Consider this: it’s much easier to parse S-Expressions than JSON! Plus, in statically typed languages, this script could excel, because it declares the type first. Remember that you can always use my S-Expression parser in C to parse them:

https://gist.github.com/Chubek/d2f0ac9067521716d2ab31c93948e885

PS: Is it just me, or ‘JSON to Sexp’ sounds like ‘Jason 2: Sex Pest’?