ReactInstanceMap.js — react Source File

Architecture documentation for ReactInstanceMap.js, a javascript file in the react codebase.

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Source Code

/**
 * Copyright (c) Meta Platforms, Inc. and 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.
 */

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

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