/**
 * Debug report exporters: ASCII timeline, HTML run report, on-disk debug bundle.
 */
import type { TraceData } from "./index";
/** Terminal waterfall — timing bars proportional to span duration. */
export declare function toTimeline(data: TraceData, width?: number): string;
/** Self-contained HTML report — open in any browser. */
export declare function toHtml(data: TraceData, mermaid?: string): string;
export interface DebugBundlePaths {
    dir: string;
    json: string;
    timeline: string;
    mermaid: string;
    html: string;
    events?: string;
    otel?: string;
}
/** Write a debug folder for one run (JSON + timeline + Mermaid + HTML + optional events/OTel). */
export declare function writeDebugBundle(data: TraceData, options?: {
    dir?: string;
    mermaid?: string;
    events?: unknown[];
    otel?: unknown;
}): DebugBundlePaths;
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