simulate fbasyncInit behaviour on a webpack bundled library

Im using webpack to build a library targeted for browsers. And i Would really like to replicate fbasyncinit behavior without manually modyfing the bundled library.

Does webpack provide any way to call a function after loading the library itself ?

Or is there another alternative bundler that allows this?

For those unnaware, window.fbasyncinit is a function facebook sdk calls when finish loading, so you write the function to initialize facebook sdk stuff.

from simulate fbasyncInit behaviour on a webpack bundled library