'use strict';
  var os = require('os');
  
  function homedir() {
  	var env = process.env;
  	var home = env.HOME;
  	var user = env.LOGNAME || env.USER || env.LNAME || env.USERNAME;
  
  	if (process.platform === 'win32') {
  		return env.USERPROFILE || env.HOMEDRIVE + env.HOMEPATH || home || null;
  	}
  
  	if (process.platform === 'darwin') {
  		return home || (user ? '/Users/' + user : null);
  	}
  
  	if (process.platform === 'linux') {
  		return home || (process.getuid() === 0 ? '/root' : (user ? '/home/' + user : null));
  	}
  
  	return home || null;
  }
  
  module.exports = typeof os.homedir === 'function' ? os.homedir : homedir;