生成demo中间件

src/core/middleware/demo.middleware.spec.ts

@@ -0,0 +1,7 @@
+import { DemoMiddleware } from './demo.middleware';
+
+describe('DemoMiddleware', () => {
+  it('should be defined', () => {
+    expect(new DemoMiddleware()).toBeDefined();
+  });
+});

src/core/middleware/demo.middleware.ts

@@ -0,0 +1,8 @@
+import { Injectable, NestMiddleware } from '@nestjs/common';
+
+@Injectable()
+export class DemoMiddleware implements NestMiddleware {
+  use(req: any, res: any, next: () => void) {
+    next();
+  }
+}