https://www.tecmasolutions.com/js_sito_tecma/app.js

1window.addEventListener("load", function () {
2  if ("serviceWorker" in navigator) {
3    // declaring scope manually
4    navigator.serviceWorker.register("../sw.js", { scope: "../" }).then(
5      function (registration) {
6        console.log("Service worker registration succeeded:", registration);
7      },
8      /*catch*/ function (error) {
9        console.log("Service worker registration failed:", error);
10      }
11    );
12  } else {
13    console.log("Service workers are not supported.");
14  }
15});