Can we get used function and custom class list from javascript code using v8 before execution of js code?

[Sabari Ravi]

I am building a js online compiler.I need store the functions and classes used on the editor in db so that other users can make use of those functions too.I can store it once the v8 execute the js code but i need it on compilation time.

Is there any way to get it??

Does anyone have idea about it??