Anup Bishnoi asyncanup

Why you need assertions

It's better to fail with your own error than undefined is not a function.

A simple assertion solution would let your application fail early and fail at the right point in runtime execution. Allowing you to handle it better.

	const fs = require('fs');
	function tree(dir, shortName = dir, prefix = '') {
	const ls = fs.readdirSync(dir);
	const isDir = ls.map(item => fs.statSync(`${dir}/${item}`).isDirectory());
	const files = ls.filter((item, index) => !isDir[index]);
	const dirs = ls.filter((item, index) => isDir[index]);
	const filesPrefix = prefix + ' ';
	console.log();
	console.log(`${prefix}${shortName \|\| '.'}/`);
	if (files.length) {

	<style id="jsbin-css">
	body {
	font: 14px "Century Gothic", Futura, sans-serif;
	margin: 20px;
	}

	ol, ul {
	padding-left: 30px;
	}

	var fs = require('fs'),
	UglifyJS = require('uglify-js');
	var express = require('express'),
	app = express();

	var repo = process.argv[2];
	var html = fs.readFileSync(__dirname + '/' + repo + '/build/index.html').toString();
	var js = UglifyJS.minify(__dirname + '/' + repo + '/build/' + repo + '.bundle.js').code;
	//js = fs.readFileSync(__dirname + '/' + repo + '/build/' + repo + '.bundle.js').toString();
	html = html.replace('<script src="' + repo + '.bundle.js"></script>', '<script>' + js + '</script>');

	#!/usr/bin/env coffee

	fs = require 'fs'
	sh = require 'execSync'

	config = require './package.json'

	name = config.name = "#{config.name}-semver"
	version = config.version = config.version.replace(/\./g, '') + '.0.0'

	var assert = require('assert'),
	http = require('http'),
	sockets = require('socket.io'),
	socketClient = require('socket.io-client');

	describe('Socket.io', function () {
	it('should take / as the default namespace', function (done) {
	var port = 5001,
	io = sockets.listen(port);