Search global inbox for notification types

inbox.js

let lastPageURL = $("#inbox-pager a:nth-last-child(2)").attr("href");
let lastPage = parseInt(lastPageURL.substring(lastPageURL.indexOf("&page=") + 6));
let baseURL = lastPageURL.substring(0, lastPageURL.indexOf("&page=") + 6);
var itemTypes = {};
function fetchPage(page) {
    if (page > lastPage) {
    	console.log(itemTypes);
    	return;
    }
	console.log(baseURL + page);
	$.get(baseURL + page, function(data) {
		$(data).find("table.history-table tr td:nth-child(3)").each(function() {
			let type = this.innerText.trim();
			if (typeof itemTypes[type] == "undefined") {
				itemTypes[type] = page;
			}
		});
		window.setTimeout(function() {
			fetchPage(++page);
		}, 100);
	});
} 
fetchPage(1);