In our applications it is often useful to be able to represent the possible absence of a value. In JavaScript we have undefined to represent the result of trying to access something that was never defined to begin with, and we havenull to assign to values that might have a…


Heads up: this post is way old, I’m just cross-posting it. It was originally written in March 2016 which is basically the Roman Empire on frontend programming timelines. Also I was not good at writing then. I’m still not, but I wasn’t then either.

What do we do when configuration…

Luke Westby

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store