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15.4.5 • Public • Published


Provides system information that remains constant throughout the lifetime of your app.

API documentation

Installation in managed Expo projects

For managed Expo projects, please follow the installation instructions in the API documentation for the latest stable release.

Installation in bare React Native projects

For bare React Native projects, you must ensure that you have installed and configured the expo package before continuing.

Add the package to your npm dependencies

npx expo install expo-constants

Monorepo Support

In a monorepo, the expo-constants package might be in a different folder than the native scripts are expecting. You can easily symlink the node module to your app's local node_modules folder by doing the following:

  • Follow the setup instructions for expo-yarn-workspaces.
  • Add the following configuration to your app's package.json:
  "expo-yarn-workspaces": {
    "symlinks": ["expo-constants"]
  • Finally, run yarn in the app folder to create symlinks to expo-constants in your app's local node_modules folder.


Contributions are very welcome! Please refer to guidelines described in the contributing guide.

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npm i expo-constants

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