Jankily adds gcal notifications to webapp.

gcal_notif.js

// ==UserScript==
// @name       Google Calendar Desktop Notifications
// @namespace  https://www.rebeccapruim.com/
// @version    0.1
// @description  Provides desktop notification support for Google Calendar's webapp.
// @match      https://calendar.google.com/*
// @copyright  2019+, Rebecca J. Pruim
// @grant unsafeWindow
// ==/UserScript==

(function(){
    const fallbackToConsoleLog = true;
    if (!("Notification" in window)) {
        console.log("Desktop Notifications not supported.");
    }else if (Notification.permission === "granted") {
        unsafeWindow.alert = function(notif) {
            new Notification(notif);
        }
        return;
    }else if (Notification.permission !== "denied") {
        Notification.requestPermission().then(function(permission) {
            if (permission === "granted") {
                unsafeWindow.alert = function(notif) {
                    new Notification(notif);
                }
                return;
            }
        });
    }
    if(fallbackToConsoleLog){
        unsafeWindow.alert = console.log;
    }
})();