Is it possible to read function closure via V8 addon?

[Moshe Simantov]

Please see the original question here: http://stackoverflow.com/questions/39399717/is-it-possible-to-read-function-closure-via-v8-addo

I want to write a Node.js V8 addon in C++ that will give me access to functions closures.

Something like this:

const myAddon = require('./build/Release/addon');

const counter = (() => {
  let i = 0;
  return () => ++i;
})();

counter(); // 1
counter(); // 2

const closure = myAddon(counter);
console.log(closure.i); // prints "3"

Is it possible? Where this information stored on the V8 engine?