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591217ea7d
Summary: This pull request fixes cases where the `error` argument of the `onUnhandled` method in `Libraries/Promise.js` is undefined. Previously this would result in a redbox with the helpful message: `Cannot read property message of undefined`. With this pull request, unhandled promise rejections result in the desired yellowbox saying that a promise rejection went unhandled. I still do not know what would cause the error argument to be undefined, but this change makes the module behave as expected in an app I am building. cc bestander Relevant issue: #8452 Closes https://github.com/facebook/react-native/pull/9119 Differential Revision: D3655589 Pulled By: bestander fbshipit-source-id: a975a0ab58701240ba06574c04521cd542700ff7
38 lines
1.1 KiB
JavaScript
38 lines
1.1 KiB
JavaScript
/**
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* Copyright (c) 2016-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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* @providesModule Promise
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* @flow
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*/
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'use strict';
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const Promise = require('fbjs/lib/Promise.native');
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if (__DEV__) {
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require('promise/setimmediate/rejection-tracking').enable({
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allRejections: true,
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onUnhandled: (id, error = {}) => {
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const {message = null, stack = null} = error;
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const warning =
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`Possible Unhandled Promise Rejection (id: ${id}):\n` +
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(message == null ? '' : `${message}\n`) +
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(stack == null ? '' : stack);
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console.warn(warning);
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},
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onHandled: (id) => {
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const warning =
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`Promise Rejection Handled (id: ${id})\n` +
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'This means you can ignore any previous messages of the form ' +
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`"Possible Unhandled Promise Rejection (id: ${id}):"`;
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console.warn(warning);
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},
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});
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}
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module.exports = Promise;
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