Launched Reps

Built Reps — a daily JavaScript puzzle for your coding muscles. Think Wordle, but you write a small JavaScript function and it runs against three tests right in your browser.

There are 40 puzzles covering algorithms and data transformations, with difficulty labels, an animated test runner and stat tracking. It uses the Monaco editor, runs your code in a Web Worker with timeout protection (so an infinite loop won’t take the tab down with it), keeps progress in localStorage, and has Wordle-style spoiler-free sharing. Built with Vite and ZUI, deployed to Cloudflare Workers.