tests/cases/compiler/unusedParametersInLambda2.ts(4,17): error TS6133: 'X' is declared but never used.


==== tests/cases/compiler/unusedParametersInLambda2.ts (1 errors) ====
    
    class A {
        public f1() {
            return (X, Y) => {
                    ~
!!! error TS6133: 'X' is declared but never used.
                Y;
            }
        }
    }