I totally agree. I'd love to see more languages supporting bidirectional code transforms. I've used jscodeshift [0] to refactor large JavaScript codebases, and

I totally agree. I'd love to see more languages supporting bidirectional code transforms. I've used jscodeshift [0] to refactor large JavaScript codebases, and it's absolutely amazing. It's incredibly empowering to write code to update your code. For example: unhappy with your test assertions library? Safely migrate all your tests with a quick script. The React team has a react-codemod [1] repo which has scripts to help you update to newer APIs. That means they can make changes and iterate on improvements without leaving people behind. Quite frankly, I don't see why more tools, libraries, and frameworks wouldn't do the same. [0] https://github.com/facebook/jscodeshift https://github.com/facebook/jscodeshift [1] https://github.com/reactjs/react-codemod https://github.com/reactjs/react-codemod