import type { Subtitle } from '../types/editor';
/**
 * Generate an SRT (SubRip Text) string from a subtitle list.
 * Optionally filters by `lang`. Results sorted by startSec.
 */
export declare function toSRT(subs: Subtitle[], lang?: string): string;
/**
 * Generate a WebVTT string from a subtitle list.
 */
export declare function toVTT(subs: Subtitle[], lang?: string): string;
/**
 * Parse an SRT string back into Subtitle[]. Useful for import.
 */
export declare function parseSRT(srt: string, lang?: string): Subtitle[];
/** Download helper — triggers a browser file download */
export declare function downloadText(content: string, filename: string, mime?: string): void;
//# sourceMappingURL=subtitle-format.d.ts.map