[elgertam]

Many commends are (correctly IMO) pointing to JSON as superior to YAML given YAML's problems, but these ignore JSON's problems due to its lack of semantics. When moving JSON between systems, the JSON parser makes certain assumptions about the JSON document, such as whether the numbers represent integers or single-precision or double-precision floats. This is certainly less obnoxious than "no" being treated as a bool, but it is a problem.

A friend of mine created Preserves[0] in part to resolve this problem. I'd encourage everyone to check it out. To be fair, he's also quite pro-Dhall and Nix.

[0] https://news.ycombinator.com/item?id=34354614

[theamk]

The simple answer to that is to store anything that may not fit in double without loss as a string. (I don't know of JSON decoders which use floats)

After all, one of the biggest upsides of JSON is its wide language/tool compatibility. And that means intentionally limiting the format to the most basic subset of types that all languages have.