Handle Routes with React Router

Since we are building a single page app, we are going to use React Router to handle the routes on the client side for us.

React Router allows us to specify a route like: /login. And specify a React Component that should be loaded when a user goes to that page.

Let’s start by installing React Router.

Installing React Router

Run the following command in the packages/frontend/ directory.

$ npm install react-router-dom

This installs the package and adds the dependency to package.json in your React app.

Setting up React Router

Even though we don’t have any routes set up in our app, we can get the basic structure up and running. Our app currently runs from the App component in src/App.tsx. We are going to be using this component as the container for our entire app. To do that we’ll encapsulate our App component within a Router.

Replace the following in src/main.tsx:

<React.StrictMode>
  <App />
</React.StrictMode>

With this:

<React.StrictMode>
  <Router>
    <App />
  </Router>
</React.StrictMode>

And import this in the header of src/main.tsx.

import { BrowserRouter as Router } from "react-router-dom";

We’ve made two small changes here.

1. Use BrowserRouter as our router. This uses the browser’s History API to create real URLs.
2. Use the Router to render our App component. This will allow us to create the routes we need inside our App component.

Now if you head over to your browser, your app should load just like before. The only difference being that we are using React Router to serve out our pages.

Next we are going to look into how to organize the different pages of our app.