Announcing Official Puppeteer Support for Firefox - Mozilla Hacks - the Web developer blog
https://hacks.mozilla.org/2024/08/puppeteer-support-for-firefox/
We’re pleased to announce that, as of version 23, the Puppeteer browser automation library now has first-class support for Firefox. This means that it’s now easy to write automation and perform end-to-end testing using Puppeteer, and run against both Chrome and Firefox.