/**
 * Minimal document interface covering the methods used internally by VirtualNode.
 * Using a local interface avoids structural incompatibilities between the real DOM
 * `Document` type and `IDocumentFactory` while still providing meaningful type safety.
 */
export interface VirtualNodeOwnerDocument {
    createElement(tagName: string): unknown;
    createTextNode(text: string): unknown;
    createDocumentFragment(): unknown;
    defaultView?: Window | null;
}
/**
 * Interface for VirtualNode subclasses that support custom element lifecycle callbacks.
 * Declared here so VirtualNode can call them without circular imports.
 */
export interface VirtualLifecycleCallbacks {
    connectedCallback?(): void;
    disconnectedCallback?(): void;
    attributeChangedCallback?(name: string, oldValue: string | null, newValue: string | null): void;
}
/**
 * Interface for VirtualHTMLElement constructor statics.
 */
export interface VirtualElementConstructor {
    tagName?: string;
    observedAttributes?: string[];
}
/**
 * Registers the factory function used to create VirtualTextNode instances.
 * Called by VirtualTextNode module initialization to break the circular dependency
 * between VirtualNode and VirtualTextNode.
 */
export declare function registerTextNodeFactory(factory: (text: string) => VirtualNode): void;
export declare class VirtualNode {
    nodeName: string;
    ownerDocument: VirtualNodeOwnerDocument | null;
    private _parentNode;
    private _childNodes;
    private _isConnected;
    private _rootConnected;
    constructor(nodeName?: string);
    get parentNode(): VirtualNode | null;
    get parentElement(): VirtualNode | null;
    get childNodes(): VirtualNode[] & {
        forEach: Array<VirtualNode>["forEach"];
    };
    get nextSibling(): VirtualNode | null;
    get previousSibling(): VirtualNode | null;
    get firstChild(): VirtualNode | null;
    get isConnected(): boolean;
    get textContent(): string | null;
    set textContent(value: string | null);
    /**
     * Marks this node as a connected root (like document body or remote document root).
     * When set to true, this node and all its descendants become "connected".
     */
    setRootConnected(connected: boolean): void;
    private _isAncestorConnected;
    private _updateConnected;
    private _adoptChild;
    private static _propagateOwnerDocument;
    private _removeChildInternal;
    private static _isFragment;
    append(...nodes: VirtualNode[]): void;
    prepend(...nodes: VirtualNode[]): void;
    appendChild(child: VirtualNode): VirtualNode;
    insertBefore(newNode: VirtualNode, referenceNode: VirtualNode | null): VirtualNode;
    removeChild(child: VirtualNode): VirtualNode;
    replaceChild(newChild: VirtualNode, oldChild: VirtualNode): VirtualNode;
    remove(): void;
}
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