Opal is a robust, elegant, feature-rich CSS pre-processor for Node.js and the browser, built using PostCSS.
npm install opalcss --save
var opal = require('opalcss')
opal.process('string of opal', options).then(function (result) {
result.css
//=> Compiled CSS
})
postcss([ require('opalcss')({ /* options */ }) ])
echo "TODO: Implement a CLI"
MIT