build js

The code changes are looking ok.
@peterhashair what exactly did you do to test the changes locally? I did not yet have a look for what exactly the changed code is used, would be helpful if you could provide some insights, so I don't need to spent too much time to find some code that allows testing it.

ping @peterhashair this is waiting for your reply to @sgiehl to help him review this effectively.

@sgiehl @justinvelluppillai ops, sorry, I think there is js test for it, which is that one.

But to tests locally. I add this to my

     addEventListener('load', (event) => {
                const targetFrame = window.top.frames[0];
                const targetOrigin = 'https://yourtrackingsite';
                targetFrame.postMessage('{"d":"hello there","maq_initial_value":true}', targetOrigin);
            });

@peterhashair the PR contains two added files, that shouldn't exist.

@sgiehl ops, that was accidentally added, removed.