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

packages/shared/objectIs.js

24 строки696 B

Andrew Clark

[Codemod] Update copyright header to Meta (#25315)

18 окт 2022, 18:19

18 окт 2022, 18:199cdf8a9

/**
 * 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.
 *
 * @flow
 */

/**
 * inlined Object.is polyfill to avoid requiring consumers ship their own
 * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is
 */
function is(x: any, y: any) {
  return (
    (x === y && (x !== 0 || 1 / x === 1 / y)) || (x !== x && y !== y) // eslint-disable-line no-self-compare
  );
}

const objectIs: (x: any, y: any) => boolean =
  // $FlowFixMe[method-unbinding]
  typeof Object.is === 'function' ? Object.is : is;

export default objectIs;