import { ShallowReactive, ComputedRef } from 'vue';
import { Engine } from '../..';
import { BlockModel } from '@vtj/core';
import { Context } from '@vtj/renderer';
export declare function useCurrent(): {
    engine: ShallowReactive<Engine>;
    current: ComputedRef< BlockModel | null>;
    isEmpty: ComputedRef<boolean>;
    context: ComputedRef< Context | null>;
};