build - default - fin

// html task: move index.html (entry point for the browser) to ./build/
gulp.task('html', function () {
  return gulp
    .src('src/index.html')
    .on('error', interceptErrors)
    .pipe(gulp.dest('./build/'));
});

// default task (this run when you do 'gulp' in the command line)
// run html and browserify to put all the html+JS into ./build/, then serve the assets
// in ./build/ to the browser at localhost:4000.
gulp.task('default', ['html', 'browserify'], function () {
  // serve assets to localhost:4000
  browserSync.init(['./build/**/**.**'], {
    server: './build',
    port: 4000,
    notify: false,
    ui: {
      port: 4001,
    },
  });

  // watch for changes and recompile changed files with html, view, browserify tasks respectively.
  gulp.watch('src/index.html', ['html']);
  gulp.watch(viewFiles, ['views']);
  gulp.watch(jsFiles, ['browserify']);
});