- Make sure to copy the `.env.example` to `.env` and fill in any necessary tokens. (The Sentry token is NOT required; see instructions below if you want to enable Sentry.)
- If you want to use Expo EAS on your own builds without ejecting from Expo, make sure to change the `owner` as well as `extra.eas.projectId` properties. If you do not have an Expo account, you may remove these properties.
- For some reason, the typescript compiler chokes on platform-specific files (e.g. `foo.native.ts`) but only when compiling for Web thus far. Therefore we always have one version of the file which doesn't use a platform specifier, and that should be the Web version. ([More info](https://stackoverflow.com/questions/44001050/platform-specific-import-component-in-react-native-with-typescript).)
Adding Sentry is NOT required. You can keep `SENTRY_AUTH_TOKEN=` in `.env` which will build the app without Sentry.
However, if you're a part of the Bluesky team and want to enable Sentry, fill in `SENTRY_AUTH_TOKEN` in your `.env`. It can be created on the Sentry dashboard using [these instructions](https://docs.expo.dev/guides/using-sentry/#sign-up-for-a-sentry-account-and-create-a-project).
If you change `SENTRY_AUTH_TOKEN`, you need to do `yarn prebuild` before running `yarn ios` or `yarn android` again.
On build success, access the application at [http://localhost:8100/](http://localhost:8100/). Subsequent changes require re-running the above steps in order to be reflected.
## Various notes
### Debugging
- Note that since 0.70, debugging using the old debugger (which shows up using CMD+D) doesn't work anymore. Follow the instructions below to debug the code: https://reactnative.dev/docs/next/hermes#debugging-js-on-hermes-using-google-chromes-devtools
### Developer Menu
To open the [Developer Menu](https://docs.expo.dev/debugging/tools/#developer-menu) on an `expo-dev-client` app you can do the following:
- Android Device: Shake the device vertically, or if your device is connected via USB, run adb shell input keyevent 82 in your terminal
- Android Emulator: Either press Cmd ⌘ + m or Ctrl + m or run adb shell input keyevent 82 in your terminal
- iOS Device: Shake the device, or touch 3 fingers to the screen
- iOS Simulator: Press Ctrl + Cmd ⌘ + z on a Mac in the emulator to simulate the shake gesture, or press Cmd ⌘ + d
### Running E2E Tests
- Make sure you've setup your environment following above
- Make sure Metro and the dev server are running
- Run `yarn e2e`
- Find the artifacts in the `artifact` folder
### Polyfills
`./platform/polyfills.*.ts` adds polyfills to the environment. Currently this includes:
- TextEncoder / TextDecoder
### Sentry sourcemaps
Sourcemaps should automatically be updated when a signed build is created using `eas build` and published using `eas submit` due to the postPublish hook setup in `app.json`. However, if an update is created and published OTA using `eas update`, we need to the take the following steps to upload sourcemaps to Sentry:
- Run eas update. This will generate a dist folder in your project root, which contains your JavaScript bundles and source maps. This command will also output the 'Android update ID' and 'iOS update ID' that we'll need in the next step.
- Copy or rename the bundle names in the `dist/bundles` folder to match `index.android.bundle` (Android) or `main.jsbundle` (iOS).
- Next, you can use the Sentry CLI to upload your bundles and source maps:
- release name should be set to `${bundleIdentifier}@${version}+${buildNumber}` (iOS) or `${androidPackage}@${version}+${versionCode}` (Android), so for example `com.domain.myapp@1.0.0+1`.
-`dist` should be set to the Update ID that `eas update` generated.
To create OTA updates, run `eas update` along with the `--branch` flag to indicate which branch you want to push the update to, and the `--message` flag to indicate a message for yourself and your team that shows up on https://expo.dev. ALl the channels (which make up the options for the `--branch` flag) are given in `eas.json`. [See more here](https://docs.expo.dev/eas-update/getting-started/)
The clients which can receive an OTA update is governed by the `runtimeVersion` property in `app.json`. Right now, it is set so that only apps with the same `appVersion` (same as `version` property in `app.json`) can receive the update and install it. However, we can manually set `"runtimeVersion": "1.34.0"` or anything along those lines as well. This is useful if very little native code changes from update-to-update. If we are manually setting `runtimeVersion`, we should increment the version each time native code is changed. [See more here](https://docs.expo.dev/eas-update/runtime-versions/)
