chore: add e2e testing app

apps/e2e/.gitignore

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+# Learn more https://docs.github.com/en/get-started/getting-started-with-git/ignoring-files
+
+# dependencies
+node_modules/
+
+# Expo
+.expo/
+dist/
+web-build/
+expo-env.d.ts
+
+# Native
+*.orig.*
+*.jks
+*.p8
+*.p12
+*.key
+*.mobileprovision
+
+# Metro
+.metro-health-check*
+
+# debug
+npm-debug.*
+yarn-debug.*
+yarn-error.*
+
+# macOS
+.DS_Store
+*.pem
+
+# local env files
+.env*.local
+
+# typescript
+*.tsbuildinfo
+
+# expo prebuild
+/android
+/ios

apps/e2e/README.md

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+# CoMapeo Core React Native Testing App
+
+## Running tests locally
+
+1. Run `npm backend:build` in the project _root_.
+
+2. Run `npm run android` or `npm run ios`
+
+3. Press the `Run tests` button in the app.
+
+## Notes for maintainers
+
+- `jasmine-core` dep must be pinned to v5 because v6 introduces changes that Metro + Hermes cannot handle out of the box.

apps/e2e/app.json

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+{
+	"expo": {
+		"name": "core-react-native-e2e",
+		"slug": "core-react-native-e2e",
+		"version": "1.0.0",
+		"orientation": "portrait",
+		"icon": "./assets/icon.png",
+		"userInterfaceStyle": "light",
+		"splash": {
+			"image": "./assets/splash-icon.png",
+			"resizeMode": "contain",
+			"backgroundColor": "#ffffff"
+		},
+		"ios": {
+			"supportsTablet": true,
+			"bundleIdentifier": "com.comapeo.core.e2e"
+		},
+		"android": {
+			"adaptiveIcon": {
+				"foregroundImage": "./assets/adaptive-icon.png",
+				"backgroundColor": "#ffffff"
+			},
+			"package": "com.comapeo.core.e2e"
+		},
+		"plugins": [["expo-dev-client", { "launchMode": "most-recent" }]]
+	}
+}

apps/e2e/babel.config.js

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+module.exports = function (api) {
+	api.cache(true)
+	return {
+		presets: ['babel-preset-expo'],
+	}
+}

apps/e2e/index.ts

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+import { registerRootComponent } from 'expo'
+
+import App from './src/App'
+
+// registerRootComponent calls AppRegistry.registerComponent('main', () => App);
+// It also ensures that whether you load the app in Expo Go or in a native build,
+// the environment is set up appropriately
+registerRootComponent(App)

apps/e2e/metro.config.js

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+// Learn more https://docs.expo.io/guides/customizing-metro
+const { getDefaultConfig } = require('expo/metro-config')
+const path = require('path')
+
+const config = getDefaultConfig(__dirname)
+
+// npm v7+ will install ../node_modules/react and ../node_modules/react-native because of peerDependencies.
+// To prevent the incompatible react-native between ./node_modules/react-native and ../node_modules/react-native,
+// excludes the one from the parent folder when bundling.
+config.resolver.blockList = [
+	...Array.from(config.resolver.blockList ?? []),
+	new RegExp(path.resolve('..', '..', 'node_modules', 'react')),
+	new RegExp(path.resolve('..', '..', 'node_modules', 'react-native')),
+]
+
+config.resolver.nodeModulesPaths = [
+	path.resolve(__dirname, './node_modules'),
+	path.resolve(__dirname, '..', '..', './node_modules'),
+]
+
+config.resolver.extraNodeModules = {
+	'@comapeo/core-react-native': '../..',
+}
+
+config.watchFolders = [path.resolve(__dirname, '..', '..')]
+
+config.transformer.getTransformOptions = async () => ({
+	transform: {
+		experimentalImportSupport: true,
+		inlineRequires: true,
+	},
+})
+
+module.exports = config