diff options
Diffstat (limited to 'node_modules/when/lib/decorators/unhandledRejection.js')
| -rw-r--r-- | node_modules/when/lib/decorators/unhandledRejection.js | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/node_modules/when/lib/decorators/unhandledRejection.js b/node_modules/when/lib/decorators/unhandledRejection.js new file mode 100644 index 00000000..72f7e20c --- /dev/null +++ b/node_modules/when/lib/decorators/unhandledRejection.js @@ -0,0 +1,85 @@ +/** @license MIT License (c) copyright 2010-2014 original author or authors */ +/** @author Brian Cavalier */ +/** @author John Hann */ + +(function(define) { 'use strict'; +define(function(require) { + + var setTimer = require('../env').setTimer; + var format = require('../format'); + + return function unhandledRejection(Promise) { + var logError = noop; + var logInfo = noop; + var localConsole; + + if(typeof console !== 'undefined') { + // Alias console to prevent things like uglify's drop_console option from + // removing console.log/error. Unhandled rejections fall into the same + // category as uncaught exceptions, and build tools shouldn't silence them. + localConsole = console; + logError = typeof localConsole.error !== 'undefined' + ? function (e) { localConsole.error(e); } + : function (e) { localConsole.log(e); }; + + logInfo = typeof localConsole.info !== 'undefined' + ? function (e) { localConsole.info(e); } + : function (e) { localConsole.log(e); }; + } + + Promise.onPotentiallyUnhandledRejection = function(rejection) { + enqueue(report, rejection); + }; + + Promise.onPotentiallyUnhandledRejectionHandled = function(rejection) { + enqueue(unreport, rejection); + }; + + Promise.onFatalRejection = function(rejection) { + enqueue(throwit, rejection.value); + }; + + var tasks = []; + var reported = []; + var running = null; + + function report(r) { + if(!r.handled) { + reported.push(r); + logError('Potentially unhandled rejection [' + r.id + '] ' + format.formatError(r.value)); + } + } + + function unreport(r) { + var i = reported.indexOf(r); + if(i >= 0) { + reported.splice(i, 1); + logInfo('Handled previous rejection [' + r.id + '] ' + format.formatObject(r.value)); + } + } + + function enqueue(f, x) { + tasks.push(f, x); + if(running === null) { + running = setTimer(flush, 0); + } + } + + function flush() { + running = null; + while(tasks.length > 0) { + tasks.shift()(tasks.shift()); + } + } + + return Promise; + }; + + function throwit(e) { + throw e; + } + + function noop() {} + +}); +}(typeof define === 'function' && define.amd ? define : function(factory) { module.exports = factory(require); })); |
