serialize an object into a query string

serialize.js

const serialize = (params) => {
  let whitelist = ['category', 'order', 'search', 'number']

  return (!params) ? '' : '?' + Object.keys(params)
  .filter(p => whitelist.includes(p))
  .map(p => `${p}=${params[p]}&`)
  .reduce((p, c) => p + c)
  .slice(0, -1)
}