如何将对象的键值更改为lowerCase以进行排序

function sortObjectKeysToLower(obj) {
  const lowerCaseKeys = Object.keys(obj).reduce((result, key) => {
    const lowercaseKey = key.toLowerCase();
    result[lowercaseKey] = obj[key];
    return result;
  }, {});

  const sortedKeys = Object.entries(lowerCaseKeys)
    .sort((a, b) => a[0].localeCompare(b[0]))
    .reduce((result, [key, value]) => {
      result[key] = value;
      return result;
    }, {});

  return sortedKeys;
}

// 示例用法
const obj = {
  Apple: 'red',
  banana: 'yellow',
  Cherry: 'red',
  Date: 'brown',
};

const sortedObj = sortObjectKeysToLower(obj);
console.log(sortedObj);