/**
 * Session Start Request.
 *
 * Request to load memory context at the start of a session.
 */
import type { IRequest } from '../IMediator';
import type { ISessionStartResult } from '../../interfaces';
import type { SessionTrigger, ISOTimestamp } from '../../../domain';
/**
 * Request to start a session and load memory context.
 */
export declare class SessionStartRequest implements IRequest<ISessionStartResult> {
    /** What triggered the session start */
    readonly trigger: SessionTrigger;
    /** When the session started */
    readonly timestamp: ISOTimestamp;
    /** Optional session identifier */
    readonly sessionId?: string | undefined;
    readonly __responseType?: ISessionStartResult;
    constructor(
    /** What triggered the session start */
    trigger: SessionTrigger, 
    /** When the session started */
    timestamp: ISOTimestamp, 
    /** Optional session identifier */
    sessionId?: string | undefined);
    /**
     * Create from a session start event.
     */
    static fromEvent(event: {
        trigger: SessionTrigger;
        timestamp: ISOTimestamp;
        sessionId?: string;
    }): SessionStartRequest;
}
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