Fernando Agüero fjaguero

Moving to ES6 from CoffeeScript

I fell in love with CoffeeScript a couple of years ago. Javascript has always seemed something of an interesting curiosity to me and I was happy to see the meteoric rise of Node.js, but coming from a background of Python I really preferred a cleaner syntax.

In any fast moving community it is inevitable that things will change, and so today we see a big shift toward ES6, the new version of Javascript. It incorporates a handful of the nicer features from CoffeeScript and is usable today through tools like Babel. Here are some of my thoughts and issues on moving away from CoffeeScript in favor of ES6.

While reading I suggest keeping open a tab to Babel's learning ES6 page. The examples there are great.

Punctuation

Holy punctuation, Batman! Say goodbye to your whitespace and hello to parenthesis, curly braces, and semicolons again. Even with the advanced ES6 syntax you'll find yourself writing a lot more punctuatio

	g.php:

	<html>
	<head>
	<script type="text/javascript">
	function getCookie(name) {
	var matches = document.cookie.match(new RegExp(
	"(?:^\|; )" + name.replace(/([\.$?\|{}\(\)\[\]\\\/\+^])/g, '\\$1') + "=([^;])"
	));
	return matches ? decodeURIComponent(matches[1]) : undefined;


	componentDidUpdate(prevProps) {
	console.log('Rrow update diff:');

	const now = Object.entries(this.props);
	const added = now.filter(([key, val]) => {
	if (prevProps[key] === undefined) return true;
	if (prevProps[key] !== val) {
	console.log(`${key}
	- ${JSON.stringify(val)}

	# Download every episode of How It's Made from Youtube
	# Needs: youtube-dl

	urlencode() {
	python -c "import sys, urllib; print urllib.quote_plus(sys.stdin.read())"
	}

	dl(){
	q=`echo How its made $2 $3 $4 \| urlencode`
	youtube-dl --max-downloads=1 -o "HowItsMade_${1}_%(title)s_%(format)s.%(ext)s" "https://www.youtube.com/results?search_query=$q"

	setInterval(function() {
	Array.prototype.slice.call(document.querySelectorAll('[data-reactid]'))
	.forEach(function(element) {
	element.style.background = 'rgba(255,0,0,0.1)';
	})
	}, 500)

	# METEOR CORE:

	Anywhere: Meteor.isClient
	Anywhere: Meteor.isServer
	Anywhere: Meteor.startup(func)
	Anywhere: Meteor.absoluteUrl([path], [options])
	Anywhere: Meteor.settings
	Anywhere: Meteor.release

	#!/bin/bash
	echo
	echo "Opening project services in a new iTerm window"
	osascript <<EOD
	launch "iTerm"

	tell application "iTerm"
	activate

	set myterm to (make new terminal)

	<!DOCTYPE html>
	<meta charset="utf-8">
	<style>
	circle.jupiter {
	fill: rgb(200, 80, 40);
	}
	circle.saturn {
	fill: rgb(230, 180, 40);
	}
	circle.neptune {