I've taken the strategy of emitting JSON, but accepting YAML input (maybe a restricted subset in cases where it's untrusted data). YAML can function as a super-

I've taken the strategy of emitting JSON, but accepting YAML input (maybe a restricted subset in cases where it's untrusted data). YAML can function as a super-set of JSON, so you can have comments in hand-written/modified data this way while emitting a simpler to parse data format.