Function maybeReportErrorToViewer

src/error-reporting.js:415–437

(win, data)

 * @visibleForTesting
 */
export function maybeReportErrorToViewer(win, data) {
  const ampdocService = Services.ampdocServiceFor(win);
  if (!ampdocService.isSingleDoc()) {
    return Promise.resolve(false);
  }
  const ampdocSingle = ampdocService.getSingleDoc();
  const htmlElement = ampdocSingle.getRootNode().documentElement;
  const docOptedIn = htmlElement.hasAttribute('report-errors-to-viewer');
  if (!docOptedIn) {
    return Promise.resolve(false);
  }
  const viewer = Services.viewerForDoc(ampdocSingle);
  if (!viewer.hasCapability('errorReporter')) {
    return Promise.resolve(false);
  }
  return viewer.isTrustedViewer().then((viewerTrusted) => {
    if (!viewerTrusted) {
      return false;
    }
    viewer.sendMessage('error', errorReportingDataForViewer(data));
    return true;
  });
}

/**
 * Strips down the error reporting data to a minimal set