import type { SlideGuide } from '../types/slides';
import type { SnapBox, SnapResult } from './snap';
/** Import may contain unknown metadata. Ignore invalid guides before geometry calculations. */
export declare function validPageGuides(value: unknown): SlideGuide[];
/** Explicit guides take priority within six screen pixels, independent of zoom. */
export declare function snapToPageGuides(box: SnapBox, guides: readonly SlideGuide[], scale: number, base: SnapResult): SnapResult;