browserify.js

var fs = require('fs');
var path = require('path');
var source = require('vinyl-source-stream');
var gulp = require('gulp');
var gutil = require('gulp-util');
var browserify = require('browserify');
var watchify = require('watchify');
var glob = require('glob');
var source = require('vinyl-source-stream');
var es = require('event-stream');
var buffer = require('vinyl-buffer');
var config = require('../config').browserify;
var lrload = require('livereactload');
var watch;

gulp.task('browserify-nowatch', function(done) {
  watch = false;
  return browserifyWork(done);
});

gulp.task('browserify', function(done) {
  watch = true;
  return browserifyWork(done);
});

function browserifyWork(done) {

  function bundle(bundler, entry) {
    return bundler.bundle()
      .on('error', function(err) {
        gutil.log(gutil.colors.red('\n**********\nBROWSERIFY ERROR:'));
        gutil.log(err);
        gutil.log(gutil.colors.red('\n**********'));
        this.emit('end');
        //process.exit(1);
      })
      .pipe(source(path.basename(entry)))
      .pipe(gulp.dest(config.dest));
  }

  glob(config.src, function(err, files) {
    if (err) {
      done(err);
    }
    var tasks = files.map(function(entry) {
      var b = browserify({
        cache: {},
        packageCache: {},
        entries: [entry],
        transform: config.settings.transform,
        plugin: [ lrload ],
        debug: config.debug,
        extensions: config.extensions
      });

      if (watch) {
        var w = watchify(b);
        w.on('log', gutil.log);
        w.on('update', function() {
          gutil.log('Bundler update event fired for entry: ' + entry);
          bundle(w, entry);
        });
      }

      return bundle(b, entry);
    });

    es.merge(tasks).on('end', done);
  });
}