[Question] Is there a way to reference the object in the callback?

[Yaojian]

I tried to execute a function which belongs to the weak referenced object inside the callback, for example, obj.dispose(). Is it possible?

The callback passed in weak(Object obj [, Function callback]) does not receive any argument when it is invoked, while referencing the obj inside the callback directly will prevent the callback being invoked as the obj still has active reference and cannot be GCed.

[acarstoiu]

Yes, there is, see the README.md file. What you're looking for is the weak.get(ref) function.

[mvduin]

Calling weak.get(ref) inside the callback results in a segfault.