pass relativeProjectDir to route module

Author: mischnic

packages/next/src/build/utils.ts

@@ -795,6 +795,7 @@ export async function isPageStatic({
           name: edgeInfo.name,
           useCache: true,
           distDir,
+          relativeProjectDir: path.relative(process.cwd(), dir),
         })
         const mod = (
           await runtime.context._ENTRIES[`middleware_${edgeInfo.name}`]

packages/next/src/server/next-server.ts

@@ -1766,6 +1766,7 @@ export default class NextNodeServer extends BaseServer<
 
       result = await run({
         distDir: this.distDir,
+        relativeProjectDir: relative(process.cwd(), this.dir),
         name: middlewareInfo.name,
         paths: middlewareInfo.paths,
         edgeFunctionEntry: middlewareInfo,
@@ -2039,6 +2040,7 @@ export default class NextNodeServer extends BaseServer<
     const { run } = require('./web/sandbox') as typeof import('./web/sandbox')
     const result = await run({
       distDir: this.distDir,
+      relativeProjectDir: relative(process.cwd(), this.dir),
       name: edgeInfo.name,
       paths: edgeInfo.paths,
       edgeFunctionEntry: edgeInfo,

packages/next/src/server/route-modules/route-module.ts

@@ -224,7 +224,8 @@ export abstract class RouteModule<
           ),
         },
         serverFilesManifest:
-          self.__SERVER_FILES_MANIFEST as any as RequiredServerFilesManifest,
+          (self.__SERVER_FILES_MANIFEST as any as RequiredServerFilesManifest) ||
+          {},
         clientReferenceManifest: self.__RSC_MANIFEST?.[srcPage],
         serverActionsManifest: maybeJSONParse(self.__RSC_SERVER_MANIFEST),
         subresourceIntegrityManifest: maybeJSONParse(
@@ -332,7 +333,8 @@ export abstract class RouteModule<
           shouldCache: !this.isDev,
         }),
         this.isDev
-          ? ({} as any)
+          ? // in dev, routerServerGlobal is read instead for the nextConfig
+            ({} as any)
           : loadManifestFromRelativePath<RequiredServerFilesManifest>({
               projectDir,
               distDir: this.distDir,

packages/next/src/server/web/sandbox/context.test.ts

@@ -19,6 +19,7 @@ describe('Next.js sandbox Request constructor', () => {
       onWarning: () => {},
       useCache: false,
       distDir: '/tmp',
+      relativeProjectDir: '',
       edgeFunctionEntry: {
         assets: [],
         wasm: [],

packages/next/src/server/web/sandbox/sandbox.ts

@@ -35,6 +35,7 @@ interface RunnerFnParams {
   useCache: boolean
   edgeFunctionEntry: Pick<EdgeFunctionDefinition, 'assets' | 'wasm' | 'env'>
   distDir: string
+  relativeProjectDir: string
   incrementalCache?: any
   serverComponentsHmrCache?: ServerComponentsHmrCache
 }
@@ -91,6 +92,15 @@ export async function getRuntimeContext(
     RouterServerContextSymbol
   ] = routerServerGlobal[RouterServerContextSymbol]
 
+  runtime.context.globalThis.process = {
+    ...runtime.context.globalThis.process,
+    env: {
+      ...runtime.context.globalThis.process?.env,
+      // Needed for accesssing routerServerGlobal in dev
+      __NEXT_RELATIVE_PROJECT_DIR: params.relativeProjectDir,
+    },
+  }
+
   if (params.serverComponentsHmrCache) {
     runtime.context.globalThis.__serverComponentsHmrCache =
       params.serverComponentsHmrCache