mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Xuan Huang
ff4b33672a
Summary: Changelog: [Internal] This diff add a flow libdefs for the `HermesInternalType` to type `HermesInternal` as the first accurately typed `global` property, and filled all the type holes. Reviewed By: yungsters Differential Revision: D29986749 fbshipit-source-id: a94be7919f989b5085f6b264e55145a85020fea9
39 lines
1.1 KiB
JavaScript
39 lines
1.1 KiB
JavaScript
/**
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @flow strict
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* @format
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*/
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'use strict';
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const {polyfillGlobal} = require('../Utilities/PolyfillFunctions');
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/**
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* Set up Promise. The native Promise implementation throws the following error:
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* ERROR: Event loop not supported.
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*
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* If you don't need these polyfills, don't use InitializeCore; just directly
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* require the modules you need from InitializeCore for setup.
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*/
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// If global.Promise is provided by Hermes, we are confident that it can provide
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// all the methods needed by React Native, so we can directly use it.
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if (global?.HermesInternal?.hasPromise?.()) {
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const HermesPromise = global.Promise;
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if (__DEV__) {
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if (typeof HermesPromise !== 'function') {
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console.error('HermesPromise does not exist');
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}
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global.HermesInternal?.enablePromiseRejectionTracker?.(
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require('../promiseRejectionTrackingOptions').default,
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);
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}
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} else {
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polyfillGlobal('Promise', () => require('../Promise'));
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}
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