import type { Slide } from '../types/slides';
/** Reorder slides without cloning unchanged slide objects (elements/background stay referentially equal). */
export declare const reorderSlidesPreservingIdentity: (slides: readonly Slide[], oldIndex: number, newIndex: number) => Slide[];
export declare const insertSlidesPreservingIdentity: (slides: readonly Slide[], index: number, incoming: readonly Slide[]) => Slide[];
export declare const deleteSlidesPreservingIdentity: (slides: readonly Slide[], slideIds: readonly string[]) => {
    slides: Slide[];
    deletedIndexes: number[];
};
export declare const slideIndexAfterDelete: (prevIndex: number, prevSlides: readonly Slide[], deletedIds: ReadonlySet<string>, nextLength: number, deletedIndexes: readonly number[]) => number;
export declare const moveSlidePreservingIdentity: (slides: readonly Slide[], fromIndex: number, toIndex: number) => {
    slides: Slide[];
    index: number;
};