import { Ref } from 'vue';
export type UseResizeObserverOptions = {
    /**
     * Sets which box model the observer will observe changes to.
     *
     * @default 'content-box'
     */
    box?: ResizeObserverBoxOptions;
};
/**
 * Template ref of either a native HTML element or a custom Vue component.
 */
export type VueTemplateRefElement = Element | {
    $el: Element;
} | null | undefined;
export declare const useResizeObserver: (
/**
 * Target to observe. If undefined, the documentElement will be observed.
 */
target?: Ref<VueTemplateRefElement>, options?: UseResizeObserverOptions) => {
    width: Ref<number, number>;
    height: Ref<number, number>;
};
/**
 * Gets the native HTML element of a template ref.
 */
export declare const getTemplateRefElement: (ref: VueTemplateRefElement) => Element | undefined;