Petka Antonov

If there's really code relying on function never being called we should not make that change either

perhaps it's better to use propertyIsConfigurable separately?

Using `Object.defineProperty` only needs `configurable` true or undefined descriptor, so for this code `propertyIsConfigurable` would be more appropriate check

It looks very similar to v8, maybe they can be put together for less code?

Yes, using less code to implement the same thing is preferable

build fails because of the unused variable

syntax error?

So which object stream library do you suggest?

Yes I am surprised it's not implemented :) go for it

PRs welcome of course :) it has been 2-3 years so it's expected some things have been changed in v8 :P