Implement declarative mode to implement router?

Q: Implement declarative mode to implement router?

import React from "react"; import ReactDOM from "react-dom/client"; import { BrowserRouter, Routes, Route } from "react-router"; import App from "./app"; const root = document.getElementById("root"); ReactDOM.createRoot(root).render( } /> } /> }> } /> } /> } /> } /> } /> );

Difficulty: 6/10

react-router, declarative routing, navigation state

Routes are configured by rendering <Routes> and <Route> that couple URL segments to UI elements.

javascript

Scenario Questions

0-2 years experience

1How would you set up a basic declarative router in a new React app using React Router v6?
2What happens if you place a <Route> component outside of a <Routes> wrapper?
3If you need to navigate to a different page after a button click, how can you keep the router declarative while still triggering the navigation?

Follow-up Questions

How would you test that your declarative routes behave as expected?
What performance metrics would you monitor after deploying the router?
If a route needs to be pre‑loaded based on a user role, how would you integrate that?