fix(core): update

ts/interfaces.ts

@@ -0,0 +1,12 @@
+import * as url from 'url';
+export interface ISimpleRequest {
+  headers: {};
+  parsedUrl: url.URL;
+}
+
+export interface ISimpleResponse {
+  headers: { [key: string]: string };
+  status: number;
+  body: string | Buffer;
+}
+export type IRenderFunction = (req: ISimpleRequest) => Promise<ISimpleResponse>;