import { Observable, Subscription } from './observable';
import { Props } from './props';
export declare enum VNodeType {
    Element = 0,
    SVG = 1,
    Comment = 2,
    Text = 3,
    Fragment = 4,
    Sink = 5,
}
export interface VNode {
    readonly vnodeType: VNodeType;
    readonly type: string;
    props: Props;
    children: VNode[];
    node?: Node;
}
export declare class VElementNode implements VNode {
    vnodeType: VNodeType;
    type: string;
    props: Props;
    children: VNode[];
    node?: HTMLElement;
    subscriptions: Subscription[];
    constructor(type: string, props: Props, children: VNode[]);
}
export declare class VSVGNode implements VNode {
    vnodeType: VNodeType;
    type: string;
    props: Props;
    children: VNode[];
    node?: SVGElement;
    subscriptions: Subscription[];
    constructor(type: string, props: Props, children: VNode[]);
}
export declare class VSinkNode implements VNode {
    vnodeType: VNodeType;
    type: 'sink';
    props: Props;
    children: VNode[];
    node?: Comment;
    source: Observable<any>;
    subscriptions: Subscription[];
    constructor(source: Observable<any>);
}
export declare class VTextNode implements VNode {
    vnodeType: VNodeType;
    type: 'text';
    props: {};
    children: never[];
    value: string;
    node?: Text;
    constructor(text: string);
}
export declare class VCommentNode implements VNode {
    vnodeType: VNodeType;
    type: 'comment';
    props: {};
    children: never[];
    node?: Comment;
}
export declare class VFragmentNode implements VNode {
    vnodeType: VNodeType;
    type: 'fragment';
    props: {};
    children: VNode[];
    node?: DocumentFragment;
    constructor(children: VNode[]);
}
export declare function isVNode(vnode: any): vnode is VNode;
export declare function isVElementNode(vnode: any): vnode is VElementNode;
export declare function isVSVGNode(vnode: any): vnode is VSVGNode;
export declare function isVSinkNode(vnode: any): vnode is VSinkNode;
export declare function isVTextNode(vnode: any): vnode is VTextNode;
export declare function isVCommentNode(vnode: any): vnode is VCommentNode;
export declare function isVFragmentNode(vnode: any): vnode is VFragmentNode;
export declare function isReusedNode(x: VNode): boolean;
export declare function toReusedNode<T extends VNode>(vnode: T): T;
export declare function getKey(vnode: VNode): string | undefined;
export declare function isSameKey(a: VNode, b: VNode): boolean;
export declare function hasSubscriptions(vnode: VNode): vnode is VNode & {
    subscriptions: Subscription[];
};
export declare function toVNode(x: any): VNode;