⚛️ romulus-cli ·

romulus is a tool designed to provide structure and a set of patterns for React Native applications.

It should help eliminate the time you spend bootstrapping each project and give you consistency between your application builds.

While this comes with some opinion, there’s no overarching framework on top of React Native; it’s purely a collection of commonly used modules and some sensible architecture to get you or your team off the ground.

What does it do?

• Features - adds a set of commonly required features (e.g. Redux setup, offline storage, environment variables and more) by taking advantage of great community driven packages
• Structure - provides a sensible structure for your applications that helps bring consistency within your team or just between your own applications
• Scaffolding - makes it easy to scaffold new components, reducers and scenes that follow the same style and structure

Example application

View the example application created with Romulus to get an idea of what romulus init does. The application is ready to be cloned down and ran straight away onto a device or simulator.

Installation

npm install -g romulus-cli

yarn global add romulus-cli

Don’t want to install anything? You can run the commands directly using npx (available with npm@5.2.0).

npx romulus-cli init

Getting started

Create a new React Native project using their CLI tool.

npx react-native init MyApp --template react-native-template-typescript
cd MyApp

You need to ensure you have the correct cli installed for this command to succeed.

npm uninstall -g react-native-cli
npm i -g @react-native-community/cli

Once this is complete, simply run the main generator command. This will rework and add to the files that are generated by React Native and give you something more akin to what you might find with rails new.

romulus init

Features

• A sensible README providing consistent instructions between projects
• TypeScript support
• Router using react-navigation (v5)
• Redux setup (optional)
  • Store is persisted using redux-persist
  • Helpful state changes logged in the debugger using redux-logger
  • Actions are prevented from being dispatched before the cache is restored
• react-query setup (optional)
  • Makes it easy to get setup with react-query
  • Replaces Saga and Redux architecture
• UI niceities
  • CSS-in-JS support for styled-components
  • Start to a styleguide to list your components
  • Example Button component
  • Layout component example to DRY up screen layouts
  • Pattern to organise components and their styles
• Helpful utilities
  • log helper to output coloured logs to the debug console
  • Visual display of your app’s environment while it’s running, this gets hidden in production
• Optional support for different locales using react-native-i18n
• Environment variables available in JavaScript, Objective C and Java using react-native-config
• Sagas (to handle async tasks like HTTP requests) using redux-saga (optional, not available with react-query)
• Initial setup for deep linking
• Requests are set up to be handled with axios with clear logging in the debugger provided
• Automatic versioning of iOS and Android versions based on the package.json version
• Generic app icon that can be processed through a separate generator to handle all your iOS and Android icons

Structure

After running the base command, on top of the features above your application will then receive this structure.

App/
├── @types/
│   └── index.d.ts
├── Actions/
│   ├── App.ts
│   └── index.ts
├── Assets/
│   └── AppIcon.png
├── Components/
│   ├── App/
│   │   └── index.tsx
│   ├── Button/
│   │   ├── index.tsx
│   │   └── styles.ts
│   ├── Layout/
│   │   ├── index.tsx
│   │   └── styles.ts
│   ├── Text/
│   │   ├── index.tsx
│   │   └── styles.ts
│   ├── Utilities/
│   │   └── Environment/
│   │       ├── index.tsx
│   │       └── styles.ts
│   └── Router.tsx
├── Config/
│   ├── Locales/
│   │   └── en.json
│   └── index.ts
├── Helpers/
│   ├── Translations.ts
│   └── Log.ts
├── Reducers/
│   ├── App.ts
│   └── index.ts
├── Sagas/
│   ├── index.ts
│   └── RequestExample.ts
├── Screens/
│   ├── index.ts
│   ├── Main.tsx
│   └── Styleguide.tsx
├── Services/
│   └── API/
│       ├── index.ts
│       └── logging.ts
├── Store/
│   ├── Middleware/
│   │   ├── Buffer.ts
│   │   ├── index.ts
│   │   ├── Logger.ts
│   │   └── Saga.ts
│   └── index.ts
├── Theme/
│   └── index.js
├── index.tsx
└── Theme.ts

Documentation

• Scaffolding

Manual Notes

After romulus init

Follow the Android version of these instructions to add automatic build numbers.

https://medium.com/@andr3wjack/versioning-react-native-apps-407469707661#.quhgn05gf

Resources

• Introduction to Sagas
• A great simple intro to Redux Sagas
• Intro to Redux
• TypeScript