compiling is very slow after modifying the code, but it still doesn"t work after finding a lot of methods. Forget to point it out.

var browserify = require ("browserify");
var watchify = require (" watchify");
/ / var bundleLogger = require (". / util/bundleLogger");
var gulp = require ("gulp");
/ / var handleErrors = require (".. / util/handleErrors");
var source = require ("vinyl-source-stream");
var config = require (". / config"). Browserify;
var buffer = require ("vinyl-buffer");
var es3ify = require ("gulp-es3ify");

gulp.task ("browserify", [" bableConvert"], function (callback) {

var bundleQueue = config.bundleConfigs.length;

var browserifyThis = function (bundleConfig) {

var bundler = browserify({
  // Required watchify args
  cache: {}, packageCache: {}, fullPaths: false,
  // Specify the entry point of your app
  entries: bundleConfig.entries,
  // Add file extentions to make optional in your requires
  extensions: config.extensions,
  // Enable source maps!
  debug: config.debug
});

var bundle = function() {
  // Log when bundling starts
  // bundleLogger.start(bundleConfig.outputName);

  return bundler
    .bundle()
    // Report compile errors
    // .on("error", handleErrors)
    // Use vinyl-source-stream to make the
    // stream gulp compatible. Specifiy the
    // desired output filename here.
    .pipe(source(bundleConfig.outputName))
    
    .pipe(buffer())
    .pipe(es3ify())
    // Specify the output destination
    .pipe(gulp.dest(bundleConfig.dest))
    .on("end", reportFinished);
};

if(global.isWatching) {
  // Wrap with watchify and rebundle on changes
  bundler = watchify(bundler);
  // Rebundle on update
  bundler.on("update", bundle);
}

var reportFinished = function() {
  // Log when bundling completes
  // bundleLogger.end(bundleConfig.outputName);

  if(bundleQueue) {
    bundleQueue--;
    if(bundleQueue === 0) {
      // If queue is empty, tell gulp the task is complete.
      // https://github.com/gulpjs/gulp/blob/master/docs/API.md-sharpaccept-a-callback
      callback();
    }
  }
};

return bundle();

};

/ / Start bundling with Browserify for each bundleConfig specified
config.bundleConfigs.forEach (browserifyThis);
});