> javascript
> console.log('WeTravel GA4 tracking script loaded');
> > const eventMethod = window.addEventListener ? 'addEventListener' : 'attachEvent';
> const eventer = window[eventMethod];
> const messageEvent = eventMethod === 'attachEvent' ? 'onmessage' : 'message';
> > console.log('WeTravel postMessage listener being registered');
> > eventer(messageEvent, (e) => {
> console.log('WeTravel message received:', e.data);
> });
>
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