JSON module does not conform to RFC 7159
From RFC 7159: http://tools.ietf.org/html/rfc7159
A JSON text is a serialized value. Note that certain previous specifications of JSON constrained a JSON text to be an object or an array.
This means that the following should be valid:
JSON.parse('1') JSON.parse('this is a string')
However, they each currently return a JSON::ParserError:
A JSON text must at least contain two octets!
757: unexpected token at 'this is a string'