unusedTypeParameterInMethod1.ts(2,15): error TS6196: 'X' is declared but never used.


==== unusedTypeParameterInMethod1.ts (1 errors) ====
    class A {
        public f1<X, Y, Z>() {
                  ~
!!! error TS6196: 'X' is declared but never used.
            var a!: Y;
            var b!: Z;
            a;
            b;
        }
    }