import type { Slide } from '../types/slides';
import type { FikaDeckViewport } from './agentic/types';
/**
 * Recover the authored coordinate space from element bounds.
 *
 * Agent/import pipelines often author at 1280×720. Remounting those slides on
 * the 1000×16:9 default (or a persisted default written before inference)
 * overflows the canvas. Prefer an explicit viewport when it actually contains
 * the content; otherwise upgrade to the smallest standard size that fits.
 */
export declare function inferViewportFromSlides(slides: Slide[], existing?: Partial<FikaDeckViewport>): FikaDeckViewport | undefined;