for browserify (reactify)

Gulpfile.js

var browserify = require('browserify'),
    gulp = require('gulp'),
    source = require('vinyl-source-stream'),
    brfs = require('brfs'), // -> if use
    babelify = require('babelify'), // -> for es6, react
    uglify = require('gulp-uglify');

var liveServer = require('live-server');

gulp.task('browserify', function() {

  // neither es6 nor react
  var b = browserify({
    insertGlobals: true,
    entries: ['/PATH/TO/ENTRYPOINT.js'],
    transform: [brfs] // if use
  });

  // es6 or react
  var b = browserify({
    entries: ['/PATH/TO/ENTRYPOINT.jsx'],
    transform: [babelify],
    debug: false,
    extensions: ['.jsx']
  });

  return b.bundle().pipe(source('OUTPUT.js')).pipe(gulp.dest('/PATH/TO/OUTPUT'));
});

gulp.task('watch',function(){
  return gulp.watch('/PATH/TO/SRC/**/*.js',['browserify']);
});

gulp.task('build',['browserify'],function(){
  return gulp.src('/PATH/TO/OUTPUT.js')
    .pipe(uglify())
    .pipe(gulp.dest('/PATH/TO/UGLIFIED'));
});

gulp.task('server',['browserify'],function(){
  return liveServer.start({
    port: 8080,
    root: "/PATH/TO/PUBLIC"
  });
});

// gulp.task('default',['browserify']);
gulp.task('default',['server','watch']);