githubmr/facebook-react: The library for web and native user interfaces.

packages/shared/ReactInstanceMap.js

37 строк1 KB

Dan Abramov

Rename internal fields (#18377)

24 мар 2020, 21:19

24 мар 2020, 21:192ba43ed

/**
 * 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.
 */

/**
 * `ReactInstanceMap` maintains a mapping from a public facing stateful
 * instance (key) and the internal representation (value). This allows public
 * methods to accept the user facing instance as an argument and map them back
 * to internal methods.
 *
 * Note that this module is currently shared and assumed to be stateless.
 * If this becomes an actual Map, that will break.
 */

/**
 * This API should be called `delete` but we'd have to make sure to always
 * transform these to strings for IE support. When this transform is fully
 * supported we can rename it.
 */
export function remove(key) {
  key._reactInternals = undefined;
}

export function get(key) {
  return key._reactInternals;
}

export function has(key) {
  return key._reactInternals !== undefined;
}

export function set(key, value) {
  key._reactInternals = value;
}