拼合嵌套对象typescript

function mergeNestedObjects(obj1: any, obj2: any): any {
  const mergedObj = { ...obj1 };

  for (const key in obj2) {
    if (obj2.hasOwnProperty(key)) {
      if (typeof obj2[key] === 'object' && obj2[key] !== null && !Array.isArray(obj2[key])) {
        if (typeof mergedObj[key] === 'object' && mergedObj[key] !== null && !Array.isArray(mergedObj[key])) {
          mergedObj[key] = mergeNestedObjects(mergedObj[key], obj2[key]);
        } else {
          mergedObj[key] = { ...obj2[key] };
        }
      } else {
        mergedObj[key] = obj2[key];
      }
    }
  }

  return mergedObj;
}

const obj1 = {
  name: 'John',
  age: 30,
  address: {
    city: 'New York',
    country: 'USA'
  }
};

const obj2 = {
  age: 31,
  address: {
    city: 'San Francisco'
  },
  hobbies: ['reading', 'traveling']
};

const mergedObject = mergeNestedObjects(obj1, obj2);
console.log(mergedObject);