import type { SessionStateTransition } from "#execution/session/state-cursor.js";
import { type DurableSessionState } from "#execution/durable-session-store.js";
/** Cooperatively cancels every task currently indexed by a durable session. */
export declare function cancelAllIndexedSessionTasksStep(input: {
    readonly serializedContext?: Record<string, unknown>;
    readonly sessionState: DurableSessionState;
}): Promise<SessionStateTransition>;