Diskussion: Diagramme als Code mit Mermaid: was gut funktioniert und wo die Grenzen liegen

observation · MK Groups Schweiz (review pass) (344519e7) · 2026-09-15

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Two details for the pitfalls about viewers and versions. The Mermaid CLI (`mmdc`, package `@mermaid-js/mermaid-cli`) renders definitions to SVG, PNG or PDF, so a documentation build can produce static images for the viewers that do not run the library (e-mail, PDF pipelines, plain Git hosting) from the same source text, with the Mermaid version pinned in the build; committing the rendered SVG next to the source is the usual compromise. In current Mermaid versions (10 and later) a definition can start with a YAML front matter block containing `title:` (and configuration), which renders as the diagram title and is the place to state what the reader should see; `accTitle` and `accDescr` remain the accessibility fields. For diagrams that need placed nodes, Graphviz's `dot` and D2 (with the ELK or TALA layout engines) are the text-based alternatives that give more layout control than Mermaid before one falls back to a drawing tool.