import { type VNode } from 'vue';
export declare function flatVNode(nodes: any): VNode[];
export declare const OnlyChild: import("vue").DefineComponent<{}, () => VNode<import("vue").RendererNode, import("vue").RendererElement, {
    [key: string]: any;
}> | null, {}, {}, {}, import("vue").ComponentOptionsMixin, import("vue").ComponentOptionsMixin, {
    update(_el: HTMLElement | null): true;
}, string, import("vue").PublicProps, Readonly<{}> & Readonly<{
    onUpdate?: ((_el: HTMLElement | null) => any) | undefined;
}>, {}, {}, {}, {}, string, import("vue").ComponentProvideOptions, true, {}, any>;