If you’re using TypeScript with Express, you may well hit on TS2339: Property ‘whatever’ does not exist on type ‘RequestQuery’. It’s actually pretty easy to solve. Perhaps more frustrating than anything, as you may well have lots of examples of this problem, especially if migrating an older project from JavaScript, or less restrictive TypeScript, to … Read more
Jest is an amazing testing tool, but sometimes it throws up situations that confuse the hell out of me. Even worse is when I get confused by a problem / error message that I am 100% sure I have seen before, and solved, but it was on a different project and I can’t remember how … Read more
I got really lucky with the fix for this one, as it had me scratching my head for a good while. The gist of this is that I had two classes – a base class, and a sub class. I wanted to call a method with the same name on the sub class as exists … Read more
You may well have come across the warning in React where you are rendering out a list of things, and you forget to give each element a unique key. If you do that, you get the following showing your browser’s console: Warning: Each child in a list should have a unique “key” prop. In this … Read more
