Inspect your Metro bundle, on module level.
Warning
This project is unstable and might not work for your project.
Atlas is built into Expo starting from SDK 51, and enabled when defining the environment variable EXPO_UNSTABLE_ATLAS=true.
You can use Atlas with two Expo commands:
$ expo start→ Start a local dev server, Atlas will listen to any change within your project.$ expo export→ Export your app to Android, iOS, or web. Atlas will generate theatlas.jsonlfile.
When enabling Atlas with the local dev server, you can access Atlas on http://localhost:8081/_expo/atlas. This shows you all information from the bundle loaded during development.
$ EXPO_UNSTABLE_ATLAS=true npx expo startTip
Expo start runs in development mode by default. If you want to see a production bundle of your app, you can start the local dev server in production mode: $ expo start --no-dev --no-minify.
When enabling Atlas during exports, Expo generates the .expo/atlas.json file in your project. This file contains all bundle information, including the actual source code of individual files. You can open the Atlas file through npx expo-atlas [path/to/atlas.jsonl].
# Export the app for all platforms
$ EXPO_UNSTABLE_ATLAS=true npx expo export --platform all
# Open Atlas using the default `.expo/atlas.jsonl` path
$ npx expo-atlas
# Open Atlas from a shared file
$ npx expo-atlas ./path/to/atlas.jsonlwith ❤️ Expo