A command line tool for developing React Native apps

Haul is a drop-in replacement for react-native CLI built on open tools like Webpack. It can act as a development server or bundle your React Native app for production.

Features

Replaces React Native packager to bundle your app
Access to full webpack ecosystem, using additonal loaders and plugins is simple
Doesn't need watchman, symlinks work nicely
Helpful and easy to understand error messages
Hot Module Reloading

Getting started

Start by adding Haul as a dependency to your React Native project (use react-native init MyProject to create one if you don't have a project):

yarn add --dev haul

If you're on a React Native version >= 0.43, add the following in android/app/build.gradle somewhere before the apply from: "../../node_modules/react-native/react.gradle" statement:

project.ext.react = [
    cliPath: "node_modules/haul/bin/cli.js"
]

To configure your project to use haul, run the following:

yarn haul init

This will automatically add the configuration needed to make Haul work with your app, e.g. add webpack.haul.js to your project, which you can customise to add more functionality.

Next, you're ready to start the development server:

yarn haul start -- --platform ios

Finally, reload your app to update the bundle or run your app just like you normally would:

react-native run-ios

Documentation

Check out the docs to learn more about available commands and tips on customizing the webpack configuration.

Hot Module Replacement

Please refer to the Setup guide.

Limitations

Haul uses a completely different architecture from React Native packager, which means there are some things which don't work quite the same.

We are actively working on adding support for the following:

Existing react-native commands

The following features are unlikely to be supported in the future:

Haste module system: use something like babel-plugin-module-resolver instead
Transpile files under node_modules: transpile your modules before publishing, or configure webpack not to ignore them

Contributors

Thanks goes to these wonderful people (emoji key):

_{Mike Grabowski} 💬 💻 🎨 📖 💡 🤔 👀	_{Satyajit Sahoo} 💬 💻 🎨 🤔 👀	_{Paweł Trysła} 💬 🐛 💻 📖 💡 🤔	_{Krzysztof Borowy} 💬 🐛 💻 🤔	_{Michał Pierzchała} 💻 🤔 ⚠️	_{Steve Kellock} 💻	_{Mathieu Dutour} 💻
_Orta 📖	_{Yann Pringault} 💻 📖	_{Drapich Piotr} 💻 📖	_{Júlio César} 🐛 💻	_{LiJung Chi} 💻	_spypsy 💻	_{Juwan Wheatley} 📖
_{Jeremi Stadler} 📖	_{David Sheldrick} 💻	_{Miguel Oller} 🐛 💻	_{Krzysztof Karol} 💻	_{Jakub Stasiak} 💻	_{Ferran Negre} 🐛 💻	_CL123123 📖
_{Marty Penner} 📖	_{Jim Cummins} 📖	_{Gant Laborde} 📖	_{Paweł Burniak} 📖	_bsnelder 💻	_aivæn 💻	_{Nemanja Stojanovic} 💻
_{bogdanbolchis} 📖	_{Joe Arasin} 🐛 💻	_{Norbert de Langen} 📖	_{Gustav Wengel} 📖	_{Eric Wooley} 🐛 💻	_{Matt Cubitt} 🐛 💻	_{Jakub Beneš} 💻