Why is Prettier rock solid? I've always wondered why Prettier is so good. The idea was mainstreamed by gofmt, but gofmt doesn't indent, which is the hard part. Not only does prettier solve this harder problem, but it is also solid. It has never broken my JS / TS code. I always wondered how it was so high quality. Today, I got the answer. This is Prettier's original author writing about it: Pretti