如何通过路径数组来获取缺失的目录？

const fs = require('fs');

function getMissingDirectories(pathArray) {
  // 按照层级顺序排序路径数组
  pathArray.sort();

  const missingDirectories = [];

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

    // 检查目录是否存在
    if (!fs.existsSync(path)) {
      missingDirectories.push(path);

      // 检查父级目录是否存在
      let parentPath = path;
      while (parentPath !== '') {
        parentPath = parentPath.substring(0, parentPath.lastIndexOf('/'));
        if (!fs.existsSync(parentPath)) {
          missingDirectories.push(parentPath);
        }
      }
    }
  }

  return missingDirectories;
}

// 示例路径数组
const pathArray = [
  '/root',
  '/root/dir1',
  '/root/dir1/subdir1',
  '/root/dir2',
  '/root/dir2/subdir2'
];

const missingDirs = getMissingDirectories(pathArray);
console.log(missingDirs);