Robert Pasiński

Imagine if you could use any native library in both React Native & React Web in an instant, with great performance and even better DX 🚀 Soon, you won't need to imagine anymore, here at @callstackio we're cooking something big 👀 Coming soon™🤞

@tmikov Forgot to add link if you are interested 👀 github.com/callstackincub…

That’s an interesting question, except the sandbox, which is perfect for embedding, it’s widely supported. Is this faster? Certainly not, you can reduce the overhead with JIT, and even with transpiration to C. But if you skip the VM aspect, you can use it for its unified ABI (and WIT for the codegen in the future). In polygen, for example, we focus on its cross-language simplicity, because I believe it matches the React Native approach of write once use everywhere. You also get turbomodule like thingy that is also running on the Web 😁

What is the point of Wasm in React Native, if you can just use the original native code that was compiled to Wasm to begin with? Wasm is slower than native. I have seen differences close to an order of magnitude even in the major engines. Is the sandboxing appealing?

Join us on our meetup next week! Lots of cool talks really. I’ll have a talk about polyglot turbo modules if you are interested 👀

Just arrived to NYC to build the next big thing! 🇺🇸

Time to start the #wasmio2025 🔥

We are in Barcelona with @rob_pasinski and @mani3xis for #wasmio25 conference 🚀 Looking forward to Robert’s and Kræn’s talk tomorrow! 🎤

Our latest and greatest all-in-one performance guide now rewritten from scratch! Check it out! 👀

@o_kwasniewski @kudochien @cortinico @CipolleschiR I didn’t have a chance to do anything 😅 all kudos should go to You and Kudo, you did all the hard work 🚀

Thanks to everyone who worked on this: @kudochien, @cortinico, @CipolleschiR, and @rob_pasinski 🚀

Over the past few weeks, I've been working on extracting the JavaScriptCore JS Engine from React Native Core 👀 It's now leaving in the React Native Community repository! 🎉 You will be able to use it from RN 0.79+ ⭐ github.com/react-native-c…

Re.Pack 5 is here! ⚡️ 5x faster with Rspack 🤝 Module Federation 2 support 🪶 Up to 90% smaller configs 🛠️ Reanimated, Expo Modules, & NativeWind plugins 📖 Check out the full announcement blog post below 👇

@BubbleTroubl_rg Whoops, it as a typo, it's fixed now 😅 Thanks for the heads up!

@rob_pasinski When trying using the manual way, it seems the packages polgon/config, polygon/cli, and polygon/metro-config still haven't been publsihed to npm ? Guess I should still wait a little, as the init one wasn't working for me.

Polygen just got some basic docs, more on the way 👀 callstackincubator.github.io/polygen/

@mrousavy Oh, just grasped some context. I missed the hard point on zero copy, sorry, carry on 🤣

@mrousavy It assumes ownership IIRC, maybe std::span would be better in that case, which is closest to slices from other languages, but it depends on the use case 😄

tried to build a faster zero-copy C++ string implementation, ended up being slower than std::string. How was your day?

@mrousavy But yeah, doing optimistic zero copy in cpp would prob require some RefCounting I think (so that constant literals are borrowed instead of copied), deep rabbit hole tho 🥲

@mrousavy it’s marked as drop in std::string replacement, so should not be a problem regarding the former (except that storage strategy varies and small strings are stored inline I think), as for the latter I don’t think so, there’s folly/Unicode which Copilot says does it but I doubt 🤷‍♂️

@rob_pasinski Does it support zero-copy access of a char*? And UTF16 -> UTF8 conversion?

@o_kwasniewski Great books! 🥹 Learning to write even a simple interpreter or compiler teaches you so much, you will never code or look at the code the same way ever again tho

Time to learn something new 👨‍🎓

JavaScript lifting too much weight in your React Native app? Let WebAssembly do the heavy work! Polygen compiles WebAssembly modules to native Turbo Modules — no interpreter, no JIT, just speed. More at hubs.li/Q035LQK00 by @rob_pasinski React Native + WebAssembly = 🚀

Friday is the release day! New version of Polygen (v0.2.0) with lots of big fixes and updates just landed! (and we think you'll love it!) github.com/callstackincub…