Unqualified "TODO" code comment

[jugglinmike]

The update-bcd.ts script has eight "TODO"-style code comments, but one of them omits an explanation of the task which motivated it:

mdn-bcd-collector/update-bcd.ts

Lines 290 to 295 in 723b755

	lastWasNull = false;
	} else if (supported === null) {
	lastWasNull = true;
	// TODO
	} else {
	throw new Error(`result not true/false/null; got ${supported}`);

The comment introduced in 2020 via commit d5ff5fe. Its position implies that something more ought to be done when encountering a browser version with no support information, but I haven't been able to infer what that is.

I've been gathering together a list of enhancements for that script, and I don't want to miss whatever functionality motivated that comment.

[foolip]

@queengooborg can you speak to this?

[foolip]

Closing this issue to tombstone this repo. @jugglinmike since the update script has now moved to BCD in mdn/browser-compat-data#19971, can you refile the issue on BCD if you feel it is still relevant?