Utils for URLSearchParams

url-search-params-utils.js

function objToParams(obj) {
  const params = new URLSearchParams();
  for(let key in obj) {
    if(Array.isArray(obj[key])) {
      obj[key].forEach(item => params.append(key, item));
    } 
    else if(typeof obj[key] === 'object') {
      continue;
    }
    else {
      params.set(key, obj[key])
    }
  }
  return params;
}

function paramsToObj(searchParams) {
  let obj = {};
  for(let entry of searchParams.entries()) {
    obj[entry[0]] = entry[1];
  }
  return obj;
}