While coding an Astro application, I wondered how I could check whether the code was running on the Browser.
Astro runs Vite under the hood, and on Vite land, we have an easy way of doing that:
const isBrowser = import.meta.env.SSR === false
// browser code
This is handy because even when building a static site, Vite will pre-process code on the server side, meaning that if we check window or document, it will throw an error.