Just for clarification, I meant Object.getOwnPropertyDescriptor(new Error,
"stack").get.apply(someError) (since Error.prototype.stack doesn't exist).
On Sunday, November 16, 2014 9:10:57 PM UTC-8, Francisco Tolmasky wrote:
>
> I am writing an application that wants to examine the state of an
> application without mutating it.
> If the application throws an error, I'd like to be able to grab the string
> stack trace located in error.stack.
> In JSCore for example, this isn't a problem because I can do
> Object.getOwnPropertyDescriptor(error, "stack").value.
> However, in v8, stack is a getter/setter, not a value. This would maybe
> not be a problem if I could do something like
> Error.prototype.stack.apply(myError). But, as it turns out it is a
> *unique* getter for every error:
> Object.getOwnPropertyDescriptor(new Error, "stack").get !==
> Object.getOwnPropertyDescriptor(new Error, "stack").get.
> As such, I would at the very least like to be able to make sure that its
> the normal stack getter (in which case I can feel
> safe that its not doing any funny business for example if the user has
> overwritten it with their own custom stack getter
> that mutates the state of the program, or possibly throws an exception
> itself!). So far the best I can come up with is to check
> whether the source of the getter is "function() { [native code] }" which
> is obviously not ideal since this doesn't preclude the user
> havign set the stack getter to a *different* native function. Is there any
> way to achieve what I want that I'm missing?
>
> Thanks,
>
> Francisco
>
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