Spammy console.log of NaN in descent.ts

[andoppomny]

The following from descent.ts:

                    if (!isFinite(gs))
                        console.log(gs);

sometimes causes an excessive amount of console logging of NaN for me, causing me to have to kill the browser tab.
Probably there shouldn't be log statements in this library, but if there has to be, they should have helpful messages. Could it throw an exception instead?

I'm using cytoscape.js with the cytoscape-cola plugin. I use Vite dev server, and the problem seems to be triggered sometimes after a hot reload. So I'm not considering this a true bug in webcola, just a situation that shouldn't arise that isn't handled well.