Have Tamper Monkey auto load changes for development only

GMAutoLoad.js

(function () {
  "use strict";
  const scrape = async () => {
   const data = await fetch("http://127.0.0.1:8080/index.js");
   const script = await data.text();
   eval(script);
  };
  GM_registerMenuCommand("Auto Load Example", scrape);
})();
// run local webserver using package npm: http-server

index.js

(function () {
  "use strict";
  console.log("Hello, World");
})()