I eventually solved it by binding a Private symbol with an external value 
to the Function object.

That solves it for the moment. I would love to contribute back to v8 but 
I'm very limited in time now. As soon as I find some time, I will submit a 
CL with an approach based on your suggestion.

Thanks.

On Sunday, April 7, 2019 at 2:43:31 AM UTC+3, Al Mo wrote:
>
> I'm new here so first of all: Hi Everyone :D
>
> So, let's say I make a function this way:
>
> v8::Function::New(<Isolate>, <C_Function>, <Data_Value>);
>
>
> I can then get the <Data_Value> when the Function is invoked with 
> something like: FunctionCallbackInfo->GetData().
>
> This is useful for many things. I'm looking for a way to be able to 
> inspect this data value for a previously defined Function object. Something 
> like Function->GetData(), you get the idea.
>
> So far I haven't succeeded and I've read the docs from a to z. Any ideas?
>

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