import type { ConversationEvent, Message } from '../types/schemas/chat/conversations.js';
export declare function getConversationForkSource(event: ConversationEvent): {
    sourceConversationId: string;
    sourceTitle: string;
    copiedMessageId: string;
} | null;
export type ConversationTimelineItem = {
    kind: 'event';
    id: string;
    createdAt: Date;
    value: ConversationEvent;
} | {
    kind: 'message';
    id: string;
    createdAt: Date;
    value: Message;
};
export declare function mergeConversationTimeline(messages: readonly Message[], events?: readonly ConversationEvent[] | null): ConversationTimelineItem[];