mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Tim Yung
1977dd6596
Summary: Pull Request resolved: https://github.com/facebook/react-native/pull/51554 Sorts pragma directives file headers in React Native. Changelog: [Internal] Reviewed By: SamChou19815 Differential Revision: D75264593 fbshipit-source-id: 9e4b253dd0fc94dc2fc469d7114b93a8aae305f4
42 lines
1.2 KiB
JavaScript
42 lines
1.2 KiB
JavaScript
/**
|
|
* 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
|
|
* @format
|
|
*/
|
|
|
|
'use strict';
|
|
|
|
let resolvedPromise;
|
|
|
|
/**
|
|
* Polyfill for the microtask queueing API defined by WHATWG HTML spec.
|
|
* https://html.spec.whatwg.org/multipage/timers-and-user-prompts.html#dom-queuemicrotask
|
|
*
|
|
* The method must queue a microtask to invoke @param {function} callback, and
|
|
* if the callback throws an exception, report the exception.
|
|
*/
|
|
export default function queueMicrotask(callback: Function) {
|
|
if (arguments.length < 1) {
|
|
throw new TypeError(
|
|
'queueMicrotask must be called with at least one argument (a function to call)',
|
|
);
|
|
}
|
|
if (typeof callback !== 'function') {
|
|
throw new TypeError('The argument to queueMicrotask must be a function.');
|
|
}
|
|
|
|
// Try to reuse a lazily allocated resolved promise from closure.
|
|
(resolvedPromise || (resolvedPromise = Promise.resolve()))
|
|
.then(callback)
|
|
.catch(error =>
|
|
// Report the exception until the next tick.
|
|
setTimeout(() => {
|
|
throw error;
|
|
}, 0),
|
|
);
|
|
}
|