tests/cases/compiler/superCallArgsMustMatch.ts(17,15): error TS2345: Argument of type 'string' is not assignable to parameter of type 'number'. ==== tests/cases/compiler/superCallArgsMustMatch.ts (1 errors) ==== class T5{ public foo: T; constructor(public bar: T) { } } class T6 extends T5{ constructor() { // Should error; base constructor has type T for first arg, // which is instantiated with 'number' in the extends clause super("hi"); ~~~~ !!! error TS2345: Argument of type 'string' is not assignable to parameter of type 'number'. var x: number = this.foo; } }