I have compared1 few different tools for unit testing Javascript code. The frameworks I looked intowere QUnit, Mocha JS, tape, AVA, Jasmine, Karma and Jest. ... (more…)

At Facebook, we often need to access deeply nested values in data structures fetched with GraphQL. On the way to accessing these deeply nested values, it is common for one or more intermediate fields to be nullable. These intermediate fields may be null f... (more…)

Learn the concept of inheritance with the prototype chain. (more…)

After reading yet another blog post about JS classes being “just sugar for prototypal inheritance”, I’ve decided to write this post to… (more…)

winamp2-js - A reimplementation of Winamp 2.9 in HTML5 and Javascript... (more…)