import type { IMermaidManager, IMermaidMarkdown } from './tokens';
/**
 * An implementation of mermaid fenced code blocks in markdown.
 */
export declare class MermaidMarkdown implements IMermaidMarkdown {
    protected _mermaid: IMermaidManager;
    readonly languages: string[];
    readonly rank = 100;
    constructor(options: MermaidMarkdown.IOptions);
    /**
     * Pre-parse and cache the rendered text.
     */
    walk(text: string): Promise<void>;
    /**
     * Render the diagram.
     */
    render(text: string): string | null;
}
/**
 * A namespace for mermaid markdown
 */
export declare namespace MermaidMarkdown {
    /**
     * Initialization options for mermaid markdown
     */
    interface IOptions {
        mermaid: IMermaidManager;
    }
}