const target = { a: 1, b: 2 };
const handler = {
  get(obj, prop) {
    return prop in obj ? obj[prop] * 2 : 'Not found';
  }
};

const proxy = new Proxy(target, handler);

// Add a property to the original target
target.c = 3;

// Attempt to access properties through proxy and Reflect
console.log([
  proxy.a,
  proxy.z,
  Reflect.get(target, 'b'),
  Reflect.get(proxy, 'c')
]);