Joel Griffith


I'm Joel Griffith, a Web Developer. I have over five years of industry experience in web development. I've worked with Nike, FaceBook, TurboTax, Coca-Cola, Wieden+Kennedy and now work at AppNexus.


  1. You should use Rewire

    One of the coolest, almost unheard of libraries, I've ever had the joy of working with is rewire. If you haven't already heard of it, rewire allows you to rewire variables in a JavaScript file to another reference. Wut. Yeah, you heard me, you can do some crazy dependency-injection on…


  2. Top 5 React "Gotchas"

    React is an open source library for "building User-Interfaces", open sourced by Facebook. If you're familiar with the traditional MVC pattern, React would be the "V" layer of that paradigm. I would even go so far to say that if you're not careful, React can also become the "C" layer…

    on React, Jest, Babel, ES6

  3. Announcing Sicksync

    Sicksync is a project born out of the need to "mirror" a file-system quickly. I had issues with rsync and scp as my workflow requires me to VPN to the east-coast, and back to my developer machine in LA. This wasn't super ideal, and for small file changes (where you…


  4. Chaining Sinon Mocks

    I've recently been writing a lot of unit-tests for some open-source projects, and one of those projects chained method calls to the node rsync module. I mocked out this dependency, but had to make sinon 'chainable' in order to properly test the method calls. It was an interesting thing to…

    on sinon, javascript, chain, unit-test, testing, assert, chai, expect

  5. Array.reduce is pretty neat

    You're probably familiar with the standard schlew of Array methods in JavaScript. We're all fond of timeless classics such as forEach, map, and even filter. However, there is one method that has been hiding under the radar (at least for me) for quite a while now. It's one that functional-reactive-programming…