function shouldBe(actual, expected) { if (actual !== expected) throw new Error('bad value: ' + actual); } function shouldThrow(func, errorMessage) { var errorThrown = false; var error = null; try { func(); } catch (e) { errorThrown = true; error = e; } if (!errorThrown) throw new Error('not thrown'); if (String(error) !== errorMessage) throw new Error(`bad error: ${String(error)}`); } class Hello { m() { return eval("super()"); } n() { return (0, eval)("super()"); } }; var hello = new Hello(); shouldThrow(() => hello.m(), `SyntaxError: super is not valid in this context.`); shouldThrow(() => hello.n(), `SyntaxError: super is not valid in this context.`);