如何在Node.js中以JSON形式异步获取文件夹映射？

const fs = require('fs');

function getFolderMapping(folderPath, callback) {
  fs.readdir(folderPath, (err, files) => {
    if (err) {
      callback(err);
      return;
    }

    const folderMapping = {};

    files.forEach((file) => {
      const filePath = `${folderPath}/${file}`;

      fs.stat(filePath, (err, stats) => {
        if (err) {
          callback(err);
          return;
        }

        if (stats.isDirectory()) {
          getFolderMapping(filePath, (err, subFolderMapping) => {
            if (err) {
              callback(err);
              return;
            }

            folderMapping[file] = subFolderMapping;
          });
        } else {
          folderMapping[file] = filePath;
        }
      });
    });

    callback(null, folderMapping);
  });
}

// 使用示例
getFolderMapping('/path/to/folder', (err, folderMapping) => {
  if (err) {
    console.error(err);
    return;
  }

  console.log(JSON.stringify(folderMapping, null, 2));
});