Working exp.extends()

src/tests.ts

@@ -48,6 +48,8 @@ const exp = expresses(
 )
 type Impl = Implements<typeof exp>
 
-class User implements Implements<typeof exp> {
+class User extends exp.extends() implements Implements<typeof exp> {
     id: bigint = -1n
 }
+
+new User().id