Fix mermaid diagram arrowheads not rendering#347
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jonathanhefner merged 1 commit intomodelcontextprotocol:mainfrom Jan 24, 2026
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The `@boneskull/typedoc-plugin-mermaid` creates both dark and light theme variants of each diagram, each with identical marker IDs (e.g., `#arrowhead`). When mermaid renders SVGs at runtime, lines reference `url(#arrowhead)`, but the browser resolves this to the first match in document order — the hidden dark-theme SVG — causing arrows to be invisible. The fix removes dark-theme `<div class="mermaid dark">` elements at build time, leaving only one SVG per diagram with unique marker IDs. A CSS filter (`filter: invert(1) hue-rotate(180deg)`) handles dark mode styling instead. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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jonathanhefner
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Jan 26, 2026
…am-arrowheads Fix mermaid diagram arrowheads not rendering
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The
@boneskull/typedoc-plugin-mermaidcreates both dark and light theme variants of each diagram, each with identical marker IDs (e.g.,#arrowhead). When mermaid renders SVGs at runtime, lines referenceurl(#arrowhead), but the browser resolves this to the first match in document order — the hidden dark-theme SVG — causing arrows to be invisible.The fix removes dark-theme
<div class="mermaid dark">elements at build time, leaving only one SVG per diagram with unique marker IDs. A CSS filter (filter: invert(1) hue-rotate(180deg)) handles dark mode styling instead.