code: function watchTask() {
      gulp.watch(config.watchers.static, copyStaticFiles);
      gulp.watch(config.watchers.css, gulp.series(lintCSS, compileSass));
      gulp.watch(config.watchers.js, gulp.series(lintJS, concatJS, copyJS));
      gulp.watch(config.watchers.drizzle, drizzleTask);
  }
docs: Watch files for changes & rebuild.