使用reduce和递归从路径数组到对象

const paths = ['a.b.c', 'a.d', 'e.f'];

const buildObjectFromPaths = (paths, obj = {}) => {
  paths.forEach(path => {
    const keys = path.split('.');
    let current = obj;
    
    keys.forEach((key, index) => {
      if (index === keys.length - 1) {
        current[key] = undefined; // 或者你可以设置一个默认值
      } else {
        current[key] = current[key] || {};
        current = current[key];
      }
    });
  });
  
  return obj;
};

const result = buildObjectFromPaths(paths);
console.log(result);
// 输出: { a: { b: { c: undefined }, d: undefined }, e: { f: undefined } }

const mergeObjectFromPaths = (paths, obj = {}) => {
  paths.forEach(path => {
    const keys = path.split('.');
    let current = obj;
    
    keys.forEach((key, index) => {
      if (index === keys.length - 1) {
        // 如果路径已存在，可以选择合并或跳过
        if (current.hasOwnProperty(key)) {
          console.warn(`Path ${path} already exists. Skipping.`);
        } else {
          current[key] = undefined; // 或者你可以设置一个默认值
        }
      } else {
        current[key] = current[key] || {};
        current = current[key];
      }
    });
  });
  
  return obj;
};

const resultWithCheck = mergeObjectFromPaths(paths);
console.log(resultWithCheck);