Not able to use rtc-captureconfig in the Browser

[cloud4every1]

The functionality seems to be what I'm looking for (especially the screen capturing).
The rtc.io module is working fine, so I'm able to forward the camera screen to another browser.

However, I'm not able to use this package in the browser.

I tried also to generate a dedicated js file which contains only

var capture = require('rtc-captureconfig'); var getUserMedia = require('getusermedia');

as shown in the description and generated a bundle file with browserify but no look so far.

maybe you have an idea of how to use it in a HTML environment.
Thanks!