Function withMonitor

packages/core/src/exports.ts:214–253

(
  monitorSlug: CheckIn['monitorSlug'],
  callback: () => T,
  upsertMonitorConfig?: MonitorConfig,
)

 * to create a monitor automatically when sending a check in.
 */
export function withMonitor<T>(
  monitorSlug: CheckIn['monitorSlug'],
  callback: () => T,
  upsertMonitorConfig?: MonitorConfig,
): T {
  function runCallback(): T {
    const checkInId = captureCheckIn({ monitorSlug, status: 'in_progress' }, upsertMonitorConfig);
    const now = timestampInSeconds();

    function finishCheckIn(status: FinishedCheckIn['status']): void {
      captureCheckIn({ monitorSlug, status, checkInId, duration: timestampInSeconds() - now });
    }
    // Default behavior without isolateTrace
    let maybePromiseResult: T;
    try {
      maybePromiseResult = callback();
    } catch (e) {
      finishCheckIn('error');
      throw e;
    }

    if (isThenable(maybePromiseResult)) {
      return maybePromiseResult.then(
        r => {
          finishCheckIn('ok');
          return r;
        },
        e => {
          finishCheckIn('error');
          throw e;
        },
      ) as T;
    }
    finishCheckIn('ok');

    return maybePromiseResult;
  }

  return withIsolationScope(() => (upsertMonitorConfig?.isolateTrace ? startNewTrace(runCallback) : runCallback()));
}

/**
 * Call `flush()` on the current client, if there is one. See {@link Client.flush}.