background.js

// Change the periodInMinutes property to set time interval
var forumUrl = 'https://definetely-not-reddit.netlify.app/';
var alarm = chrome.alarms.create("myAlarm", { delayInMinutes: 0.05, periodInMinutes: 1 });

chrome.alarms.onAlarm.addListener(function (alarm) {

    // Clear any notification with the same name
    chrome.notifications.clear('procrastinya-notification')

    var notification = chrome.notifications.create(
        'procrastinya-notification', {
        type: 'basic',
        iconUrl: "images/gmail.png", // Notification image 

        // Notification title and message
        title: 'Gmiaol!',
        message: 'New Emiaol from DefinitelyNotReddit...'
    },

        function () { }

    );
});

chrome.notifications.onClicked.addListener(function (notificationId) {
    chrome.tabs.create({ url: forumUrl });
});