| function shouldBe(actual, expected) { | |
| if (actual !== expected) | |
| throw new Error('bad value: ' + actual); | |
| } | |
| var called = null; | |
| class B { | |
| constructor() { | |
| called = 'B'; | |
| } | |
| } | |
| class C extends B { | |
| } | |
| B.prototype.constructor = function F() { | |
| called = 'F'; | |
| }; | |
| new C(); | |
| shouldBe(called, 'B'); |