Function requireRootSessionId

packages/runtime/src/stream-graph-coordinator.ts:1460–1466

(rootSessionId: string)

}

function requireRootSessionId(rootSessionId: string): string {
  const normalized = rootSessionId.trim();
  if (!normalized || normalized !== rootSessionId) {
    throw new Error('Agent graph root Session id must be a non-empty canonical identity');
  }
  return normalized;
}

function isMaterializedGraphClientEvent(
  type: AgentGraphSupervisorRuntimeEvent['event']['type'],