![This Week In React #138: React-Router, Rspack, RSC, Storybook, Astro, Million, Superflare, Tremor, React-Email, Ink, Metro, VisionCamera, Jest, Proto... | This Week In React This Week In React #138: React-Router, Rspack, RSC, Storybook, Astro, Million, Superflare, Tremor, React-Email, Ink, Metro, VisionCamera, Jest, Proto... | This Week In React](https://thisweekinreact.com/emails/issues/138/reactrouterlazy.jpg)
This Week In React #138: React-Router, Rspack, RSC, Storybook, Astro, Million, Superflare, Tremor, React-Email, Ink, Metro, VisionCamera, Jest, Proto... | This Week In React
![javascript - display Loader while api is fetching data using react-router-dom, defer, useLoaderData - Stack Overflow javascript - display Loader while api is fetching data using react-router-dom, defer, useLoaderData - Stack Overflow](https://i.stack.imgur.com/YKdX7.gif)
javascript - display Loader while api is fetching data using react-router-dom, defer, useLoaderData - Stack Overflow
![loading the CommonJS build of React Router on a page that is already running the ES modules build · Issue #647 · single-spa/single-spa · GitHub loading the CommonJS build of React Router on a page that is already running the ES modules build · Issue #647 · single-spa/single-spa · GitHub](https://user-images.githubusercontent.com/13197560/96694259-d0089400-13ba-11eb-8371-c2a513c5f81a.png)
loading the CommonJS build of React Router on a page that is already running the ES modules build · Issue #647 · single-spa/single-spa · GitHub
![React Router 6] - Error: You defined a loader for route "0-2-2" but didn't return anything from your `loader` function. Please return a value or `null`. : r/learnreactjs React Router 6] - Error: You defined a loader for route "0-2-2" but didn't return anything from your `loader` function. Please return a value or `null`. : r/learnreactjs](https://external-preview.redd.it/react-router-6-error-you-defined-a-loader-for-route-0-2-2-v0-sE8gdfNCLVxUO4n33yaYITxFBCGUkYoWdoVlOqAAzAQ.jpg?width=640&crop=smart&auto=webp&s=ea081d5bab70607f6fac81aad1452b2a869c820c)