GroundForge is still working with D3js-v4. The page https://d-bl.github.io/GroundForge/nets might be a good starting point to try an upgrade to the latest version, at this date of writing v7.
Look for upgrade instructions at the D3js documentation and replace the link to the GF copy of docs/js/d3.v4.min.js with a proper replacement and fix the JavaScript where necessary.
GF may only be using d3~4-force and d3~4-selection. Try to include just these components. They might have lower upgrade frequencies than the full package.
GroundForge is still working with D3js-v4. The page https://d-bl.github.io/GroundForge/nets might be a good starting point to try an upgrade to the latest version, at this date of writing v7.
Look for upgrade instructions at the D3js documentation and replace the link to the GF copy of
docs/js/d3.v4.min.jswith a proper replacement and fix the JavaScript where necessary.GF may only be using d3~4-force and d3~4-selection. Try to include just these components. They might have lower upgrade frequencies than the full package.