On: mJS – A new approach to embedded scripting

[etiene]

Lua is the easiest language to learn I ever saw. It has a fantastic json support with the cjson library (https://luarocks.org/modules/luarocks/lua-cjson). It's there by default on many firmwares. Do check the docs for nodemcu, for example: https://nodemcu.readthedocs.io/en/master/ (a firmware for the ESP microcontrollers)

Not to mention Lua itself can be used as a data / configuration language, their tables syntax is made especially for that. Normally when I work with Lua I don't feel the need to embed any other parsers for configuration, but cjson is there if you want.