react-url-query/src/utils/subquery.js

A library for managing state through query parameters in the URL in React. Works well with or without Redux and React Router.

/**
 * Helper function to get only parts of a query. Specify
 * which parameters to include.
 */
export default function subquery(query, ...params) {
  if (!query) {
    return query;
  }

  return params.reduce((newQuery, param) => {
    newQuery[param] = query[param];
    return newQuery;
  }, {});
}