import { ViewRef } from '../types';
import { CoreTypes, View } from '@nativescript/core';
export type SizeDIP = {
    width: CoreTypes.dip;
    height: CoreTypes.dip;
};
/**
 * Reactive size of a NativeScript element.
 *
 * @param target
 * @param options
 */
export declare function useElementSize(target: View | ViewRef, options?: {
    onChange?: (size: SizeDIP) => void;
    initialSize?: SizeDIP;
}): {
    width: import("nativescript-vue").Ref<number, number>;
    height: import("nativescript-vue").Ref<number, number>;
};