/**
 * (c) Facebook, Inc. and its affiliates. Confidential and proprietary.
 *
 * @emails oncall+recoil
 * @flow strict-local
 * @format
 */
'use strict';

import type { Handlers } from 'Recoil_NodeCache';
import type { Loadable } from '../adt/Recoil_Loadable';
import type { NodeKey } from '../core/Recoil_State';
import type { GetNodeValue, NodeCacheRoute } from './Recoil_NodeCache';

const invariant = require('../util/Recoil_invariant');

export type TreeCacheNode<T> = TreeCacheResult<T> | TreeCacheBranch<T>;
export type TreeCacheResult<T> = {
  type: 'result',
  result: Loadable<T>,
};
export type TreeCacheBranch<T> = {
  type: 'branch',
  nodeKey: NodeKey,
  branches: Map<mixed, TreeCacheNode<T>>,
};
declare function setInTreeCache<T>(root: ?TreeCacheNode<T>, route: NodeCacheRoute, result: Loadable<T>): TreeCacheNode<T>;
declare function getFromTreeCache<T>(root: ?TreeCacheNode<T>, getNodeValue: GetNodeValue, handlers: Handlers): Loadable<T> | void;
module.exports = {
  setInTreeCache,
  getFromTreeCache
};