import type { ToolItem } from "../state/transcript-types.js";
export declare function formatDurationMs(ms: number): string;
export declare function shouldShowToolElapsed(toolName: string): boolean;
export declare function toolElapsedLabel(item: Pick<ToolItem, "name" | "status" | "timestamp" | "startedAt" | "endedAt">, now: number): string | undefined;
export declare function turnSummaryLabel(durationMs: number, status: "completed" | "aborted" | "error"): string;