On Sat, Apr 11, 2015 at 9:09 AM Sébastien Cevey <seb.cevey at guardian.co.uk>
wrote:

> Does the same apply to subclassing Error?
>

Subclassing Error works in V8 (Chrome  43).

Caitlin, the only issue I know of in V8 regarding subclassing is
subclassing Object and the weird wrapper we create.

class X extends Object {}
let x = new X('hi');
print(x);  // Oops, we created a String wrapper.

This is because we haven't implemented new.target for our self hosted
Object function constructor.

https://code.google.com/p/v8/issues/detail?id=3886
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Subclassing Error works in V8 (Chrome  43).

Caitlin, the only issue I know of in V8 regarding subclassing is
subclassing Object and the weird wrapper we create.

```js
class X extends Object {}
let x = new X('hi');
print(x);  // Oops, we created a String wrapper.
```

This is because we haven't implemented `new.target` for our self hosted
`Object` function constructor.

https://code.google.com/p/v8/issues/detail?id=3886