import { ViewRef } from '../types';
import { View } from '@nativescript/core';
/**
 * Reactive size of a NativeScript element.
 *
 * @param target
 * @param options
 */
export declare function useKeyboard(options?: {
    onChange?: (isOpen: boolean) => void;
    defaultTarget?: View | ViewRef;
}): {
    isOpen: Readonly<import("nativescript-vue").Ref<boolean, boolean>>;
    open: (target?: View | ViewRef) => void;
    close: () => void;
};