On 1/10/17 2:10 PM, Raul-Sebastian Mihăilă wrote:
Do you mean that an implementation is allowed to return an exotic object from the Error constructor?
No, I'm saying some implementations do that, because they want to implement a non-standard "stack" property and the only way to get reasonable behavior (as those implementations define "reasonable") for it is to have the object be an exotic object.
There are other implementation strategies for "stack" that don't involve an exotic Error object, of course (e.g. SpiderMonkey implements it as an accessor property on Error.prototype). They have their own tradeoffs, though.
Not returning an ordinary object from the Error constructor is non-conformant and, assuming that conformance is a requirement for V8, it's a bug.
Sure, just like arguably the presence of the "stack" property to start with is a bug, because per spec it's totally unexpected.
-Boris _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
