... "+super.toString(); }14 | The Past, Present, and Future of JavaScriptWhere We’ve Been, Where We Are, and What Lies AheadDr. Axel RauschmayerThe Past, Present, and Future of JavaScript}ModulesJavaScript ... just uint64 (unsigned 64-bit integers) and int64 (signed 64-bit inte-gers), plus properly working operators (+, *, etc.). There are also literals such as -1 23L forint64 (-1 23). Example:> 123L ... 3console.log(map.has(obj)); // trueconsole.log(map.has({})); // false24 | The Past, Present, and Future of JavaScriptThe Past, Present, and Future ofJavaScriptAxel RauschmayerBeijing•Cambridge•Farnham•Köln•Sebastopol•Tokyomap.delete(obj);console.log(map.has(obj));...