Add fastify types to polymorphics

Author: rustworthy

packages/types/src/polymorphics.ts

@@ -17,6 +17,7 @@ export type PolymorphicRequest = BaseRequest &
   BrowserRequest &
   NodeRequest &
   ExpressRequest &
+  FastifyRequest &
   KoaRequest &
   NextjsRequest;
 
@@ -77,3 +78,12 @@ type ExpressRequest = NodeRequest & {
   };
   _reconstructedRoute?: string;
 };
+
+type FastifyRequest = {
+  id?: string;
+  headers?: {
+    [key: string]: string | string[] | undefined;
+  };
+  body?: unknown;
+  raw?: NodeRequest;
+};