let _initialized = false;

export async function renderMermaid(def: string): Promise<string> {
  const mermaid = (await import("mermaid")).default;
  if (!_initialized) {
    mermaid.initialize({ startOnLoad: false, theme: "default" });
    _initialized = true;
  }
  const id = `mermaid-${Math.random().toString(36).slice(2)}`;
  const { svg } = await mermaid.render(id, def);
  return svg;
}