async node

emitter.js

@@ -0,0 +1,45 @@
+
+
+   var Emitter = function() {
+	this.events = {};
+	this.on = function(event,listener){
+		if(typeof this.events[event] !== 'object') {
+			this.events[event] = [];
+		};
+		this.events[event].push(listener);
+		console.log(this.events)
+	};
+
+	this.removeListener = function(event,listener) {
+		var idx;
+		if (typeof this.events[event] === 'object'){
+				idx = this.events[event].indexOf(listener)
+			if (idx > -1) {
+				this.events[event].splice(idx,1);
+			}
+		}
+	};
+	this.emit = function(event) {
+		if (typeof this.events[event] === 'object'){
+		listeners = this.events[event].slice();
+		length = listeners.length;
+		for (i = 0; i < listeners.length; i++) {
+			listeners[i].apply();
+		}
+		}
+
+	};
+
+	this.removeAllListeners = function(event){
+		if(typeof this.events === 'object'){
+			this.events[event] = [];
+		}
+
+	};
+
+
+}
+
+
+module.exports = Emitter
+

fsp.js

@@ -0,0 +1,56 @@
+var fs = require('fs')
+
+
+var fsp = {
+readFile: function(filename){
+	return new Promise(function(resolve, reject){
+		fs.readFile(filename, "utf8", function(error,data){
+if (error) {
+	reject("error");
+} else {
+	resolve(data)
+}
+});		
+	})
+}
+,
+writeFile: function(file,msg){
+	return new Promise(function(resolve,reject){
+		fs.writeFile(file,msg, function(err){
+	if (err){
+		reject(err) 
+	}
+	 else {
+		resolve(fsp.readFile(file))
+	}
+
+})
+	})
+},
+appendFile: function(file,msg){
+	return new Promise(function(resolve,reject){
+		fs.appendFile(file,msg, function(err){
+		if(file && msg)
+		{
+			resolve(fsp.readFile(file))
+		} 
+
+			else {reject(err) }
+
+
+			})
+		})
+
+
+	}
+};
+fsp.appendFile("texts.txt", "hellos").then(function(result){
+	console.log(result)}).catch(function(err){console.error(err)})
+
+
+
+
+
+
+
+module.exports = fsp

index.js

@@ -0,0 +1,17 @@
+
+
+var Emitter = require('./emitter.js');
+var emitter = new Emitter()
+
+var speaking = function(){
+	console.log("hadflk")
+}
+var crying = function(){
+	console.log("adfs")
+}
+emitter.on("blinking", speaking)
+emitter.on("test", speaking)
+emitter.on("test", crying)
+
+emitter.emit("blinking")
+

text.txt

@@ -0,0 +1,3 @@
+fadslfjalsdkjf lksadjflk;asdjfkl ;sad
+j’alsdjf;ladsjf l;akdjsf
+had sfkl

texts.txt

@@ -0,0 +1 @@
+hellohelloshellos

warmup.js

@@ -0,0 +1,71 @@
+var mes = new Promise(function(resolve,reject) {
+var del = setTimeout(function(){
+resolve('Hello Promise!');}, 1000);
+});
+
+
+mes.then(function(message){
+console.log(message);
+
+});
+
+var delay = function(milliseconds){
+	 return new Promise(function(resolve,reject){
+	 	setTimeout(function(){
+	 	resolve(milliseconds);}, milliseconds)
+})
+	};
+
+var countDown = function(msg){
+if (msg === 0) {
+	return "Done!"
+}
+console.log(msg)
+msg -=100
+return delay(msg)
+
+};
+
+
+var squares = function(num){
+var nums = num*num
+return new Promise(function(resolve,reject){
+	if (num >= 0) {
+	resolve(num*num) } else {
+	reject("empty") }
+
+})
+
+}
+squares().then(function(result){
+ console.log(result)}).catch(function(err){console.error(err)
+
+ })
+
+
+
+var numb = [1,2,3,4,5,6,7,8,9]
+
+var numb = numb.map(function(i){
+
+return squares(i);
+});
+
+Promise.all(numb).then(function(results){
+	console.log(results)
+
+})
+
+var doBadThing = function(forRealz){
+	return new Promise(function(resolve,reject){
+if (forRealz){
+	reject("Errors")
+} else {
+	resolve("Yay!")
+}
+})
+}
+
+doBadThing().then(function(result){console.log(result)}).catch(function(err){throw "error!"})
+
+module.exports = squares()