We should fix all the @ts-ignore's introduced by #261

[Gozala]

Adding types uncovered some issues that had been 🩹 with @ts-ignore comments. We should address those.

[lidel]

This should be a follow-up task after ipfs/js-ipfs#2945 lands.

[BigLep]

I added a timebox note to the maintenance board: https://github.com/orgs/ipfs/projects/12#card-60212361