86 lines
2.1 KiB
JavaScript
86 lines
2.1 KiB
JavaScript
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/** @license MIT License (c) copyright 2010-2014 original author or authors */
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/** @author Brian Cavalier */
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/** @author John Hann */
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(function(define) { 'use strict';
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define(function(require) {
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var setTimer = require('../env').setTimer;
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var format = require('../format');
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return function unhandledRejection(Promise) {
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var logError = noop;
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var logInfo = noop;
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var localConsole;
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if(typeof console !== 'undefined') {
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// Alias console to prevent things like uglify's drop_console option from
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// removing console.log/error. Unhandled rejections fall into the same
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// category as uncaught exceptions, and build tools shouldn't silence them.
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localConsole = console;
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logError = typeof localConsole.error !== 'undefined'
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? function (e) { localConsole.error(e); }
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: function (e) { localConsole.log(e); };
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logInfo = typeof localConsole.info !== 'undefined'
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? function (e) { localConsole.info(e); }
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: function (e) { localConsole.log(e); };
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}
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Promise.onPotentiallyUnhandledRejection = function(rejection) {
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enqueue(report, rejection);
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};
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Promise.onPotentiallyUnhandledRejectionHandled = function(rejection) {
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enqueue(unreport, rejection);
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};
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Promise.onFatalRejection = function(rejection) {
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enqueue(throwit, rejection.value);
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};
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var tasks = [];
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var reported = [];
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var running = null;
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function report(r) {
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if(!r.handled) {
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reported.push(r);
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logError('Potentially unhandled rejection [' + r.id + '] ' + format.formatError(r.value));
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}
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}
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function unreport(r) {
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var i = reported.indexOf(r);
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if(i >= 0) {
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reported.splice(i, 1);
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logInfo('Handled previous rejection [' + r.id + '] ' + format.formatObject(r.value));
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}
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}
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function enqueue(f, x) {
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tasks.push(f, x);
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if(running === null) {
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running = setTimer(flush, 0);
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}
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}
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function flush() {
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running = null;
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while(tasks.length > 0) {
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tasks.shift()(tasks.shift());
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}
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}
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return Promise;
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};
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function throwit(e) {
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throw e;
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}
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function noop() {}
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});
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}(typeof define === 'function' && define.amd ? define : function(factory) { module.exports = factory(require); }));
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