Yeah, I like to think there are more marble tests out there in private repos. The number of downloads that
rxjs-marbles receives suggests that there should be.
In previous versions of RxJS, the helpers — like the
cold observable creators — were for internal use only.
rxj-marbles makes similar helpers available via a context — to avoid globals and test framework specifics. However, with the v6 changes,
rxjs-marbles is now just a thin wrapper around