import type { BookletLocale } from './booklet-locale';
import type { GenerationTimelineLayout } from './booklet-timeline';
export declare function clearBookletTimelineRasterCache(): void;
/** Loads canvas timeline rasterization (only when `timelineStyle === 'canvas'`). */
export declare function ensureBookletTimelineRaster(): Promise<void>;
export declare function rasterizeGenerationTimelinePng(layout: GenerationTimelineLayout, pageNote?: string, locale?: BookletLocale): Promise<Uint8Array>;