Update dev server to include Karma tests

Author: astralarya

server.js

@@ -4,17 +4,31 @@
 
 const PORT=8080;
 
+const webpack = require('webpack');
+const karma = require('karma');
+const express = require('express');
+const colors = require('colors');
+const os = require('os');
 
-// Webpack build server
-var webpack = require('webpack');
-var config = require('./webpack.config.js');
-var compiler = webpack(config);
-var colors = require('colors');
+// Status logging
+function serverStatus() {
+	console.log("Server listening on:")
+	console.log(colors.cyan(`http://localhost:${PORT}`));
 
-var logSemaphore = 0;
-compiler.watch({},function(err,stats) {
-	console.log(stats.toString({colors:true,chunks:false,children:false}));
+	let ifaces = os.networkInterfaces();
+	Object.keys(ifaces).forEach(function (ifname) {
+		ifaces[ifname].forEach(function (iface) {
+			if ('IPv4' === iface.family && iface.internal === false) {
+				console.log(colors.cyan(`http://${iface.address}:${PORT}`));
+			}
+		});
+	});
+}
+let logSemaphore = 0;
+function logStart() {
 	logSemaphore++;
+}
+function logEnd() {
 	setTimeout(function() {
 		logSemaphore--;
 		if(logSemaphore == 0) {
@@ -23,32 +37,37 @@ compiler.watch({},function(err,stats) {
 			console.log();
 		}
 	},100);
+}
+
+// Webpack build server
+let compiler = webpack(require('./webpack.config.js'));
+compiler.watch({},function(err,stats) {
+	console.log(stats.toString({colors:true,chunks:false,children:false}));
+	logStart();
+	logEnd();
+});
+
+// Karma test server
+let karmaServer = new karma.Server({
+	configFile: `${__dirname}/karma.conf.js`,
+	singleRun: false,
+});
+karmaServer.on('run_start', function() {
+	logStart();
 });
+karmaServer.on('run_complete', function() {
+	logEnd();
+});
+karmaServer.start();
 
 // Express web server
-var express = require('express');
-var app = express();
-var os = require('os');
-var ifaces = os.networkInterfaces();
+let app = express();
 
-app.use('/dist', express.static(__dirname + '/dev/dist'));
+app.use('/dist', express.static(`${__dirname}/dev/dist`));
 app.get('/', function(req, res) {
-	res.sendFile(__dirname + '/dev/index.html');
+	res.sendFile(`${dirname}/dev/index.html`);
 });
 
 app.listen(PORT, function() {
 	serverStatus();
 });
-
-function serverStatus() {
-	console.log("Server listening on:")
-	console.log(colors.cyan("http://localhost:%s"), PORT);
-
-	Object.keys(ifaces).forEach(function (ifname) {
-		ifaces[ifname].forEach(function (iface) {
-			if ('IPv4' === iface.family && iface.internal === false) {
-				console.log(colors.cyan("http://%s:%s"), iface.address, PORT);
-			}
-		});
-	});
-}