We need a more precise type for the fullURL since the value we pass i…

…s not necessarly what fetch receives. The same applies to the second parameter (with the exception of body that perhaps can be coerced by the caller)

src/types.ts

@@ -29,8 +29,8 @@ type EnhancedRequestInit<T = string> = Omit<RequestInit, 'body' | 'method'> & {
   query?: SearchParams
   params?: PathParams<T>
   trace?: (
-    input: Parameters<typeof fetch>[0],
-    init: Parameters<typeof fetch>[1],
+    fullUrl: string | URL,
+    init: EnhancedRequestInit & { body: unknown },
     response: Awaited<ReturnType<typeof fetch>>,
   ) => void | Promise<void>
 }