Marc 🦇

youtu.beThe Past, Present & Future of Nitro | Marc Rousavy at React Universe Conf 2025YouTube video by Callstack

22 June 2023

got it, what now?

Marc 🦇 reposted

Rive

@rive.app

25 Nov 2025

🚀 The new React Native runtime is live in development preview! Built on Nitro, thanks to @margelo.com, faster, and ready for you to test. Try it now and give us feedback: github.com/rive-app/riv...

Marc 🦇 reposted

React Universe Summit

@reactuniverse.com

19 Sept 2025

Nitro has become the foundation for some of the most powerful React Native libraries today. At React Universe Conf 2025, @mrousavy.com (@margelo.com) shared Nitro’s journey & what’s next with Nitro Image and VisionCamera. ▶️ youtu.be/25_FWxNh92A

30 June 2025

Hey @grebenyuk.bsky.social - I'm looking for the Image-Frameworks-Benchmark repo you linked in your Nuke landing page to see an up-to-date comparison between SDWebImage and Nuke. Is that repo gone?

23 Feb 2025

Nitro almost has 1k stars... 🤩

20 Feb 2025

another day, another react-native core PR merged

github.comMake Android app start faster by disabling JS bundle compression by mrousavy · Pull Request #7751 · bluesky-social/social-appDisables compression for the .bundle resource files in the .apk. This makes the .apk a bit bigger, but improves startup time on Android - we measured a 400ms startup improvement (12%) in one of our...

17 Feb 2025

Another PR by me to Bluesky merged 🥰

Samuel@samuel.fm

just merged this PR from @mrousavy.com to improve android startup times - in my testing, I saw ~4% speedup, but Marc has seen upwards of 12% in other apps. awesome stuff! github.com/bluesky-soci...

Pavlos Vinieratos (pvinis)

12 Jan 2025

react-native-mmkv is still the fastest storage solution for React Native! 🔥

Pavlos Vinieratos (pvinis)@pav.vin

Seems like MMKV is still king! But also, props to AsyncStorage went from 240ms down to 50ms since React Native 0.68!

Marc 🦇 reposted

@pav.vin

12 Jan 2025

Which storage solution is best for your @expo.dev project? I took @mrousavy.com benchmark repo, moved it to expo, and added expo-sqlite too. Results 👇

26 Dec 2024

use MMKV! 😉🚀

Oussama Bouthouri@bouthouri.bsky.social

The cool #buildinpublic thing of the day. I benchmarked energyxp.app startup time on different devices and switched from async storage to mmkv. 60% faster on my iPhone! @mrousavy.com Kudos, that's some amazing work!

19 Dec 2024

if you know this logo i respect you

github.comRelease Release 0.19.0 · mrousavy/nitro0.19.0 (2024-12-18) ✨ Features Allow std::future to go bi-directional (using new Promise impl) (#411) (283f1f5) Default-calculate getSizeOf(...) so the user doesn't have to (#429) (5b510b8) Implem...

Nitro 19 is out!!! 🥳 github.com/mrousavy/nit...

👉 𝙿𝚛𝚘𝚖𝚒𝚜𝚎<𝚃> is now bi-directional, which allows calling JS callbacks that return a value! ↔️ github.com/mrousavy/nit...

github.comfeat: Implement callbacks that return a value in Swift/Kotlin 🥳 by mrousavy · Pull Request #417 · mrousavy/nitroThis now works: interface SomeHybrid extends HybridObject<{ }> { // Callbacks that return values getValueFromJSCallbackAndWait(getValue: () => number): Promise<number> getValue...

👉 and last but not least; a few other improvements and performance optimizations - as always 🔥

github.comfeat: Implement proper type-erasure inheritance in Swift by mrousavy · Pull Request #427 · mrousavy/nitroConsider the following code: interface Base ... {} interface Child extends Base ... {} interface SomeHybrid extends HybridObject<{ ios: 'swift' }> { createChild(): Base } Previously...

Nitro 19 is out!!! 🥳 github.com/mrousavy/nit...

👉 Swift HybridObjects now hold their inheritance internally, which means type erasure now works perfectly! 👻 github.com/mrousavy/nit...

github.comfeat: Remove `hybridContext` and `memorySize` from Swift HybridObjects (make them optional) by mrousavy · Pull Request #420 · mrousavy/nitroIn Swift Hybrid Objects we previously always required the user to fill in hybridContext and memorySize because Swift protocols don't allow default values, and there's no abstract class in S...

👉 Swift HybridObjects now no longer need the 𝚖𝚎𝚖𝚘𝚛𝚢𝚂𝚒𝚣𝚎 and 𝚑𝚢𝚋𝚛𝚒𝚍𝙲𝚘𝚗𝚝𝚎𝚡𝚝 props!! 🧼 github.com/mrousavy/nit...

Nitro 19 is out!!! 🥳 github.com/mrousavy/nit...

github.comfeat: Implement Swift errors 🥳 by mrousavy · Pull Request #430 · mrousavy/nitroFinally implements errors for synchronous Swift functions. Every Swift function is now wrapped with a Result<T> type that is either T (hasValue()) or std::exception_ptr (hasError()). This add...

👉 Swift functions can now throw errors!! 🥳 github.com/mrousavy/nit...

weekend came early

road to 1k stars 🙈

i hope no one reads my commit messages

Objective-C crash course

fuckingblocksyntax.comHow Do I Declare A Block in Objective-C?

source: fuckingblocksyntax.com

still can't believe how smooth VisionCamera + Skia is - this face blur Skia filter runs in a JS Frame Processor at 120 FPS! 🤯

github.comGitHub - mrousavy/FaceBlurApp: An app that blurs faces in realtime using VisionCamera, Skia and MLKit 😷An app that blurs faces in realtime using VisionCamera, Skia and MLKit 😷 - mrousavy/FaceBlurApp

code is open-source btw: github.com/mrousavy/Fac...