I released two apps built in dart on flutter. I loved it at the time, but I ran into this issue headlong with both of them. Release v1.0, move on to other things, come back in a year with a new computer to fix a minor bug and I can’t even compile the original release anymore, and had to spend forever rejiggering everything to get it back to the state it was when I left it. I really loved dart, and even flutter, building in it was a breeze. But the churn made the js ecosystem look slow.