fix: IMiddleware type is incompatible (#3419)

index.d.ts

@@ -466,7 +466,7 @@ declare module 'egg' {
     headers: { [key: string]: string };
   }
 
-  export interface Router extends KoaRouter {
+  export interface Router extends KoaRouter<any, Context> {
     /**
      * restful router api
      */

test/fixtures/apps/app-ts/app/middleware/index.d.ts

@@ -0,0 +1,7 @@
+import TestMiddleware from './test';
+
+declare module 'egg' {
+  interface IMiddleware {
+    test: typeof TestMiddleware;
+  }
+}

test/fixtures/apps/app-ts/app/middleware/test.ts

@@ -0,0 +1,8 @@
+import { Context } from 'egg';
+
+export default () => {
+  return async (ctx: Context, next: () => Promise<any>) => {
+    ctx.locals.url = ctx.url;
+    await next();
+  };
+}

test/fixtures/apps/app-ts/app/router.ts

@@ -2,6 +2,7 @@ import { Application } from 'egg';
 
 export default (app: Application) => {
   const controller = app.controller;
+  app.router.get('/test', app.middleware.test(), controller.foo.getData);
   app.get('/foo', controller.foo.getData);
   app.post('/', controller.foo.getData);
 }

test/ts/index.test.js

@@ -47,5 +47,13 @@ describe('test/ts/index.test.js', () => {
         .expect({ env: 'unittest' })
         .end(done);
     });
+
+    it('controller of app.router run ok', done => {
+      request(app.callback())
+        .get('/test')
+        .expect(200)
+        .expect({ env: 'unittest' })
+        .end(done);
+    });
   });
 });