import type { PDFViewer } from 'pdfjs-dist/web/pdf_viewer.d.mts';
import type { Ref } from 'vue';
interface UseZoomOptions {
    viewer: Ref<PDFViewer | undefined>;
    updateViewer: () => void;
    debounceUpdateViewer: () => void;
}
export declare function useZoom({ viewer, updateViewer, debounceUpdateViewer }: UseZoomOptions): {
    updateZoom: ({ steps, scaleFactor, origin, debounceUpdate }: {
        steps?: number;
        scaleFactor?: number;
        origin?: number[];
        debounceUpdate?: boolean;
    }) => void;
    zoomOut: () => void;
    zoomIn: () => void;
    adaptiveView: (enable?: boolean) => void;
    onWheel: (evt: WheelEvent) => void;
    onResize: (entries: ResizeObserverEntry[]) => void;
};
export {};