function getUberMetrics(auditResults) {
  const metricsAudit = auditResults.metrics;
  if (!metricsAudit || !metricsAudit.details || !('items' in metricsAudit.details)) return;

  return metricsAudit.details.items[0];
}
@param {LH.Result['audits']} auditResults
@return {LH.Artifacts.TimingSummary|undefined}