import { PptxSlide } from 'pptx-viewer-core';
import { SlideTemplateBuildOptions, SlideTemplateId } from 'pptx-viewer-shared';
/** Insert a new blank slide immediately after `afterIndex`. Returns its index. */
export declare function insertBlankSlideAfter(slides: readonly PptxSlide[], afterIndex: number): {
    slides: PptxSlide[];
    newIndex: number;
};
/**
 * Insert a pre-designed template slide immediately after `afterIndex`.
 * The slide content comes from the shared catalogue (`buildSlideTemplateSlide`),
 * so what the gallery previews is exactly what lands in the deck. Pass the
 * deck's scheme/canvas size in `options` so the new slide inherits the theme.
 */
export declare function insertTemplateSlideAfter(slides: readonly PptxSlide[], afterIndex: number, templateId: SlideTemplateId, options?: SlideTemplateBuildOptions): {
    slides: PptxSlide[];
    newIndex: number;
};
/** Duplicate the slide at `index` (fresh slide + element ids). Returns the new index. */
export declare function duplicateSlideAt(slides: readonly PptxSlide[], index: number): {
    slides: PptxSlide[];
    newIndex: number;
} | null;
/** Delete the slide at `index`. Returns the new active index, or `null` when it was the only slide. */
export declare function deleteSlideAt(slides: readonly PptxSlide[], index: number): {
    slides: PptxSlide[];
    newIndex: number;
} | null;
/**
 * Move a slide to a new order index and renumber the resulting deck. The
 * target index is evaluated against the original list, as native drag/drop
 * targets are: dropping slide 1 onto slide 3 produces [2, 3, 1].
 */
export declare function moveSlide(slides: readonly PptxSlide[], fromIndex: number, toIndex: number): PptxSlide[] | null;
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