se/SE/se-lib/S.php.expiredSessionTimer.js

var DBG = DBG || false;
var DBG1 = 1;
if (!BASE_URL) throw "Mising BASE_URL";

if ('serviceWorker' in navigator) {
	navigator.serviceWorker.register(BASE_URL + 'sw.js').then(function() {
		return navigator.serviceWorker.ready;
	}).then(function (reg) {
		DBG && console.log("SW registration succeeded. Scope is "+reg.scope, { reg });
		sendMsgToServiceWorker('session_expired');
	}).catch(function (err) {
		DBG && console.error("SW registration failed with error "+err);
	});
}

function sendMsgToServiceWorker(data) {
	if (navigator.serviceWorker && navigator.serviceWorker.controller) {
		navigator.serviceWorker.controller.postMessage(data);
	}
}