function serialize(data) {
  if (isOlderIE) {
    return JSON.stringify(data);
  }
  return data;
}
/**
 * Serialize the data in older versions of IE.
 * See
 * - https://developer.mozilla.org/en-US/docs/Web/API/Window/postMessage
 * - https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Structured_clone_algorithm
 * @param {Object} data
 * @returns {Object|string}
 */
Serialize the data in older versions of IE.
Serialize the data in older versions of IE .
function serialize(data) {
  if (isOlderIE) {
    return JSON.stringify(data);
  }
  return data;
}
function serialize ( data ) { if ( isOlderIE ) { return JSON . stringify ( data ) ; } return data ; }
Serialize the data in older versions of IE.
Serialize the data in older versions of IE .