message: Remove direct manipulation of the arguments object
  Fixes
diff: @@ -20,10 +20,7 @@ function isWebpackDevServer() {
  return process.argv[1] && !! (/webpack-dev-server/.exec(process.argv[1]));
  }
  -function root(args) {
  - args = Array.prototype.slice.call(arguments, 0);
  - return path.join.apply(path, [ROOT].concat(args));
  -}
  +var root = path.join.bind(path, ROOT);
  exports.hasProcessFlag = hasProcessFlag;
  exports.hasNpmFlag = hasNpmFlag;
  