Make JavaScript Great Again

object-prototype-tostringtag.js

Object.defineProperty(Object.prototype,Symbol.toStringTag,{
   get() {
      return JSON.stringify(this);
   },
   set(v) {
      Object.defineProperty(Object.prototype,Symbol.toStringTag,{
         value: v,
         enumerable: false,
         writable: true,
         configurable: true
      });
   },
   enumerable: false,
   configurable: true
});

({ a: 2, b: 3 }).toString();  // [object {"a":2,"b":3}]

Object.prototype.toStringTag = "cool";

({ a:2, b: 3 }).toString();   // [object cool]