import type { DOMConversionMap, DOMExportOutput, LexicalNode, NodeKey, SerializedLexicalNode, Spread } from 'lexical';
import { DecoratorNode } from 'lexical';
import { type JSX } from 'react';
export interface MermaidPayload {
    code: string;
    theme?: string;
    mode?: string;
    key?: NodeKey;
}
export type SerializedMermaidNode = Spread<{
    code: string;
    theme?: string;
    mode?: string;
    type: 'mermaid';
    version: 1;
}, SerializedLexicalNode>;
export declare class MermaidNode extends DecoratorNode<JSX.Element> {
    __code: string;
    __theme?: string;
    __mode?: string;
    static getType(): string;
    static clone(node: MermaidNode): MermaidNode;
    static importJSON(serializedNode: SerializedMermaidNode): MermaidNode;
    exportJSON(): SerializedMermaidNode;
    static importDOM(): DOMConversionMap | null;
    exportDOM(): DOMExportOutput;
    constructor(code: string, theme?: string, mode?: string, key?: NodeKey);
    getCode(): string;
    setCode(code: string): void;
    getTheme(): string | undefined;
    setTheme(theme: string): void;
    getMode(): string | undefined;
    setMode(mode: string): void;
    createDOM(): HTMLElement;
    updateDOM(): false;
    decorate(): JSX.Element;
}
export declare function $createMermaidNode({ code, theme, mode, key }: MermaidPayload): MermaidNode;
export declare function $isMermaidNode(node: LexicalNode | null | undefined): node is MermaidNode;