react-native/Libraries/Promise.js

58 lines
1.7 KiB
JavaScript

/**
*
* Copyright 2013-2014 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* @providesModule Promise
*
* This module wraps and augments the minimally ES6-compliant Promise
* implementation provided by the promise npm package.
*/
'use strict';
global.setImmediate = require('setImmediate');
var Promise = require('promise/setimmediate/es6-extensions');
require('promise/setimmediate/done');
if (__DEV__) {
require('promise/setimmediate/rejection-tracking').enable({
allRejections: true,
onUnhandled: (id, error) => {
const {message, stack} = error;
const warning =
`Possible Unhandled Promise Rejection (id: ${id}):\n` +
(message == null ? '' : `${message}\n`) +
(stack == null ? '' : stack);
console.warn(warning);
},
onHandled: (id) => {
const warning =
`Promise Rejection Handled (id: ${id})\n` +
'This means you can ignore any previous messages of the form ' +
`"Possible Unhandled Promise Rejection (id: ${id}):"`;
console.warn(warning);
},
});
}
/**
* Handle either fulfillment or rejection with the same callback.
*/
Promise.prototype.finally = function(onSettled) {
return this.then(onSettled, onSettled);
};
module.exports = Promise;