Cookie parser in ~ 3 lines

cookies.js

const input = 'name=value; noname; novalue=; multieq=foo=bar';

const jar = input.split(';').reduceRight((jar, cookie) => {
  const [_, name = '', value = ''] = cookie.trim().match(/^(?:([^=]+)=)?(?:(.*)|$)/);
  return Object.assign({ [name]: value, }, jar);
}, {});

console.log(JSON.stringify(jar, null, 2));
// {
//   "name": "value",
//   "": "noname",
//   "novalue": "",
//   "multieq": "foo=bar"
// }