/**
 * session-export — format a persisted session for export.
 *
 * Two formats:
 * - `formatJson` — the full SessionData as pretty-printed JSON (lossless,
 *   machine-readable, re-importable).
 * - `formatTranscript` — a human-readable Markdown transcript rendering each
 *   message with its role, tool-call names/args, and results.
 *
 * Both are pure functions over SessionData — no I/O, no deps — so they're
 * trivially testable.
 */
import type { SessionData } from '../../../core/types.js';
/** Lossless JSON dump of the full session record. */
export declare function formatJson(session: SessionData): string;
/**
 * Human-readable Markdown transcript. Tool calls within an assistant message
 * render as sub-sections; standalone role:"tool" results are joined by
 * toolCallId (the same join the feed-serializer does for the TUI display).
 */
export declare function formatTranscript(session: SessionData): string;