export function createQueryString(params: { [code: string]: number|string|string[] }) {
  return Object.keys(params).reduce((result, key) => {
    const param = params[key]

    if (Array.isArray(param)) {
      return (result + param.map((p) => `${key}=${encodeURIComponent(String(p))}&`).join(''))
    }

    return `${result}${key}=${encodeURIComponent(String(param))}&`
  }, '?').slice(0, -1)
}