Proxy the context of a constructor function

constructor-proxy.js

// Thanks @phillipskevin

function wrap(C) {
  const instanceHandler = {
    set(target, property, value, receiver) {
      console.log(property, value);
      return true;
    }
  }

  const constructorHandler = {
    construct(target, args) {
      const instanceProxy = new Proxy(Object.create(C.prototype), instanceHandler);
      C.apply(instanceProxy, args);
      return instanceProxy;
    }
  }

  return new Proxy(C, constructorHandler);
}

function Counter() {
  setInterval(this.onTick.bind(this), 1000)
}
Counter.prototype.onTick = function() {
    const now = new Date()
    // want to call the set trap
    this.hours = now.getHours()
    // want to call the set trap
    this.minutes = now.getMinutes()
    // want to call the set trap
    this.seconds = now.getSeconds()
};

Counter = wrap(Counter);
const instance = new Counter();