Ricky Souza rrickay

The introduction to Reactive Programming you've been missing

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.

duplicates = multiple editions

	/*
	* Refactor f to use Promises instead of callbacks
	*/
	const f = (firstName, callback) => {
	setTimeout(() => {
	if (!firstName) return callback(new Error('firstName is required'))
	const fullName = `${firstName} Smith`
	return callback(fullName)
	}, 2000)
	}

	const { spawn } = require('child_process')
	const chalk = require('chalk')
	const { MultiSelect } = require('enquirer')
	const { lstatSync, readdirSync } = require('fs')
	const { join } = require('path')

	const getDirectories = source =>
	readdirSync(source).map(name =>
	join(source, name)).filter(source => lstatSync(source).isDirectory())