aop.construct.js

class A {  
  constructor (value) { this.value = value; }
  getValue() { return this.value; } 
}

const proxiedClass = new Proxy(A, {
  construct: function(target, [ first ], newTarget) {
     return new target(first + ":proxy-value");
  }
});

const obj = new proxiedClass("foo");
console.log(obj.getValue());