If you want JSON with type checking, use a json schema. http://json-schema.org/examples.html http://json-schema.org/examples.html Been there for almost a deca

If you want JSON with type checking, use a json schema. http://json-schema.org/examples.html http://json-schema.org/examples.html Been there for almost a decade. Already supported by all the major json libraries in all the major languages.