Tiny Cookie String Parser for Node

tiny-cookie.js

const pair = cookieString => {
  const o = new Object();
  const n = cookieString.split(";");
  const r = n.map(c => c.split("="));
  const c = r.map(c => {
    const key = c[0].trim();
    const val = c[1];
    return key === undefined || key === null || key === ""
      ? Object.assign(o, {})
      : Object.assign(o, { [key]: val });
  });
  return o;
};

const a = pair("yummy_cookie=choco; tasty_cookie=strawberry; =");

console.log(a);