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const EventEmitter = require('events');

const event = new EventEmitter();

// 添加一个事件监听器
event.on('bar', function() {
  console.log('bar fired!');
})

// 触发一个事件

MarkoCen

{
    "parserOptions": {
        "ecmaVersion": 6,
        "sourceType": "module",
        "ecmaFeatures": {
            "jsx": true
        }
    },
    "env": {
        "es6": true,

MarkoCen

function isPromise(object){
  if(Promise && Promise.resolve){
    return Promise.resolve(object) == object;
  }else{
    throw "Promise not supported in your environment"
  }
}

var i = 1;
var p = new Promise(function(resolve,reject){

MarkoCen

---

使用Gulp自动化处理发布流程

当Angular应用发布时，开发者需要考虑以下问题：

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import * as express from 'express';
import * as fs from 'fs';
import * as path from 'path';

const app = express();

app.set('view engine', 'jade');

app.get('/readPNG', (req, res)=>{
    

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(function () { 
    var root = angular.element(document.querySelectorAll("body"));

    var totalWatchers = [];

    //通过data()方法找到DOM对应的$scope, 轮询所有子$scope的$$watchers数量
    var calcWatcher = function (element) {
        angular.forEach(['$scope', '$isolateScope'], function (scope) { 
            if (element.data() && element.data().hasOwnProperty(scope)) {
                angular.forEach(element.data()[scope].$$watchers, function (watcher) {