React has some of the best migration policies I've seen. They give plenty of notice about upcoming breaking changes, including messages with pointers output by

React has some of the best migration policies I've seen. They give plenty of notice about upcoming breaking changes, including messages with pointers output by the library in development mode when code is used in a deprecated way. As well, since there are so many people using React, you can nearly always find a solution to a even obscure problems. I agree about the un-opinionated nature, though the resulting flexibility has led to some good options, they can be complicated to choose and wire together.