Restore previous server manifest structure for Turbopack for now

Author: unstubbable

packages/next/src/build/webpack/plugins/flight-client-entry-plugin.ts

@@ -55,7 +55,11 @@ const PLUGIN_NAME = 'FlightClientEntryPlugin'
 type Actions = {
   [actionId: string]: {
     workers: {
-      [name: string]: { moduleId: string | number; async: boolean }
+      [name: string]:
+        | { moduleId: string | number; async: boolean }
+        // TODO: This is legacy for Turbopack, and needs to be changed to the
+        // object above.
+        | string
     }
     // Record which layer the action is in (rsc or sc_action), in the specific entry.
     layer: {

packages/next/src/server/app-render/action-utils.ts

@@ -18,11 +18,17 @@ export function createServerModuleMap({
     {},
     {
       get: (_, id: string) => {
-        const { moduleId, async } =
+        const workerEntry =
           serverActionsManifest[
             process.env.NEXT_RUNTIME === 'edge' ? 'edge' : 'node'
           ][id].workers[normalizeWorkerPageName(pageName)]
 
+        if (typeof workerEntry === 'string') {
+          return { id: workerEntry, name: id, chunks: [] }
+        }
+
+        const { moduleId, async } = workerEntry
+
         return { id: moduleId, name: id, chunks: [], async }
       },
     }