
  RecoilState,
  RecoilValueReadOnly,
  isRecoilValue
};