nodejs - asynchronously and recursively create nested directories (like mkdir -p) in under 50 lines of code

gistfile1.txt

/*jslint bitwise: true, indent: 2, nomen: true, regexp: true, stupid: true*/
(function () {
  'use strict';

  exports.requireFs = require('fs');
  exports.requirePath = require('path');

  function _fsMkdirP(dirname, callback) {
    exports.requireFs.mkdir(dirname, function (err) {
      switch (err && err.code) {
      case 'ENOENT':
        _fsMkdirP(exports.requirePath.dirname(dirname), function (err) {
          if (err) {
            callback(err);
            return;
          }
          exports.requireFs.mkdir(dirname, callback);
        });
        return;
      case 'EEXIST':
        callback();
        return;
      default:
        callback(err);
      }
    });
  }

  exports.fsMkdirP = function (dirname, callback) {
    _fsMkdirP(dirname, callback || function () {});
  };


  //// test
  exports.fsMkdirP('/tmp/a/b/c/d/e', function (err) {
    if (err) {
      console.error(err.stack);
      return;
    }
    console.log('finished asynchronously creating directory /tmp/a/b/c/d/e');
  });
}());