injection example

/* htts://sample.io/app.js
 *
 */

(function() { 
  var BadgeInjector = (function (name) {
    var root = typeof window !== 'undefined' ? window : global;
    var had = Object.prototype.hasOwnProperty.call(root, name);
    var prev = root[name];
    var me = root[name] = {};

    if (typeof module !== 'undefined' && module.exports)
      module.exports = me;

    me.noConflict = function () {
      if (root[name] === me) {
        root[name] = had ? prev : undefined;

        if (!had) {
          try { delete root[name]; }
          catch (ex) {}
        }
      }

      return me;
    };

    return me;
  }('BadgeInjector'));

  BadgeInjector.init = function() {};
}());



/* htts://another-sample.io/loader.js
 *
 */
function loadScript(url, callback) {
  var script = document.createElement("script");
  script.type = "text/javascript";

  if (script.readyState) {  // IE
    script.onreadystatechange = function() {
      if (script.readyState == "loaded" || script.readyState == "complete") {
        script.onreadystatechange = null;
        callback();
      }
    };
  } else {  // Others
    script.onload = function() {
      callback();
    };
  }

  script.src = url;
  document.body.appendChild(script);
}

loadScript("https://unpkg.com/vue", function() {
  console.log("Vue Loaded...");
  console.log("Loading Vuetify...");
  loadScript("https://cdn.jsdelivr.net/npm/vuetify@2.x/dist/vuetify.js", function() {
    console.log("Vuefity Loaded...");
    console.log("Loading Badge App...");
    loadScript("https://sample.io/app.js?ignore_cache=true", function() {
      console.log("Baged App loaded.");
      BadgeInjector.init();
    });
  });
});