export type OutputFormat = 'svg' | 'png';
/**
 * Renders mermaid diagram text to an SVG string using
 * the `beautiful-mermaid` library. No external process
 * is spawned — everything runs in-process.
 * @returns {string} The SVG markup as a string.
 */
export declare const renderMermaidSvg: (mermaidText: string) => string;
/**
 * Renders mermaid diagram text to an SVG file.
 * Uses `beautiful-mermaid` in-process, then writes
 * the result to a temp directory.
 * @returns {Promise<string>} The file path of the generated SVG.
 */
export declare const renderMermaidToFile: (mermaidText: string) => Promise<string>;
/**
 * Renders mermaid diagram text to a PNG file.
 * Uses `beautiful-mermaid` for SVG, then `@resvg/resvg-wasm`
 * to convert SVG to PNG. Writes to a temp directory.
 * @returns {Promise<string>} The file path of the generated PNG.
 */
export declare const renderMermaidToPng: (mermaidText: string) => Promise<string>;