mkdir recursion in node

gistfile1.js

var path = require('path');
var fs = require('fs');

var mkdirs = function(dir, mode, callback) {
  fs.exists(dir, function(exists) {
    if(exists) {
      callback(dir);
    } else {
      mkdirs(path.dirname(dir), mode, function() {
        fs.mkdir(dir, mode, callback);
      });
    }
  });
};

mkdirs('/abc/def', 000, function(dir){})