CSS filtering in gulpfile doesn't work

[itsjustbrian]

The source splitting,

function splitSource() {
  return project.sources().pipe(project.splitHtml());
}

as I understand it, is supposed to create temporary .js and .css files from inline <script> and <style> tags in the source html.

Processing such as .pipe(gulpif('**/*.js', uglify())) works as expected,
but .pipe(gulpif('**/*.css', cleanCSS())) does not.

Trying to lint css this way also does not work. Any help would be appreciated!

[robdodson]

Yeah this is a polymer-build bug :P

https://github.com/Polymer/polymer-build/issues/32