Gulp + Browserify - multi-file recipe (JSX, coffeescript, uglify & sourcemaps)

javascript.js

// Config that can be loaded externally, similar
// to [gulp-starter](https://github.com/greypants/gulp-starter)

var src  = './app/assets';
var dest = './public';
var config = {
  javascript: {
    src: src + '/javascript_app/**/*.{js,coffee}',
    rootFiles: [
      {
        src  : src + '/javascript_app/app.js',
        dest : 'app.js'
      },
      {
        src  : src + '/javascript_app/test.coffee',
        dest : 'coffee.js'
      }
    ],
    dest: dest + '/js'
  }
};

// Gulp + Browserify recipe
// ------------------------
// Includes react JSX, coffeescript, uglify & sourcemaps
// Supports multiple input & output files

var gulp       = require('gulp');
var sourcemaps = require('gulp-sourcemaps');
var browserify = require('browserify');
var coffeeify  = require('coffeeify');
var reactify   = require('reactify');
var source     = require('vinyl-source-stream');
var buffer     = require('vinyl-buffer');
var uglify     = require('gulp-uglify');

gulp.task('javascript', function (callback) {
  var files = config.javascript.rootFiles;
  
  files.forEach(function (file) {
    var b = browserify({
        entries: file.src, // Only need initial file, browserify finds the deps
        debug: true        // Enable sourcemaps
    });

    b.transform(coffeeify); // Convert Coffeescript
    b.transform(reactify);  // Convert JSX

    b.bundle()
      .pipe(source(file.dest))
      .pipe(buffer())

      .pipe(sourcemaps.init({loadMaps: true}))
        .pipe(uglify())
      .pipe(sourcemaps.write())

      .pipe(gulp.dest(config.javascript.dest));
  });

  callback();
});

doesn't work with watch, watch quits at the first compilation error