incrementOnTypeParameter.ts(4,9): error TS2356: An arithmetic operand must be of type 'any', 'number', 'bigint' or an enum type.
incrementOnTypeParameter.ts(5,48): error TS2356: An arithmetic operand must be of type 'any', 'number', 'bigint' or an enum type.


==== incrementOnTypeParameter.ts (2 errors) ====
    class C<T> {
        a!: T;
        foo() {
            this.a++; 
            ~~~~~~
!!! error TS2356: An arithmetic operand must be of type 'any', 'number', 'bigint' or an enum type.
            for (var i: T = this.a, j = 0; j < 10; i++) { 
                                                   ~
!!! error TS2356: An arithmetic operand must be of type 'any', 'number', 'bigint' or an enum type.
            }
        }
    }
    