fix(platform-express): Fix hook called twice when using platform-expr…

…ess builder

packages/common/src/platform-builder/builder/PlatformBuilder.ts

@@ -1,4 +1,4 @@
-import {constructorOf, Type} from "@tsed/core";
+import {classOf, constructorOf, Type} from "@tsed/core";
 import {IDIConfigurationOptions, InjectorService} from "@tsed/di";
 import {IRoute, Platform, PlatformApplication} from "../../platform";
 import {ContextMiddleware} from "../middlewares/ContextMiddleware";
@@ -204,5 +204,8 @@ export abstract class PlatformBuilder {
     this._rootModule = this.injector.invoke(module, undefined, {
       imports: this.settings.imports
     });
+
+    this.injector.delete(constructorOf(this._rootModule));
+    this.injector.delete(classOf(this._rootModule));
   }
 }

packages/platform-express/test/server.spec.ts

@@ -0,0 +1,32 @@
+import {Configuration} from "@tsed/di";
+import {PlatformExpress} from "@tsed/platform-express";
+import * as Sinon from "sinon";
+import { nameOf } from '@tsed/core/src';
+
+@Configuration({
+  logger: {
+    level: "off"
+  }
+})
+class Server {
+  $beforeRoutesInit() {
+
+  }
+}
+
+const sandbox = Sinon.createSandbox();
+describe("bootstrap", () => {
+  beforeEach(() => {
+    sandbox.stub(Server.prototype, "$beforeRoutesInit");
+  });
+  afterEach(() => {
+    sandbox.restore();
+  });
+  it("should call once the $beforeRouteInits hooks", async () => {
+    const server = await PlatformExpress.bootstrap(Server);
+
+    console.log(Array.from(server.injector.keys()).map(nameOf));
+
+    return Server.prototype.$beforeRoutesInit.should.have.been.calledOnce;
+  });
+});