Who needs Graphviz when you can build it yourself?, https://spidermonkey.dev/blog/2025/10/28/iongraph-web.html.
SpiderMonkey has replaced Graphviz by a custom graph layout renderer for their internal devtools. This article explains how the algorithm works, step by step (inspired by Sugiyama et al.'s algorithm, used by Graphviz, but simplified and with more constraints).
Pretty neat!
