Repo: Add a way to detect breakages from new TS versions sooner #7093
Description
Suggestion
Splitting out from microsoft/typescript-error-deltas#119 (comment), courtesy of #7088: is there a way we can be informed of issues from new Typescript packages sooner?
I'd love to get to a point where we always spin up a feature branch whenever there's an RC/beta, but historically it's been hard to find maintainer time consistently...