Gulp and browsersync (gulp --nobrowser)

var gulp = require('gulp'),
  cssmin = require('gulp-cssmin'),
  rename = require('gulp-rename'),
  uglify = require('gulp-uglify'),
  pump = require('pump'),
  concat = require('gulp-concat'),
  runSequence = require('run-sequence'),
  browserSync = require('browser-sync').create(),
  clear = require('rimraf'),
  gutil = require('gulp-util');

const arg = (argList => {
  let arg = {}, a, opt, thisOpt, curOpt;
  for (a = 0; a < argList.length; a++) {
    thisOpt = argList[a].trim();
    opt = thisOpt.replace(/^\-+/, '');

    if (opt === thisOpt) {
      // argument value
      if (curOpt) arg[curOpt] = opt;
      curOpt = null;
    }
    else {
      // argument name
      curOpt = opt;
      arg[curOpt] = true;
    }
  }
  return arg;
})(process.argv);

// Default
gulp.task('default', ['clear'], function (callback) {
  let tasks = ['cssmin', 'gulp', 'watch'];
  if (!arg.nobrowser) {
    tasks.push('browser-sync');
  }
  runSequence('uglify', tasks, 'watch', callback);
});

// Debug
gulp.task('debug', function (callback) {
  runSequence(
    ['browser-sync-debug', 'watch'],
    callback);
});

gulp.task('clear', function (cb) {
  clear('./dist/**/**', cb);


  console.log("Limpando a pasta dist");
});

// Browser Sync
gulp.task('browser-sync', function () {
  browserSync.init({
    port: 8000,
    host: '0.0.0.0',
    server: {
      baseDir: "./dist"
    },
    open: false
  });
});

gulp.task('browser-sync-debug', function () {
  browserSync.init({
    port: 8000,
    https: arg.https ? arg.https : false,
    ghostMode: !!arg.nogost,
    server: {
      baseDir: "./source"
    },
    open: false
  });
});


// MINIFY CSS (minificar CSS)
// importa o modulo 'cssmin' e cria uma função com o mesmo, para: minificar, renomear, concatenar tudo em um arquivo, e jogar no dist
//----------------------------------------------------------------------
gulp.task('cssmin', function () {
  gulp.src('source/assets/css/**/*.css')
    .pipe(cssmin())
    // .pipe(rename({suffix: '.min'}))
    .pipe(concat('styles.min.css'))
    .pipe(gulp.dest('dist/assets/css/'));

});

// Uglify
gulp.task('uglify', function (cb) {
  pump([
    gulp.src(['source/**/*.js']),
    uglify()
      .pipe(gulp.dest('./dist'))
  ],
    cb
  );
});

// Move files
gulp.task('gulp', function () {
  console.log("Estou movendo os arquivos para o dist :D ...");
  gulp.src("source/**/*")
    .pipe(gulp.dest('dist'));
});

// Watch
gulp.task('watch', function () {
  function reportChange(event) {
    console.log('Event type: ' + event.type);
    console.log('Event path: ' + event.path);
  }


  gulp.watch('source/assets/css/**/*.css', { interval: 2000 }, ['cssmin', 'gulp']).on('change', reportChange);
  gulp.watch('index.html', { interval: 2000 }, ['gulp']).on('change', reportChange);
  gulp.watch(['source/**/*.js', 'source/**/*.html'], { interval: 2000 }, ['gulp']).on('change', (process.env.BROWSER_SYNC === 'N' || arg.sync == false) ? gutil.noop : browserSync.reload, reportChange);
});

[16:42:58] Using gulpfile ~/Área de Trabalho/sistema-bilhetagem/sbe-web-backoffice/gulpfile.js
[16:42:58] Starting 'clear'...
Limpando a pasta dist
[16:42:59] Finished 'clear' after 1.56 s
[16:42:59] Starting 'default'...
[16:42:59] Starting 'uglify'...
[16:43:00] Finished 'uglify' after 1.03 s
[16:43:00] Starting 'cssmin'...
[16:43:00] Finished 'cssmin' after 1.44 ms
[16:43:00] Starting 'gulp'...
Estou movendo os arquivos para o dist :D ...
[16:43:00] Finished 'gulp' after 474 μs
[16:43:00] Starting 'watch'...
[16:43:01] Finished 'watch' after 852 ms
[16:43:01] Starting 'watch'...
[16:43:02] Finished 'watch' after 705 ms
[16:43:02] Finished 'default' after 2.59 s