Migrate flowchart from dagre to elkjs

Hello, I was playing around with flowchart and really big diagram and find out that dagre has a lot issues with blocks positioning (like some blocks that has only one edge to other block in some subgroup unexpectedly far from that group, like across hole diagram) and with edges drawing which goes through other blocks.

I found good solution - elkjs it lot more configurable, smarter and can draw edges around a blocks

[abitrolly]

https://github.com/eclipse/sprotty might provide an alternative.

[richardtallent]

I’m having an issue with a site built with Vite, looks like it stems from this line in dagre’s “greedy-fas” file:

var Graph = require("./graphlib").Graph;

This results in “Uncaught TypeError: Cannot read properties of undefined (reading ‘Graph’)”.

Could be related to this issue. If so, I’d be willing to load the extra 100KB if it means I can keep using Mermaid. For now, I’ve had to remove it from my build, so my online docs have no fancy diagrams.