Do I Need Temporal to Survive a Crash?

async function foldStoredState(binding: RunStorageBinding, runId: string) {
  const stream = { namespace: binding.record.namespace, streamId: runId };
  const scope = { namespace: binding.record.namespace, runId };
  let eventCount = 0;
  let artifactBytes = 0;
  let lastArtifactDigest: string | null = null;

  for await (const event of binding.eventStore.read(stream)) {
    if (
      event.type !== 'example:artifact-recorded'
      || !isJsonObject(event.payload)
    ) {
      throw new Error(`Unexpected stored event ${event.type}.`);
    }
    const reference = validateArtifactReference(event.payload.artifact);
    const bytes = await binding.artifactStore.read(scope, reference);
    eventCount += 1;
    artifactBytes += bytes.byteLength;
    lastArtifactDigest = reference.digest;
  }

  return { eventCount, artifactBytes, lastArtifactDigest };
}