Repo: Enable strict & stylistic configs internally #6827
Description
Suggestion
Labeling this in the v6 milestone because if we go for this, I'd like it to be used as dogfood / real world user feedback. Similar benefits tracked in #6759, so removing this from the v6 milestone.
Right now in our internal ESLint config we just enable recommended-type-checked: 5346b5b
It'd sure be nice if we used our own strict & stylistic configs!