import type { A2AStreamEvent } from '../../types/a2a/index.js';
import type { SessionEvent } from '../../types/session/events.js';
/**
 * One session event as an A2A stream event, or `null` for the events a peer
 * modelling a task lifecycle has no use for.
 *
 * `taskId` is the event's turn. `contextId` is the session as the peer knows
 * it: pass the peer's own context id when the session was reached through
 * one; absent, the event's `sessionId` is used.
 */
export declare function mapTurnToA2AEvent(event: SessionEvent, contextId?: string): A2AStreamEvent | null;
/** @deprecated Use mapTurnToA2AEvent */
export declare const mapSessionToA2AEvent: typeof mapTurnToA2AEvent;
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