alt Hacker News> JSON: No comments, no datatypes, no good system for validation.
I don't agree at all. With tools like Zod, it is much more pleasant to write schemas and validate the file than with XML. If you want comments, you can use JSON5 or YAML, that can be validated the same way.
I think you have it backward. Libraries like zod exist _because_ JSON is so ubiquitous. Someone could just as easily implement a zod for XML. I’m not a huge proponent of XML (hard to write, hard to parse), but what you describe are not technical limitations of the format.