Function addParamToUrl

src/url.js:224–230

(url, key, value, opt_addToFront)

 * @return {string}
 */
export function addParamToUrl(url, key, value, opt_addToFront) {
  return appendEncodedParamStringToUrl(
    url,
    urlEncodeKeyValue(key, value),
    opt_addToFront
  );
}

/**
 * Appends query string fields and values to a url. The `params` objects'