Code to listen to Web Push Notifications

intercept_web_notification.js

//inject before starting the notification testing
window.notifications = [];
window.DefaultNotification = window.Notification; 
(function () {
    function notificationCallback(title, opt) {
        console.log("notification title: ", title);
        console.log("notification body: ", opt.body);
        console.log("notification tag: ", opt.tag);
        console.log("notification icon: ", opt.icon);
    }
    const handler = {
        construct(target, args) {
            notificationCallback(...args);
            var notification = new target(...args);
            notifications.push(notification);
            return notification;
        }
    };
    const ProxifiedNotification = new Proxy(Notification, handler);
    window.Notification = ProxifiedNotification;
})();

//resetting back to the default behaviour
window.Notification = window.DefaultNotification;



//For service Worker:
 var registration = await navigator.serviceWorker.getRegistration("https://framework.realtime.co/demo/web-push/")
 var notifications = await registration.getNotifications();