react-native-quickjs

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react-native-quickjsRun React Native on QuickJS.

A drop-in JavaScript engine for React Native 0.85 and newer. One command and your app runs on QuickJS instead of Hermes.

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Fast

A small, fast interpreter that starts quickly and stays light while it runs.

Small

About 1 MB of compiled engine in your app.

Debugging support

Chrome DevTools over React Native's own debugger — breakpoints, stepping, call stacks, variable inspection and console.

Built from source

The engine compiles with your app, from the C sources in the package. Nothing prebuilt is downloaded.

React Native runs your JavaScript on Hermes. This replaces it with QuickJS — a small engine that aims at the current ECMAScript specification — and gives React Native the runtime and factory it needs to use it.

sh
npm install @react-native-quickjs/quickjs@alpha
npx react-native-quickjs install

It is alpha, published under the alpha tag — hence the @alpha above. On iOS, removing Hermes means React Native core is compiled from source, which makes the first build slower.

Install · Known limitations