react() {
    gulp.watch(['./src/core/**/*.js'], gulp.series('core-js', 'core-components'));
    gulp.watch('./src/core/**/*.less', gulp.series('core-styles', 'core-components'));
    gulp.watch(['./src/react/**/*.js', './src/react/**/*.jsx'], gulp.series('build-react'));
  }
/*.d.ts'], gulp.series('core-typings'));
    gulp.watch('./src/*