Hacker News: astmhttps://news.ycombinator.com/user?id=astmHacker News RSShttps://hnrss.org/hnrss v2.1.1Fri, 17 Apr 2026 09:57:46 +0000<![CDATA[Show HN: Mermaid Formatter – CLI and library to auto-format Mermaid diagrams]]>I built a zero-dependency formatter for Mermaid diagram syntax. It normalizes indentation, whitespace, and arrow spacing across all diagram types.

Features: - CLI tool (mermaidfmt) with stdin/file/in-place support - Programmatic API for integration (e.g. format Mermaid blocks in Markdown) - Nested block indentation (alt/loop/par/subgraph track depth) - Context-aware parsing (else only inside alt, and only inside par) - Arrow normalization: A->>B:msg → A ->> B: msg

npm install -g mermaid-formatter

Comments URL: https://news.ycombinator.com/item?id=46921778

Points: 1

# Comments: 0

]]>Sat, 07 Feb 2026 06:25:42 +0000https://github.com/chenyanchen/mermaid-formatterastmhttps://news.ycombinator.com/item?id=46921778https://news.ycombinator.com/item?id=46921778<![CDATA[New comment by astm in "Tell HN: OpenAI removed all my ChatGPT history without telling me"]]>+1

]]>Wed, 08 Mar 2023 03:46:29 +0000https://news.ycombinator.com/item?id=35064974astmhttps://news.ycombinator.com/item?id=35064974https://news.ycombinator.com/item?id=35064974