[Rantenki]

As a comparison, here's the "Why RON" for the native RON/Rust format:

Note the following advantages of RON over JSON:

  * trailing commas allowed
  * single- and multi-line comments
  * field names aren't quoted, so it's less verbose
  * optional struct names improve readability
  * enums are supported (and less verbose than their JSON representation)

I feel like they are close enough that it would be better to just use RON, which has existing uptake/tooling.

[pjmlp]

So basically JSON5, while not being a standard.