Proxy API usage scenarios —— Enhanced Object

enhanced-object.js

const enhancedObject = (target) =>
  new Proxy(target, {
    get(target, property) {
      if (property in target) {
        return target[property];
      } else {
        return getPropertyValue(property, target);
      }
    },
  });

let value;
function getPropertyValue(property, target) {
  value = null;
  for (const key of Object.keys(target)) {
    if (typeof target[key] === "object") {
      getPropertyValue(property, target[key]);
    } else if (typeof target[property] !== "undefined") {
      value = target[property];
      break;
    }
  }
  return value;
}