Align exports with dagre-d3

[sidharthv96]

Hi,

We're trying to migrate mermaid-js from dagre-d3 to dagre-es, but ran into trouble because some members are not exported in dagre-es.

mermaid-js/mermaid#3712 (comment)

Can we work together to expose the required items from dagre-es?

Thank you :)

[tbo47]

Sure, I will have a look.

[aloisklink]

I've manage to migrate the mermaid codebase from dagre/dagre-d3 to dagre-es, and it looks like it has fixed a bunch of security warnings, and mermaid's bundle sizes seems to have gone down by ~200 KB (the magic of ESM!) See mermaid-js/mermaid@d708ed8

Some of the exports were quite a bit different however, e.g. I had to do the following:

// before
import dagreD3 from 'dagre-d3';
dagreD3.intersect.polygon(node, points, point);

// after
import { intersectPolygon } from 'dagre-d3-es/src/dagre-js/intersect/intersect-polygon';
intersectPolygon(node, points, point);

To be honest, the new syntax is probably better from an ESM/tree-shaking perspective though, and is probably the big reason why the built bundle has gone down by so much!

Many thanks for creating this fork!

[tbo47]

I answered in the other thread mermaid-js/mermaid#3712

Don't hesitate to reopen this if needed.