simple css parser

css-parser.js

const fs = require('fs');

function notEmpty(input){
  return !!input.trim();
};

function kv(prop){
  var obj = {};
  prop.split(/;/g).filter(notEmpty).forEach(function(item){
    var p = item.split(':');
    obj[ String(p[0]).trim() ] = String(p[1]).trim()
  })
  return obj;
}

const content = fs.readFileSync('a.css', 'utf8')
const rules   = content.replace(/\s/g, '').replace(/\}/g, '}\n').split(/\n/g).filter(notEmpty).map(function(rule){
  var tokens = rule.match(/^(.+)\{(.+)\}$/);
  return {
    selector: tokens[1],
    content : tokens[2],
    props   : kv(tokens[2])
  };
});

console.log(rules);
/*
➜  css-parser node .
[ { selector: '.selector',
    content: 'color:#fff;font-size:14px;',
    props: { color: '#fff', 'font-size': '14px' } },
  { selector: 'html',
    content: 'background:red;',
    props: { background: 'red' } },
  { selector: 'a',
    content: 'text-align:center;',
    props: { 'text-align': 'center' } } ]
*/