export const serialize = (obj: any) => {
  const str: any[] = []
  for (const p in obj) {
    if (obj.hasOwnProperty(p)) {
      if (obj[p] instanceof Array) {
        for (let i = 0, n = obj[p].length; i < n; i++) {
          str.push(encodeURIComponent(p) + '=' + encodeURIComponent(obj[p][i]))
        }
      } else {
        str.push(encodeURIComponent(p) + '=' + encodeURIComponent(obj[p]))
      }
    }
  }
  return str.join('&')
}