[Build] Slow Performance of Gulp-Concat-CSS

[jenil]

Hey,

I was customizing Semantic and started getting a bit restless coz of the amount of time the gulp build command takes. After doing a bit of debugging I found that the gulp-concat-css plugin is what takes a lot of time (in my case around 15-20s on a MBP Retina running Yosemite). When I used the gulp-concat plugin instead the time it took was just about 700-800ms. Any specific reason for using gulp-concat-css?

[jlukic]

The only feature we need from gulp-concat-css that is not in gulp-concat that our project requires is moving @import rules to the top of files.

This makes sure google font imports are always at the top of concatenated files.
https://github.com/mariocasciaro/gulp-concat-css/blob/master/index.js#L51

Any suggestions on another way to accomplish this are most welcome.

I usually build from component css in staging environments, so I can see exactly where CSS/JS is breaking. But I understand that can't always be the case.