callgraph index.js#function ?

[ghost]

Hi,
It would be great to let specify a function in a JS file as an entry. As a workaround, I put the targeted function alone, with it's dependencies in one file, in order to omit other functions, but this is tedious.

Context:
Optional. It could be easier to track a single function as an entry, if file contains many many functions.

Thank you.