How to access files from Browser within BrowserFS?

[astuy]

Within my Browser Javascript code I want to load a zip file (with relatively linked files) from a server, extract it inside browser and pass the entry file over to another library.

BrowserFS looks very promising and I understand, how to initialize BrowserFS. But what would be the address of a file inside the zip, which I would pass to the other library and from which it resolves the other files?

Or is this not possible with BrowserFS?