如何在javascript中将对象键点符号转换为对象树

function convertToTree(obj) {
  const result = {};

  for (const key in obj) {
    if (obj.hasOwnProperty(key)) {
      const keys = key.split('.');
      let current = result;

      for (let i = 0; i < keys.length; i++) {
        const k = keys[i];

        if (i === keys.length - 1) {
          current[k] = obj[key];
        } else {
          if (!current[k]) {
            current[k] = {};
          }
          current = current[k];
        }
      }
    }
  }

  return result;
}

// 示例用法
const input = {
  'user.name': 'Alice',
  'user.age': 30,
  'user.address.city': 'Wonderland',
  'user.address.zip': '12345'
};

const output = convertToTree(input);
console.log(output);