update query string parameters without page refresh in javascript

index.js

function updateQueryStringParam(key, value) {
    let baseUrl = [location.protocol, '//', location.host, location.pathname].join(''),
      urlQueryString = document.location.search,
      newParam = key + '=' + value,
      params = '?' + newParam;

    // If the "search" string exists, then build params from it
    if (urlQueryString) {
        let updateRegex = new RegExp('([\?&])' + key + '[^&]*');
        let removeRegex = new RegExp('([\?&])' + key + '=[^&;]+[&;]?');

        if (typeof value == 'undefined' || value == null || value == '') { // Remove param if value is empty
            params = urlQueryString.replace(removeRegex, "$1");
            params = params.replace(/[&;]$/, "");

        } else if (urlQueryString.match(updateRegex) !== null) { // If param exists already, update it
            params = urlQueryString.replace(updateRegex, "$1" + newParam);

        } else { // Otherwise, add it to end of query string
            params = urlQueryString + '&' + newParam;
        }
    }

    // no parameter was set so we don't need the question mark
    params = params == '?' ? '' : params;

    window.history.replaceState({}, "", baseUrl + params);
}