[creationix]

How does CBOR retain JSON compatibility more than RX?

RX can represent any value JSON can represent. It doesn't even lose key order like some random-access formats do.

In fact, RX is closer to JSON than CBOR.

Take decimals as an example:

JSON numbers are arbitrary precision numbers written in decimal. This means it can technically represent any decimal number to full precision.

CBOR stores numbers as binary floats which are appriximations of decimal numbers. This is why they needed to add Decimal Fractions (Tag 4)

RX already stores as decimal base and decimal power of 10. So out of the box, it matches JSON