scrape-css.js

var listSelectors = require('list-selectors');
var fs = require('fs')

module.exports = function(elmsource) {

	function makeLine(prefixedName) {
		const name = prefixedName.substr(1)
		return `${name} = "${name}"`
	}

	const source = 'src/style.scss'
	this.addDependency(source)

	listSelectors(source, {include: ['ids', 'classes']},
	function(res){
		const assignments =
			res.classes.concat(res.ids).map(makeLine).join('\n')

		fs.writeFile(
			'src/Sty.elm',
			'module Sty exposing (..)\n' + assignments
		)

	})

	return elmsource
}