docs: Clarify popstate handling in caching exercise

Ala-Ben-Aissia · Ala-Ben-Aissia · commit 350493d15cf3 · 2025-08-19T12:31:31.000+01:00
diff --git a/exercises/04.router/05.problem.cache/ui/index.js b/exercises/04.router/05.problem.cache/ui/index.js
@@ -61,6 +61,7 @@ function Root() {
 
 			// 🐨 change this to setContentKey(historyKey)
 			startTransition(() => setContentPromise(nextContentPromise))
+			// 🐨 otherwise, setContentKey(historyKey) directly (no transition needed)
 		}
 		window.addEventListener('popstate', handlePopState)
 		return () => window.removeEventListener('popstate', handlePopState)

Original file line number	Diff line number	Diff line change
`@@ -61,6 +61,7 @@ function Root() {`
`61`	`61`
`62`	`62`	`// 🐨 change this to setContentKey(historyKey)`
`63`	`63`	`startTransition(() => setContentPromise(nextContentPromise))`
	`64`	`+ // 🐨 otherwise, setContentKey(historyKey) directly (no transition needed)`
`64`	`65`	`}`
`65`	`66`	`window.addEventListener('popstate', handlePopState)`
`66`	`67`	`return () => window.removeEventListener('popstate', handlePopState)`