I have the code ``` gulp.src(['*.js']) .pipe(gulpif(['*.js'], uglify())) .pipe(gulp.dest('dist')); ``` but no files will be uglified, if I change the code like this ``` gulp.src(['*.js']) .pipe(gulpif('*.js', uglify())) .pipe(gulp.dest('dist')); ``` it works , it seems gulpif does not support bracket syntax