watch example please? about webpack-cluster HOT 8 CLOSED

gulp.task('build:webpack', function(callback) {
  var webpack = new webpackGlob(compilerOptions, configOptions)
  webpack.run(configFilename)
});

gulp.task('watch:webpack', ['build:webpack'], function(callback) {
  var webpack = new webpackGlob(compilerOptions, configOptions)
  gulp.watch(webpackWatch).on('change', function(event) {
    if (event.type === 'changed') {
      webpack.run(configFilename)
    }
  })
});

gulp.task('build:webpack', function(callback) {
  var webpack = new webpackGlob(compilerOptions, configOptions)
  webpack.run(configFilename).then(function() {
    callback()
  }).catch(function(err) {
    callback(new gutil.PluginError('webpack', err))
  })
});

gulp.task('watch:webpack', ['build:webpack'], function(callback) {
  var webpack = new webpackGlob(compilerOptions, configOptions)
  webpack.watch(configFilename, './public/angular/**/*', '!./public/angular/**/*.html').then(function() {
    callback()
  }).catch(function(err) {
    callback(new gutil.PluginError('webpack', err))
  })
});