Create your first app
In this chapter, let's learn how to create a new Expo project and how to get it running.
We'll need the following tools to get started:
We will use
to initialize a new Expo app. It is a command line tool that allows to create a new React Native project with the
It will create a new project directory and install all the necessary dependencies to get the project up and running locally. Run the following command in your terminal:
# Create a project named StickerSmash
npx create-expo-app StickerSmash
# Navigate to the project directory
This command will create a new directory for the project with the name: StickerSmash.
Let's also download the assets
that we will need throughout this tutorial. After downloading the archive, unzip it and replace the existing assets
directory with it in the project directory. This will override the default assets when the new project is initialized.
Now, let's open the project directory in our favorite code editor or IDE. Throughout this tutorial, we will use VS Code for our examples.
To run the project on the web, we need to install the following dependencies that will help to run the project on the web:
npx expo install react-dom react-native-web @expo/webpack-config
In the project directory, run the following command to start a development server
from the terminal:
Once the development server is running, the easiest way to launch the app is on a physical device with Expo Go. For more information, see Open app on a device
To see the web app in action, press w in the terminal. It will open the web app in the default web browser.
Once it is running on all platforms, the project should look like this:
The text displayed on the app's screen above can be found in the App.js file which is at the root of the project's directory. It is the entry point of the project and is executed when the development server starts.