mattermost-redux
Version:
Common code (API client, Redux stores, logic, utility functions) for building a Mattermost client
31 lines (30 loc) • 875 B
TypeScript
/**
* Copyright (c) 2013-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
*/
/**
* Constructs an enumeration with keys equal to their value.
*
* For example:
*
* var COLORS = keyMirror({blue: null, red: null});
* var myColor = COLORS.blue;
* var isColorValid = !!COLORS[myColor];
*
* The last line could not be performed if the values of the generated enum were
* not equal to their keys.
*
* Input: {key1: val1, key2: val2}
* Output: {key1: key1, key2: key2}
*
* @param {object} obj
* @return {object}
*/
export default function keyMirror<T extends Record<string, unknown>>(obj: T): {
[K in keyof T]: K;
};