Gulp file for react build

gulpfile.js

var gulp = require('gulp');
var gutil = require('gulp-util');
var source = require('vinyl-source-stream');
var buffer = require('vinyl-buffer');
var browserify = require('browserify');


var bundler = browserify('./index.js');
bundler.transform('babelify', {presets: ["es2015", "react"]})


gulp.task('browserify', bundle);

function bundle() {
  return bundler.bundle()
  // log errors if they happen
  .on('error', gutil.log.bind(gutil, 'Browserify Error'))
  .pipe(source('dist.js'))
  .pipe(buffer())
  // .pipe(uglify())
  .pipe(gulp.dest('./dist'))

}