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packages/next/src/server/dev/hot-reloader-turbopack.ts

@@ -60,6 +60,7 @@ import {
   isWellKnownError,
   printNonFatalIssue,
   normalizedPageToTurbopackStructureRoute,
+  TurbopackInternalError,
 } from './turbopack-utils'
 import {
   propagateServerField,
@@ -452,6 +453,23 @@ export async function createHotReloaderTurbopack(
         }
       }
     } catch (e) {
+      if (e instanceof TurbopackInternalError) {
+        sendToClient(client, {
+          action: HMR_ACTIONS_SENT_TO_BROWSER.SYNC,
+          errors: [
+            {
+              message:
+                'An unexpected Turbopack error occurred. Please see the output of `next dev` for more details.',
+            },
+          ],
+          hash: String(++hmrHash),
+          warnings: [],
+          versionInfo: await versionInfoPromise,
+        })
+        client.close()
+        return
+      }
+
       // The client might be using an HMR session from a previous server, tell them
       // to fully reload the page to resolve the issue. We can't use
       // `hotReloader.send` since that would force every connected client to