Why isn't the clean:dist task running?

Question

gulp.js

Hello, when executing the gulp build task, all parallel tasks are executed, but there is no clean:dist, what could be the matter?

gulp.task('clean:dist', function() {
  return del.sync(['dist/**/*', '!dist/images', '!dist/images/**/*']);
});

gulp.task('build', gulp.parallel('clean:dist', ['sass', 'useref', 'images', 'fonts']));

[23:34:28] The following tasks did not complete: build, clean:dist
[23:34:28] Did you forget to signal async completion?

Answer 1

gulp.task('clean:dist', function() {
  return del(['./dist/**', '!./dist/images/**']);
});

gulp.task('build', gulp.series('clean:dist', gulp.parallel('sass', 'useref', 'images', 'fonts')));

edited, my cant. missed gulp.beforeparallel