import { NodeKey, TextNode, LexicalNode } from 'lexical';
export declare class ExtendedTextNode extends TextNode {
    constructor(text: string, key?: NodeKey);
    private static getType;
    private static clone;
    private static importDOM;
    private static importJSON;
    private isSimpleText;
    private exportJSON;
}
export declare function $createExtendedTextNode(text: string): ExtendedTextNode;
export declare function $isExtendedTextNode(node: LexicalNode | null | undefined): node is ExtendedTextNode;