add route to express middleware interface (#7841)

scopes/harmony/express/express.main.runtime.ts

@@ -94,11 +94,13 @@ export class ExpressMain {
     });
     if (!options?.disableBodyParser) this.bodyParser(app);
 
-    this.middlewareSlot
-      .toArray()
-      .flatMap(([, middlewares]) =>
-        middlewares.flatMap((middlewareManifest) => app.use(middlewareManifest.middleware))
-      );
+    const middlewaresSlot = this.middlewareSlot.values().flat();
+    middlewaresSlot.forEach(({ route, middleware }) => {
+      if (!route) app.use(middleware);
+      // eslint-disable-next-line @typescript-eslint/no-misused-promises
+      if (route) app.use(route, middleware);
+    });
+
     sortedRoutes.forEach((routeInfo) => {
       const { method, path, middlewares, disableNamespace } = routeInfo;
       // TODO: @guy make sure to support single middleware here.

scopes/harmony/express/index.ts

@@ -1,5 +1,6 @@
 export { RouteSlot } from './express.main.runtime';
 export { Route, Verb } from './types';
-export { Request, Response, NextFunction } from './types';
+export { Request, Response, NextFunction, Middleware } from './types';
+export type { MiddlewareManifest } from './middleware-manifest';
 export type { ExpressMain } from './express.main.runtime';
 export { ExpressAspect } from './express.aspect';

scopes/harmony/express/middleware-manifest.ts

@@ -1,5 +1,6 @@
 import { Middleware } from './types';
 
 export interface MiddlewareManifest {
+  route?: string;
   middleware: Middleware;
 }

scopes/harmony/express/types/route.ts

@@ -5,7 +5,7 @@ import { Response } from './response';
 /**
  * define express Middleware
  */
-export type Middleware = (req: Request, res: Response, next: NextFunction) => Promise<any>;
+export type Middleware = (req: Request, res: Response, next: NextFunction) => void | Promise<any>;
 
 export enum Verb {
   WRITE = 'write',