Utility functions for parsing a query parameter string and stringify-ing a query parameter object

query-string.js

/**
 * Stringify an object containing query parameters to be used in a request
 *
 * @param {object} paramObj An object containing query paramaters
 * @returns {string} A string in the format of a query param
 */
export const stringifyQuery = (paramObj) =>
  new URLSearchParams(paramObj).toString();

/**
 * Parse a string in query string format into an object
 *
 * @param {string} [paramStr=window.location.search] A string in query parameter format to be parsed. — Default: `window.location.search`
 * @returns {object} An object of query parameters
 */
export const parseQuery = (paramStr = window.location.search) =>
  [...new URLSearchParams(paramStr).entries()].reduce(
    (paramObj, [key, val]) => ({
      ...paramObj,
      [key]: val,
    }),
    {}
  );