Add mermaid support for Vitepress. It detects any dark theme that are set in body as long as it has dark in the name

See the docs 📕
and a complex example 😎

npm i vitepress-plugin-mermaid mermaid @mermaid-js/mermaid-mindmap -D

Add wrapper

// .vitepress/config.js
import { withMermaid } from "vitepress-plugin-mermaid";

export default withMermaid({
  // your existing vitepress config...
});

Use in any Markdown file

<!---any-file.md-->

```mermaid
flowchart TD
  Start --> Stop
```