The youtube from foobarsik

Install

asdf install
yarn
bundle install
cd ios && bundle exec pod install

Duplicate .env.example and save it as .env.alpha and fill values there.

Create release.keystore for android and put in in android/app folder

keytool -genkey -v -keystore my-upload-key.keystore -alias my-key-alias -keyalg RSA -keysize 2048 -validity 10000

Modern Javascript (like hooks, functional component, etc)
Typescript support, check this cheatsheet and typescript pros and cons to learn more about it
State is managed using global Mobx stores. This awesome collection may help you to learn it
Css-in-Js approach
Feature based structure
Fasline - the easiest way to automate beta deployments and releases for your iOS and Android apps. It handles all tedious tasks like generating screenshots, dealing with code signing and releasing your application.

React Native
Mobx to help manage state
React Navigation to handle routing and navigation in the app
Apisauce to make API calls (Axios + standardized errors + request/response transforms)
Emotion - a flexible CSS-in-JS library
react-i18next which can help you localize your apps with ease
prettier and eslint preconfigured for React Native
Bugsnag - an error-monitoring tool that allows your developers to identify, prioritize and replicate bugs in a time-efficient and enjoyable manner
React-native-bootsplash for adding splash screen to an app
Jest for testing
Husky allows us to easily wrangle Git hooks and run the scripts we want at those stages. You can use it to lint your commit messages, run tests, lint code, etc when you commit or push

src/assets: assets (image, audio files, ...) used by the application
src/i18n: localization strings and utils, you can add languages files and be able to translate your app strings
src/modules: components folder
src/services: application services, e.g. API clients
src/theme: base styles for the application
src/types: contains types for Typescript support