export default (name: string) => {
  const query = window.location.search.substring(1);
  const vars = query.split('&');
  for (let i = 0; i < vars.length; i++) {
    const pair = vars[i].split('=');
    if (decodeURIComponent(pair[0]) === name) {
      return decodeURIComponent(pair[1]);
    }
  }
  return undefined;
}