code: function buildNode(file, watch) {
    if (watch) {
      return gulp.watch(paths.src + file + '.js')
        .on('change', function(file) {
          $.util.log('Copying to lib...');
          gulp.src(file.path)
            .pipe($.plumber())
            .pipe($.babel())
            .pipe(gulp.dest(paths.dist));
        });
    } else {
      return gulp.src(paths.src + file + '.js')
        .pipe($.plumber())
        .pipe($.babel())
        .pipe(gulp.dest(paths.dist));
    }
  }
docs: /*
  Transpiles JS file for Node.