[Type] Allow this.passthrough for repsonse param

index.d.ts

@@ -1,11 +1,15 @@
-import FakeXMLHttpRequest from "fake-xml-http-request";
-import { Params, QueryParams } from "route-recognizer";
+import FakeXMLHttpRequest from 'fake-xml-http-request';
+import { Params, QueryParams } from 'route-recognizer';
+
 type SetupCallback = (this: Server) => void;
 interface SetupConfig {
  forcePassthrough: boolean;
 }
 export type Config = SetupCallback | SetupConfig;
 export class Server {
+ public passthrough: RequestHandler;
+
+ constructor(config?: Config);
  // HTTP request verbs
  public get: RequestHandler;
  public put: RequestHandler;
@@ -14,15 +18,14 @@ export class Server {
  public delete: RequestHandler;
  public options: RequestHandler;
  public head: RequestHandler;
- constructor(setup?: SetupCallback);
 
  public shutdown(): void;
 }
 
 export type RequestHandler = (
  urlExpression: string,
  response: ResponseHandler,
- async?: boolean | number
+ asyncOrDelay?: boolean | number
 ) => void;
 
 export type ResponseData = [number, { [k: string]: string }, string];