recoil/cjs/caches/Recoil_NodeCache.js.flow

Recoil - A state management library for React

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

import type { Loadable } from '../adt/Recoil_Loadable';
import type { NodeKey } from '../core/Recoil_State';
import type { TreeCacheNode } from './Recoil_TreeNodeCache';
export type NodeCacheRoute = Array<[NodeKey, mixed]>;
export type GetNodeValue = (nodeKey: NodeKey) => mixed;
export type Handlers = ?{
  onCacheHit?: (NodeKey) => void
};
export type NodeCache<+T> = $ReadOnly<{
  get: (GetNodeValue, Handlers) => Loadable<T> | void,
  set: (NodeCacheRoute, Loadable<T>) => void,
  getRoot: () => {
    route: NodeCacheRoute,
    value: Loadable<T>,
  } | TreeCacheNode<T>,
}>;