Function reportErrorToServerOrViewer

src/error-reporting.js:383–399

(win, data)

 * @return {Promise<undefined>}
 */
export function reportErrorToServerOrViewer(win, data) {
  // Report the error to viewer if it has the capability. The data passed
  // to the viewer is exactly the same as the data passed to the server
  // below.

  if (data['pt'] && Math.random() < THROTTLE_STABLE_THRESHOLD) {
    return Promise.resolve();
  }

  return maybeReportErrorToViewer(win, data).then((reportedErrorToViewer) => {
    if (!reportedErrorToViewer) {
      const xhr = new XMLHttpRequest();
      xhr.open('POST', chooseReportingUrl_(), true);
      xhr.send(JSON.stringify(data));
    }
  });
}

/**
 * Passes the given error data to the viewer if the following criteria is met: