Defer and Await React Router Data API | React Routers Tutorials #reactrouterv6 #reactrouter #react

*Summary*
This tutorial explains how to use `defer` and `await` with React Router's data loading API (useLoaderData) to improve user experience. The core issue addressed is the blocking nature of standard `await` calls within loaders, which prevents UI interaction while data fetches are in progress. The solution involves using `defer` to return a promise from the loader, allowing asynchronous data fetching without blocking the UI. The tutorial demonstrates this with examples, showing how to handle loading states using React's `Suspense` component and comparing the standard loader approach with the `defer`/`await` approach.

*Highlights*

- ⏱️ *Problem:* Standard `await` in `useLoaderData` blocks UI interaction until data fetching completes, leading to a poor user experience.
- 💡 *Solution:* Using `defer` allows asynchronous data fetching, returning a promise from the loader. `await` is then used with `useLoaderData` to eventually resolve the promise and display the data.
- 🔄️ *Asynchronous Data Handling:* `defer` enables the UI to render immediately, displaying a loading state via `Suspense` until the data is available.
- 🏎️ **mproved User Experience:* The `defer`/`await` approach significantly enhances user experience by allowing interaction while data loads in the background.
- 📊 *Comparison:* The tutorial clearly contrasts the standard loader approach (blocking) with the `defer`/`await` approach (non-blocking), highlighting the benefits of the latter.

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[oussamabaladan]

it's not working anymore this method. defer is not in react router anymore and i don't know what to do now ? what is the alternative of this method ?