Verify Mermaid diagram support is working correctly

[Copilot]

Investigation of reported issue: "Mermaid diagram support not on website, all the mermaid diagrams coming as text rather than diagram."

Findings

Mermaid diagrams render correctly in current codebase. Tested:

• Development build (npm run dev)
• Production build (npm run build + npm run preview)

Current Implementation

The feature was added in PR #119 and includes:

• mermaid package v11.12.1
• Mermaid.jsx component with async rendering
• LessonTemplate.jsx integration detecting language-mermaid code blocks
• Theme synchronization (light/dark)

// Mermaid.jsx - renders diagrams via mermaid.render()
const { svg } = await mermaid.render(id, chart);
setSvg(svg);

// LessonTemplate.jsx - detects and routes mermaid blocks
if (className === 'language-mermaid') {
  return <Mermaid chart={String(children).trim()} theme={theme} />;
}

Screenshot

Sequence diagram rendering correctly:

Conclusion

No code changes required. Feature is functional. Issue may have been:

• Already resolved in PR Fix responsive layout, eliminate horizontal scrolling, and add Mermaid diagram support #119
• Deployment-specific (not reproducible locally)
• Misreported or outdated

Original prompt

Mermaid diagram support not on website, all the mermaid diagrams coming as text rather than diagram.

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Project	Deployment	Preview	Comments	Updated (UTC)
hacking-tutorial	Ready	Preview	Comment	Nov 12, 2025 10:26pm

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