Firefox for Web Developers

webdevs.firefox.com

13 October 2026 17:00

Firefox 158 landed today! For web devs: 🎉 JPEG XL support, including full progressive rendering. 🎉 'navigate' on notifications, so they can go to a URL without firing events. 🎉 WebGPU's float32-blendable 🎉 WebGL's EXT_polygon_offset_clamp And more! developer.mozilla.org/en-US/docs/M...

Rob Palmer

robpalmer.bsky.social

30 September 2026 08:31

ECMAScript excitement 😉 Congrats to @ashley-c.bsky.social from TechAtBloomberg on advancing the Composites proposal to Stage 2 at @tc39.es today 🎉 Composites are objects that are compared by value instead of identity. They are an evolution of Record & Tuple proposal.

Rob Palmer

robpalmer.bsky.social

29 September 2026 05:34

ECMAScript excitement 😉 Congrats to @michael.ficarra.me on advancing the Iterator Chunking proposal to Stage 4 at @tc39.es today 🎉 It can make iterators that chunk & window content. [0,1,2,3].values().chunks(2); // [0,1], [2,3] [0,1,2,3].values().windows(2); // [0,1], [1,2], [2,3]

Rob Palmer

robpalmer.bsky.social

27 September 2026 17:17

ECMAScript excitement 😉 Sony Interactive Entertainment will host this week's TC39 meeting in Tokyo. Potential advancements: 4⃣ Dynamic Code Brand Checks 4⃣ Iterator Chunking/Includes/Join 3⃣ Thenable Curtailment 2⃣.7⃣ default in export * 2⃣.7⃣ export defer 2⃣.7⃣ JSON.parse opts 🧵

Firefox

firefox.com

23 September 2026 20:42

The web has changed a lot over the last few years, and we've been changing with it. Our new Firefox design ships September 29 with FX 157. If you haven’t tried it out on Nightly yet, here’s what you can expect 🔽 1/4