fix: Rspack dev gets stuck after removing a page (#80555)

SyMind · web-flow · commit 2caf822d5264 · 2025-06-17T05:34:12.000Z
Rspack's incremental build algorithm causes a situation where deleted
entries in dynamic entries still get built.

If a page is deleted, an infinite loop occurs in the corresponding
`next-app-loader`, causing the entire compilation to hang.

The root cause of the hang lies in `const resolvedPagePath = await
resolver(matchedPagePath)` failing to resolve `resolvedPagePath`,
preventing the loop from exiting.

When `resolvedPagePath` doesn't exist, we should immediately throw an
Error. This logic would also benefit webpack, as scenarios where pages
are deleted during the execution of `next-app-loader` do occur.
diff --git a/packages/next/errors.json b/packages/next/errors.json
@@ -708,5 +708,6 @@
   "707": "Invariant app-page handler received invalid cache entry %s",
   "708": "Failed to persist Chrome DevTools workspace UUID. The Chrome DevTools Workspace needs to be reconnected after the next page reload.",
   "709": "`rspack.getModuleNamedExports` is not supported by the wasm bindings.",
-  "710": "Unable to remove an invalidated webpack cache. If this issue persists you can work around it by deleting %s"
+  "710": "Unable to remove an invalidated webpack cache. If this issue persists you can work around it by deleting %s",
+  "711": "Can't resolve %s"
 }
diff --git a/packages/next/src/build/webpack/loaders/next-app-loader/index.ts b/packages/next/src/build/webpack/loaders/next-app-loader/index.ts
@@ -251,6 +251,8 @@ async function createTreeCodeFromPath(
           ${createMetadataExportsCode(metadata)}
         }]`
           continue
+        } else {
+          throw new Error(`Can't resolve ${matchedPagePath}`)
         }
       }
 

Original file line number	Diff line number	Diff line change
`@@ -708,5 +708,6 @@`
`708`	`708`	`"707": "Invariant app-page handler received invalid cache entry %s",`
`709`	`709`	`"708": "Failed to persist Chrome DevTools workspace UUID. The Chrome DevTools Workspace needs to be reconnected after the next page reload.",`
`710`	`710`	"709": "`rspack.getModuleNamedExports` is not supported by the wasm bindings.",
`711`		`- "710": "Unable to remove an invalidated webpack cache. If this issue persists you can work around it by deleting %s"`
	`711`	`+ "710": "Unable to remove an invalidated webpack cache. If this issue persists you can work around it by deleting %s",`
	`712`	`+ "711": "Can't resolve %s"`
`712`	`713`	`}`
Original file line number	Diff line number	Diff line change
`@@ -251,6 +251,8 @@ async function createTreeCodeFromPath(`
`251`	`251`	`${createMetadataExportsCode(metadata)}`
`252`	`252`	}]`
`253`	`253`	`continue`
	`254`	`+ } else {`
	`255`	+ throw new Error(`Can't resolve ${matchedPagePath}`)
`254`	`256`	`}`
`255`	`257`	`}`
`256`	`258`