57 lines
1.9 KiB
JavaScript
57 lines
1.9 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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/* $FlowFixMe(>=0.54.0 site=react_native_oss) This comment suppresses an error
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* found when Flow v0.54 was deployed. To see the error delete this comment and
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* run Flow. */
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const Promise = require('fbjs/lib/Promise.native');
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if (__DEV__) {
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/* $FlowFixMe(>=0.54.0 site=react_native_oss) This comment suppresses an
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* error found when Flow v0.54 was deployed. To see the error delete this
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* comment and run Flow. */
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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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let message: string;
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let stack: ?string;
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const stringValue = Object.prototype.toString.call(error);
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if (stringValue === '[object Error]') {
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message = Error.prototype.toString.call(error);
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stack = error.stack;
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} else {
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/* $FlowFixMe(>=0.54.0 site=react_native_oss) This comment suppresses
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* an error found when Flow v0.54 was deployed. To see the error delete
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* this comment and run Flow. */
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message = require('pretty-format')(error);
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}
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const warning =
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`Possible Unhandled Promise Rejection (id: ${id}):\n` +
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`${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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