How to use the gulp.registry function in gulp

// The following directory will be scanned for Bower packages, and
        // compiled into vendor-generated.js.
        bower: path.resolve(source, "assets/js/vendor"),
        // The following paths will be run through browserify/babelify.
        js: path.resolve(source, "assets/js/*.js"),
        // The following paths will be run through SASS.
        scss: path.resolve(source, "assets/scss/**/*.scss")
    },
    // Show verbose output in tasks.
    verbose: false,
    // Toggle minification of CSS and JS.
    minify: true
};

gulp.registry(new PatternLabRegistry(defaults, argv));
gulp.registry(new NPMRegistry(defaults, argv));
gulp.registry(new ArtifactsRegistry(defaults, argv));

// @todo: Do we need svg2twig?
// @todo: Do we need the svg-sprite task?


gulp.task("default", gulp.series("patternlab:watch"));
gulp.task("prod", gulp.series("patternlab:build"));

const gulp = require('gulp');
const HubRegistry = require('gulp-hub');
const browserSync = require('browser-sync');

const conf = require('./conf/gulp.conf');

// Load some files into the registry
const hub = new HubRegistry([conf.path.tasks('*.js')]);

// Tell gulp to use the tasks just loaded
gulp.registry(hub);

gulp.task('build', gulp.series('partials', gulp.parallel('other', 'webpack:dist')));
gulp.task('test', gulp.series('karma:single-run'));
gulp.task('test:auto', gulp.series('karma:auto-run'));
gulp.task('serve', gulp.series('webpack:watch', 'watch', 'browsersync'));
gulp.task('serve:dist', gulp.series('default', 'browsersync:dist'));
gulp.task('default', gulp.series('clean', 'build'));
gulp.task('watch', watch);

function reloadBrowserSync(cb) {
  browserSync.reload();
  cb();
}

function watch(done) {
  gulp.watch(conf.path.src('app/**/*.html'), reloadBrowserSync);

* distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
const gulp = require('gulp');
const HubRegistry = require('gulp-hub');
const browserSync = require('browser-sync');

const conf = require('./conf/gulp.conf');

// Load some files into the registry
const hub = new HubRegistry([conf.path.tasks('*.js')]);

// Tell gulp to use the tasks just loaded
gulp.registry(hub);

gulp.task('build', gulp.series(gulp.parallel('other', 'webpack:dist')));
gulp.task('test', gulp.series('karma:single-run'));
gulp.task('test:auto', gulp.series('karma:auto-run'));
gulp.task('serve', gulp.series('webpack:watch', 'watch', 'browsersync'));
gulp.task('serve:demo', gulp.series('webpack:watch', 'watch', 'browsersync:demo'));
gulp.task('serve:nightly', gulp.series('webpack:watch', 'watch', 'browsersync:nightly'));
gulp.task('serve:dist', gulp.series('default'));
gulp.task('default', gulp.series('clean', 'build'));
gulp.task('watch', watch);
gulp.task('buildNoReg', gulp.series('serve:dist', 'webdriver-update'));

function reloadBrowserSync(cb) {
  browserSync.reload();
  cb();
}

const gulp = require('gulp');
const HubRegistry = require('gulp-hub');
const browserSync = require('browser-sync');

const conf = require('./conf/gulp.conf');

// Load some files into the registry
const hub = new HubRegistry([conf.path.tasks('*.js')]);

// Tell gulp to use the tasks just loaded
gulp.registry(hub);

gulp.task('build', gulp.series(gulp.parallel('other', 'webpack:dist')));
gulp.task('test', gulp.series('karma:single-run'));
gulp.task('test:auto', gulp.series('karma:auto-run'));
gulp.task('serve', gulp.series('webpack:watch', 'watch', 'browsersync'));
gulp.task('serve:dist', gulp.series('default', 'browsersync:dist'));
gulp.task('default', gulp.series('clean', 'build'));
gulp.task('watch', watch);

function reloadBrowserSync(cb) {
  browserSync.reload();
  cb();
}

function watch(done) {
  gulp.watch(conf.path.src('app/**/*.html'), reloadBrowserSync);

const path = require('path');
const fs = require('fs');
const gulp = require('gulp');
const undertakerForwardReference = require('undertaker-forward-reference');

// NOTE: Allow tasks to be referenced in any order
gulp.registry(undertakerForwardReference());

// NOTE: Load all tasks
const tasksDir = path.join(__dirname, 'gulp/tasks');
fs.readdirSync(tasksDir).forEach(file => require(path.join(tasksDir, file)));

'./tasks/scripts.js',
    './tasks/sounds.js',
    './tasks/styles.js',
    './tasks/version.js',
    './tasks/chromereload.js' //諸々->chromereload->build->pack,defaultの順
    // './tasks/build.js'
    // './tasks/pack.js'
    // './tasks/default.js'
]);
var buildTasks = new hub([
    './tasks/build.js'
    // './tasks/pack.js'
    // './tasks/default.js'
]);
// gulp.registry(tasks);
gulp.registry(buildTasks);
// import pack from './tasks/pack';

// export { build, pack };
// exports.build = build;
// gulp.task('build', build);

// pack
import { colors, log } from 'gulp-util';
import zip from 'gulp-zip';
import packageDetails from './package.json';
import args from './tasks/lib/args';
// import hub from 'gulp-hub';

function getPackFileType() {
    switch (args.vendor) {
        case 'firefox':

const gulp = require('gulp');
const HubRegistry = require('gulp-hub');
const browserSync = require('browser-sync');

const conf = require('./conf/gulp.conf');

// Load some files into the registry
const hub = new HubRegistry([conf.path.tasks('*.js')]);

// Tell gulp to use the tasks just loaded
gulp.registry(hub);

gulp.task('build', gulp.series(gulp.parallel('other', 'webpack:dist')));
gulp.task('build:demo', gulp.series(gulp.parallel('other', 'webpack:dist')));
gulp.task('test', gulp.series('karma:single-run'));
gulp.task('test:auto', gulp.series('karma:auto-run'));
gulp.task('serve', gulp.series('webpack:watch', 'watch', 'browsersync'));
gulp.task('serve:dist', gulp.series('default', 'browsersync:dist'));
gulp.task('default', gulp.series('clean', 'build'));
gulp.task('watch', watch);

function reloadBrowserSync(cb) {
  browserSync.reload();
  cb();
}

function watch(done) {

}
    }
  },
  build: ['clean', 'make'],
  serve: {
    browserSync: function () {
      browserSync.init({
        server: this.config.dest.path
      });
    },
    watch: ['markups', 'scripts', 'styles', 'images', 'assets']
  },
  default: 'build'
});

gulp.registry(meal);

env: env,
  browser: browserSync.create()
}


/**
 * All the task need regist to Gulp.
 */
const styles    = new Stylestaker({ instance: instance })
const templates = new Templatestaker({ instance: instance })
const images    = new Imagestaker({ instance: instance })
const dlls      = new Dllstaker({ instance: instance })
const fonts     = new Fontstaker({ instance: instance })

gulp.registry(styles)
gulp.registry(templates)
gulp.registry(images)
gulp.registry(dlls)
gulp.registry(fonts)


/**
 * Stop server. Used to restart server or tasks.
 *
 * @private
 */
function stopServer(done) {
  instance.browser.exit()
  done()
}

],
  keywords: [
    '',
    ''
  ],
  cli: [
    '',
    ''
  ]
};

var recipes, meal;

recipes = prepare(COURSES);
meal = chef(recipes, { exposeWithPrefix: 'always' });
gulp.registry(meal);