Managing time-based tasks in JavaScript has never been easier with Croner, a powerful tool designed to trigger functions or evaluate cron expressions on various platforms. Whether you're working in Node.js, Deno, Bun, or even directly within a browser, Croner has you covered. In this article, I'll give you a brief introduction on how to use Croner.

So, there I was, diving into Deno's new feature, Deno.cron, when something caught my eye. It was missing a few things – support for time zones, second granularity, and some extended cron-syntax I like. It got me thinking: could I fill these gaps? Despite not having dabbled in Rust before, I had a fair bit of fun creating the croner library for JavaScript and TypeScript, so why not give it a shot in Rust?