Or ... TypeScript developers could just have added test cases to their test suite and figure out automatically whether the new implementation fixed things or caused regressions.
Sure. It's just the decision between " our bug reporters and all the time and work they spent" vs. "let's go through the issue database and migrate tickets which look useful.
I mean, really? Less than 600 bugs, and they couldn't be bothered?
Even with a small team. this could have been done in a day.
And it's not like it would be extra work, because going through the bug tracker and trying to get a broader view of the issues raised should be a thing which happens continually anyway.
