Jani Hartikainen explains how to deal with promises in unit tests using Mocha and Chai as the base and showing promise-related patterns that occur in tests. (more…)

I didn't much care for vanilla JavaScript prior to ES6. Through all of the 2000s, I chased different approaches to avoid writing too much of it. First there was RJS (Ruby-to-JavaScript). Then there was CoffeeScript. Both transpiling approaches that turned... (more…)

Some time ago, I got inspired to build an app for solving specific kinds of math problems. I discovered I had to parse the expression into… (more…)

I have a weird way of describing software. And you’ll either know what I mean, or you won’t. It’s sort of strange, but software interfaces feel like they have a weight. When I use an interface, it can feel heavy, or it can feel light. Neither is better th... (more…)

Types are bound to improve your JavaScript, if you’re willing to spend some time looking at their advantages.