Johnny Reading jreading

Debugging ES6 in VS Code

My current editor of choice for all things related to Javascript and Node is VS Code, which I highly recommend. The other day I needed to hunt down a bug in one of my tests written in ES6, which at time of writing is not fully supported in Node. Shortly after, I found myself down the rabbit hole of debugging in VS Code and realized this isn't as straightforward as I thought initially. This short post summarizes the steps I took to make debugging ES6 in VS Code frictionless.

What doesn't work

My first approach was a launch configuration in launch.json mimicking tape -r babel-register ./path/to/testfile.js with babel configured to create inline sourcemaps in my package.json. The debugging started but breakpoints and stepping through the code in VS Code were a complete mess. Apparently, ad-hoc transpilation via babel-require-hook and inline sourcemaps do not work in VS Code. The same result for attaching (instead of launch) to `babel-node

Looking for support tables for HTML/CSS/JavaScript features or details on their implementation status in major browsers?

Chrome Platform Status (covers Chromium and thus includes Opera)
Firefox Platform Status
Microsoft Edge Platform Status
WebKit Feature Status
API Catalog

And then there’s Can I use…?.

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

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	19:42 alexspeller: spenguin: imagine the controller layer as a spiderweb with flies on
	19:42 alexspeller: spenguin: controllers are like the webbing and the struggling flies are your data
	19:43 spenguin: right
	19:43 alexspeller: spenguin: the routing layer is the spider. The spider responds to the weather (i.e. URL changes, user input, websocket events, etc etc) by moving flies around (setting controller content to various data)
	19:45 alexspeller: due to convention a lot of this is automatic (hitting /posts/1 will find Post id 1 and set the model property of the PostController to that post for example) but it doesn't have to be automatic
	19:45 alexspeller: you can override setupController to set the post model to a different controller or you can override model hook so PostRoute finds a different model or multiple models or no model
	19:46 alexspeller: the strands of the web are "needs". They connect controllers together.
	19:48 alexspeller: So don't get confused by thinking there should always be a 1:1 relatio

	angular.module('itemServices', ['ngResource'])
	.factory('Item', ['$resource',
	function ($resource) {
	return $resource('items/:id',
	{id: '@id'},
	{
	query: {
	isArray: true,
	method: 'GET',
	params: {},

	/* Some boys are playing a hockey game and they each play a certain number of shifts. */
	/* For simplicity, we'll say there are 15 different shifts in a game. */

	[
	{
	"player": "Joe",
	"shifts": [
	{ "shift_start": 3, "shift_end": 5 }, // Joe started playing at shift #3, and stopped after shift #5
	{ "shift_start": 7, "shift_end": 11 }
	]

	env = (function() {
	var flags = {}, ua = navigator.userAgent, el = document.createElement('div'), video = document.createElement('video'), audio = document.createElement('audio'), root = document.documentElement, i
	function flag(names) {
	names = names.split(' ')
	for (i = 0; i < names.length; i++)
	flags[names[i]] = true
	}
	function classnames() {
	var names = [], name
	for(name in flags) if (flags.hasOwnProperty(name))

	// Reference: http://stackoverflow.com/questions/4822471/count-number-of-lines-in-a-git-repository

	$ git ls-files \| xargs wc -l

	everything i write on medium is a lie

	xoxo j$