Merge pull request #30 from reactjs/sync-6570e6cd

Sync with react.dev @ 6570e6c

Author: yousufkalim

src/content/reference/react-dom/hooks/useFormStatus.md

@@ -38,7 +38,7 @@ function Submit() {
   return <button disabled={status.pending}>Submit</button>
 }
 
-export default App() {
+export default function App() {
   return (
     <form action={action}>
       <Submit />

src/content/reference/react/use-server.md

@@ -115,11 +115,13 @@ async function requestUsername(formData) {
   // ...
 }
 
-export default App() {
-  <form action={requestUsername}>
-    <input type="text" name="username" />
-    <button type="submit">Request</button>
-  </form>
+export default function App() {
+  return (
+    <form action={requestUsername}>
+      <input type="text" name="username" />
+      <button type="submit">Request</button>
+    </form>
+  );
 }
 ```
 

src/content/reference/react/useSyncExternalStore.md

@@ -57,7 +57,7 @@ The current snapshot of the store which you can use in your rendering logic.
 
 * If a different `subscribe` function is passed during a re-render, React will re-subscribe to the store using the newly passed `subscribe` function. You can prevent this by declaring `subscribe` outside the component.
 
-* If the store is mutated during a [non-blocking transition update](/reference/react/useTransition), React will fall back to performing that update as blocking. Specifically, React will call `getSnapshot` a second time just before applying changes to the DOM. If it returns a different value than when it was called originally, React will restart the transition update from scratch, this time applying it as a blocking update, to ensure that every component on screen is reflecting the same version of the store.
+* If the store is mutated during a [non-blocking transition update](/reference/react/useTransition), React will fall back to performing that update as blocking. Specifically, for every transition update, React will call `getSnapshot` a second time just before applying changes to the DOM. If it returns a different value than when it was called originally, React will restart the update from scratch, this time applying it as a blocking update, to ensure that every component on screen is reflecting the same version of the store.
 
 * It's not recommended to _suspend_ a render based on a store value returned by `useSyncExternalStore`. The reason is that mutations to the external store cannot be [marked as non-blocking transition updates](/reference/react/useTransition), so they will trigger the nearest [`Suspense` fallback](/reference/react/Suspense), replacing already-rendered content on screen with a loading spinner, which typically makes a poor UX.