Expo

Try Expo in the Browser | Read the Documentation 📚

• 📚 Documentation
• 🗺 Project Layout
• 🏅 Badges
• 👏 Contributing
• ❓ FAQ
• 💙 The Team
• License

Expo is an open-source platform for making universal native apps that run on Android, iOS, and the web. It includes a universal runtime and libraries that let you build native apps by writing React and JavaScript. This repository is where the Expo client software is developed, and includes the client apps, modules, apps, CLI, and more. Expo Application Services (EAS) is a platform of hosted services that are deeply integrated with Expo open source tools. EAS helps you build, ship, and iterate on your app as an individual or a team.

Click here to view the Expo Community Guidelines. Thank you for helping keep the Expo community open and welcoming!

📚 Documentation

Learn about building and deploying universal apps in our official docs!

• Getting Started
• API Reference
• Using Custom Native Modules

🗺 Project Layout

• packages All the source code for Expo modules, if you want to edit a library or just see how it works this is where you'll find it.
• apps This is where you can find Expo projects which are linked to the development modules. You'll do most of your testing in here.
• docs The source code for https://docs.expo.dev
• templates The template projects you get when you run npx create-expo-app
• react-native-lab This is our fork of react-native used to build Expo Go.
• guides In-depth tutorials for advanced topics like contributing to the client.
• android contains the Android project.
• home contains the JavaScript source code of the app.
• ios contains the iOS project.
• ios/Exponent.xcworkspace is the Xcode workspace. Always open this instead of Exponent.xcodeproj because the workspace also loads the CocoaPods dependencies.
• tools contains build and configuration tools.
• template-files contains templates for files that require private keys. They are populated using the keys in template-files/keys.json.
• template-files/ios/dependencies.json specifies the CocoaPods dependencies of the app.

🏅 Badges

Let everyone know your app can be run instantly in the Expo Go app!

[![runs with Expo Go](https://img.shields.io/badge/Runs%20with%20Expo%20Go-000.svg?style=flat-square&logo=EXPO&labelColor=f3f3f3&logoColor=000)](https://expo.dev/client)

[![runs with Expo Go](https://img.shields.io/badge/Runs%20with%20Expo%20Go-4630EB.svg?style=flat-square&logo=EXPO&labelColor=f3f3f3&logoColor=000)](https://expo.dev/client)

👏 Contributing

If you like Expo and want to help make it better then check out our contributing guide! Check out the CLI package to work on the Expo CLI.

❓ FAQ

If you have questions about Expo and want answers, then check out our Frequently Asked Questions!

If you still have questions you can ask them on our forums, Discord or on Twitter @Expo.

💙 The Team

Curious about who makes Expo? Here are our team members!

License

The Expo source code is made available under the MIT license. Some of the dependencies are licensed differently, with the BSD license, for example.

Changelog

Unpublished

🛠 Breaking changes

🎉 New features

🐛 Bug fixes

💡 Others

2.1.1 — 2022-10-25

This version does not introduce any user-facing changes.

2.1.0 — 2022-07-07

💡 Others

• Fix typo in deprecation warning. (#17513 by @frankcalise)

2.0.0 — 2022-04-18

🛠 Breaking changes

• Deprecate the library in favor of expo-splash-screen. (#16963 by @brentvatne)

1.3.0 — 2021-12-03

This version does not introduce any user-facing changes.

1.1.4 — 2021-10-01

🐛 Bug fixes

• Fix unintended export change of the AppLoading component. (#14589 by @Simek)

1.1.3 — 2021-09-28

💡 Others

• Export AppLoading component props type as AppLoadingProps. (#13396 by @Simek)

1.1.0 — 2021-06-16

This version does not introduce any user-facing changes.

1.0.3 — 2021-04-13

This version does not introduce any user-facing changes.

1.0.2 — 2021-03-10

This version does not introduce any user-facing changes.

1.0.1 — 2020-12-10

🐛 Bug fixes

• No longer swallows error messages of errors that occur in startLoadingAppResourcesAsync. (#11312 by @cruzach)

1.0.0 — 2020-11-17

🎉 New features

• Remove undocumented getAppLoadingLifecycleEmitter method. (#11053 by @bbarthec)
• Extract AppLoading to separate expo-app-loading package. (#10929 by @bbarthec)