anyone working on this space easily gets a +1!
I have struggled with code to diagram tools for a while [mermaid and graphviz], and usually return to figjam when I need the readabilty and aesthetics.
graph-viz is MASSIVE and a binary. mermaid requires the browser's svg rendering system to work. I just need something that builds diagrams from description easily ...
The problem with all these tools is that any diagram becomes unreadable past a certain number of nodes. So we need a higher amount of control over the compromise that is inherent in these scenarios. The approach taken by the author is a very good step in this direction and hopefully others will follow.
I used mermaid for https://basisrobotics.tech/2024/11/24/basis-robot-02-softwar... (autogenerated) and it worked out pretty well, but notably I wasn't trying to handle loops. There have to be mermaid to png renderers out there. Beyond that, I view svg/html output as a huge advantage - I can restyle it and it's copyable.
Mermaid is great in its niche, and being web-first has been its greatest asset. But that is also a great frustration because anytime I try to do anything out of the web-world with mermaid, it becomes a massive PITA thanks to needing a full headless browser.
I used graphviz to generate graphs for code structures, and that worked out great.
https://niravko.com/blog/visualize-cpp-data-structures#resul...
You might also check out D2, which had a recent run on the HN front page.
https://news.ycombinator.com/item?id=45707539
>graph-viz is MASSIVE and a binary. mermaid requires the browser's svg rendering system to work.
I succeeded to use resvg-js [1] with dagre/graphlib [2] to render graphs. resvg-js uses a 4 MB node library to render SVGs. dagre is used by mermaid for graph layout (for some of the diagram types). if you disable loading system fonts in resvg-js it just takes milliseconds to render the SVG.
I know that mermaid is well-known and very useful, but I don't like the code quality (especially consistency) and the bloat of dependencies. Last time I went through the code I assessed it requires significant refactorings to make it work with resvg-js, i.e. server-side graph layout and rendering.
There is also nomnoml [1], which is so great, it should deserve at least the same amount of attention as mermaid. the nomnoml codebase is a joy to read. the author even converted the dagre/graphlib codebase to typescript [4].
[1] https://github.com/thx/resvg-js [2] https://github.com/dagrejs/dagre [3] https://github.com/skanaar/nomnoml [4] https://github.com/skanaar/graphre
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Edit: One of the refactorings to make mermaid work with resvg-js is related to measuring svg text width. It's needed to determine the width of the graph node boxes. mermaid needs to be able to also use `resvg.getBBox()` to make it work with server-side rendering.
Surprised by your comment, I took a gander at graphviz; it's about a quarter of a million lines of code if you discount lib/sparse/color_palette.c and lib/edgepaint/lab_gamut.c, which are hundreds of thousands of lines of data values. This is much more than I expected.
If you want something that builds diagrams from textual descriptions, you might want to check out TikZ, which includes a subset of graphviz but also lets you draw anything you want. See https://en.wikipedia.org/wiki/PGF/TikZ. On the other hand, you won't have the rapid visual feedback you get with WYSIWYG drawing editors like FigJam.
I've had good results using ELK for a terraform diagram generator. You can see some samples here.
https://marketplace.visualstudio.com/items?itemName=infragra...