@atlaskit/global-search/dist/esm/util/url-utils.js

A cross-product search component (batteries included)

export var addQueryParam = function addQueryParam(url, queryName, queryValue) {
  if (!url || !queryName) {
    return url;
  }

  var urlSplit = url.split('?');
  var queryString = urlSplit.length === 2 ? urlSplit[1] : null;
  var urlWithoutQuery = urlSplit.length > 0 ? urlSplit[0] : '';
  var encodedQueryName = encodeURIComponent(queryName);
  var newQueryItem = "".concat(encodedQueryName, "=").concat(encodeURIComponent(queryValue || '')); // If url has no existing query strings

  if (!queryString) {
    return "".concat(url, "?").concat(newQueryItem);
  }

  var existingQueries = queryString.split('&');
  var newQueryString = existingQueries.filter(function (query) {
    // If the query already exists we will replace it with the new one so we filter it out here
    return !query.startsWith("".concat(encodedQueryName, "="));
  }).concat(newQueryItem).join('&');
  return "".concat(urlWithoutQuery, "?").concat(newQueryString);
};