SUS parses your css source and generates two new CSS sources from it – a base source and a sprites source.
The base source has all your original styles minus all background image defintions.
The sprites source has all your background image defintions, but converted to data-uris
install sus with npm install sus -g
you can then run sus from your terminal
$ sus path/to/css/app.css
This will generate two files in place:
css
├── app-base.css
└── pay-sprites.css
Alternatively you can pass an option --out to specify which location the generated styles are placed:
$ sus path/to/css/app.css --out out/css/
Sus accepts a string of css source and an options object. Use the options object to specify the location that your css is referencing images from. Alternatively pass a tranformer method to the base object to return fully resolved image paths.
var sus = require('sus')
sus(data, {
base: '/foo/bar'
}).parse(function (err, parsed) {
parsed.base() // base css styles
parsed.sprites() // base css styles
})