Pixijs V5 support and import

Hello,

I've just started to develop with pixi and I wanted 58ED to use EZGUI. But I can't handle to proper import EZGUI.
It always says EZGUI.d.ts is no module (as there are no exported modules)
import "ezgui" works gives no error, but EZGUI variable is not defined. I tried to use Webpack to import directly from ezgui.js but then pixi is not defined as it is part of the main.js file.

So I have a few questions: