Expo has emerged as a powerhouse in the realm of cross-platform mobile development, offering a streamlined approach to building applications for iOS, Android, and the web using JavaScript and React. If you're looking to kickstart your mobile development journey without the complexities of native build tools, Expo is your ideal starting point. This guide will walk you through setting up your first Expo project, from installing the necessary tools to running your app across different platforms.
Prerequisites#
Before we begin, ensure you have Node.js and npm (Node Package Manager) or Yarn installed on your system. These are essential for managing JavaScript packages and running development servers. You can download Node.js from its official website, which includes npm. If you prefer Yarn, you can install it globally via npm.
- Node.js & npm: https://nodejs.org/
- Yarn (optional):
npm install -g yarn
Installing Expo CLI#
Expo CLI is the command-line interface tool that allows you to initialize, develop, and publish your Expo projects. It simplifies many common development tasks. To install it globally on your machine, open your terminal or command prompt and run one of the following commands: