如何根据更改的内部数组属性值执行部分深度合并

function deepMerge(original, changes) {
  // 遍历对象的属性
  for (let key in changes) {
    // 检查属性是否存在于原始对象中
    if (key in original) {
      // 如果属性值是数组
      if (Array.isArray(original[key]) && Array.isArray(changes[key])) {
        // 找出原始数组和更改后的数组之间的差异
        let diff = changes[key].filter(item => !original[key].includes(item));

        // 遍历差异项
        for (let item of diff) {
          // 如果差异项是新增的元素
          if (!original[key].includes(item)) {
            original[key].push(item);
          }
          // 如果差异项是删除的元素
          else {
            original[key] = original[key].filter(i => i !== item);
          }
        }
      }
      // 如果属性值是对象
      else if (typeof original[key] === 'object' && typeof changes[key] === 'object') {
        // 递归执行深度合并
        original[key] = deepMerge(original[key], changes[key]);
      }
      // 如果属性值是其他类型
      else {
        original[key] = changes[key];
      }
    }
    // 如果属性不存在于原始对象中
    else {
      original[key] = changes[key];
    }
  }

  return original;
}

// 示例用法
let originalObj = {
  name: 'John',
  age: 30,
  hobbies: ['reading', 'coding', 'gaming'],
  address: {
    city: 'New York',
    country: 'USA'
  }
};

let changesObj = {
  age: 31,
  hobbies: ['reading', 'cooking'],
  address: {
    city: 'San Francisco'
  }
};

let mergedObj = deepMerge(originalObj, changesObj);
console.log(mergedObj);