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Posts by Jay Meistrich

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I've got LegendList's scrollToIndex and sticky headers features working in react-dom now (though not fully optimized yet) - try it out in @legendapp/list@2.1.0-beta.2 🎉

If you've used another web virtualized list library before, what are your pain points?

5 months ago 7 0 2 0
Legend List: Optimizing for Mobile & Web | Jay Meistrich at React Universe Conf 2025
Legend List: Optimizing for Mobile & Web | Jay Meistrich at React Universe Conf 2025 YouTube video by Callstack

Fastest list in React Native & React DOM? Legend List v2. @jayz.us (Legend / Bravely) reveals the optimizations behind it: signals, minimized renders, and platform-specific tricks for web & mobile.
▶️ youtu.be/Ui3qVl80Pzg

6 months ago 4 1 0 0

Not yet. Focusing on perfecting the core first.

7 months ago 1 0 0 0

Wow this is a huge improvement from upgrading to LegendList v2! I didn't even know it's THAT much better 😅

I've been using @habitpixel.com for a while and it will be great to get a perf boost in it 🎉. So cool to be able to make the apps I use even better 🫡

7 months ago 4 1 0 0
Video

Legend List 2.0 is LIVE!

The ⚡️ fastest React Native list library, in 100% JS, now with more accuracy and speed!

✨Perfectly accurate scrollToIndex
✨Even faster
✨Zero mount time on new arch
✨Sticky headers
✨estimatedItemSize is optional
✨New and old arch

www.legendapp.com/open-source/...

7 months ago 27 2 3 0

Very ready 🎉

7 months ago 1 0 1 0
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Getting Legend List for web ready for my @reactuniverseconf.com talk in beautiful Wroclaw 😍

7 months ago 20 2 1 0
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Video

I got maintainVisibleContentPosition working in LegendList on web 🎉

So it looks like we can support initialScrollIndex with no jank scrolling up, and bidirectional infinite lists should work too!

The solution seems to be scrollBy(), which does not break momentum scrolling 👍

7 months ago 6 0 0 0

I'm actually working on making a perfect chat UI right now. The answer to the list is Legend List of course 😅. But there's a lot more on top to get everything perfect. We'll hopefully have something to show soon! @samuel.bsky.team Ping me when you're ready and I'll try to help 👍

7 months ago 4 0 1 0
Version 2 Version 2

It's already used in production in a few apps so it should be ready to use even in beta. Please give it a try and report any issues you see ❤️

Full release notes: legendapp.com/open-source/...

7 months ago 1 0 0 0
Video

Legend List 2.0 is now in beta!
✨ Improved performance
✨ Perfectly accurate scrollToIndex
✨ Mount time on new arch goes from pretty fast to ZERO
✨ Sticky headers
✨ estimatedItemSize is now optional
✨ Fixes many bugs

7 months ago 48 4 1 0

Works on both old and new arch 😀

7 months ago 1 0 1 0
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2 Fast 2 LegendList. Beta 2morrow.

7 months ago 15 1 1 0
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Legend List for React DOM coming soon, launching September 4 at @reactuniverseconf.com. The goal is to be faster than every other list library on both mobile and web.

8 months ago 14 1 0 0
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Legend List is feeling a bit sticky

8 months ago 19 2 0 0
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🔹 Meet the Speakers 🔹

Jay Meistrich is the founder of Legend and CTO of Bravely. He builds Legend State, Legend List, and Legend Photos to make React and React Native apps faster and easier.

Welcome on board, @jayz.us 🔥

🎟️ Book your spot: hubs.li/Q03vq7PX0

9 months ago 2 1 0 0

Where did everyone end up? I'm gonna head to central soon.

9 months ago 4 0 1 0
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I'm free from around 4. Also in Sloterdijk.

9 months ago 3 0 1 0

Long but good. Great meeting you as well! Hope the second day was awesome, sad I had to miss it...

10 months ago 1 0 1 0

What are you often searching for?

10 months ago 1 0 0 0

That's a good question! I hadn't gotten there yet. But I should probably experiment and figure out that pretty soon... I'll post back when I figure out the best option. Do you have any favorites?

10 months ago 2 0 1 0

Very interesting ideas I hadn't thought of!
- how do you define a group? Would it be by filtering for certain labels?
- showing latest comments could be very useful!

Mind if I ping you in a few weeks to talk more ideas? Busy with Local First conf and App.js for the next couple weeks 😃

10 months ago 4 0 1 0

What are the main things you're looking for?

10 months ago 3 0 1 0

Oh this is all great to know! Thank you ❤️. I might ping you again in a few weeks for more thoughts if you don't mind :)

10 months ago 2 0 1 0
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Not yet, still a prototype. I'm experimenting with UI and haven't hooked up the write APIs yet. I'm going to try to release something with a month or so. Busy for the next two weeks with Local First conf and App.js :)

10 months ago 1 0 0 0

Use WASM for which part?

10 months ago 1 0 1 0

I don't. I should! I'll post about that soon and see if I can build up a list.

10 months ago 2 0 0 0

That's my aim! Do you have any big frustrations with using GH itself?

10 months ago 2 0 2 0

It's still a prototype but it's looking promising! I've gotten frustrated managing Legend List and Legend State issues so this is primarily scratching my own itch. But I think it could be useful for a lot of people :). Would you use something like this?

10 months ago 11 0 3 0
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I'm trying to make the fastest Mac app you've ever seen. So of course I'm building it in javascript with React Native.

It'll be an app for managing Github issues, PRs, discussions.

🔌 Local first
🛜 Works offline
⚡️ Instant interactions
💾 App is 50mb, 100mb ram
👐 Open source

10 months ago 70 7 6 0