import type { SessionTimelineItem } from '../session/transcript-outline.js';
export interface TuiTimelineTurn {
    id: string;
    turn: number;
    displayIndex: number;
    rowNumber?: number;
    preview: string;
    timestamp?: number;
    toolCount: number;
    running: boolean;
}
export declare function buildTuiTimelineTurns(items: readonly SessionTimelineItem[]): TuiTimelineTurn[];
export declare function findTimelineTurnByNumber(turns: readonly TuiTimelineTurn[], turnNumber: number): TuiTimelineTurn | undefined;
export declare function findNearestTimelineTurnByDisplayIndex(turns: readonly TuiTimelineTurn[], displayIndex: number): TuiTimelineTurn | undefined;
export declare function formatTimelineToolSummary(toolCount: number): string;