Reason comes with a formatter that takes your badly written code and turns it into a well-indented piece of art: Think of it as Prettier or Gofmt but for Reason. Arguments about how to format code (and syntax in general) have plagued us since the dawn of programming; I’m…

Quick post that documents the various quirks of `propTypes`. The React `propTypes` semantics differ from the ones from Flow and can cause subtle bugs. Here’s a handy cheat sheet. PropTypes propTypes: { // field required, must be number and NOT `null` NOR `undefined` foo: PropTypes.number.isRequired } propTypes: { // field…

Disclaimer: this post is dedicated to the typical software developer who, in this day and age, has a bit of wiggle room in terms of making tradeoffs between performance and API benefits. Immutable-js and ClojureScript (A lisp that compiles JavaScript) hash maps are backed by fast JS arrays when the…

(By the way, we’re on Discord!) I get very happy each time someone pings me on Twitter to show a crazy new React-Motion demo. As a library maintainer, that’s really what I hoped for! Furthermore, talking to the community and sitting in the Slack channel informed me about people’s pain…