tests/cases/compiler/testTypings.ts(5,23): error TS2313: Constraint of a type parameter cannot reference any type parameter from the same type parameter list.


==== tests/cases/compiler/testTypings.ts (1 errors) ====
    interface IComparable<T> {
       compareTo(other: T);
    }
    
    declare function sort<U extends IComparable<U>>(items: U[]): U[];
                          ~~~~~~~~~~~~~~~~~~~~~~~~
!!! error TS2313: Constraint of a type parameter cannot reference any type parameter from the same type parameter list.