Rule #2 is "illegal". JSON is actually "JavaScript OBJECT Notation", and raw integers are not "Objects". For compatibilities sake, I'd strongly encourage that NLD-JSON (New-Line Delimited JSON) contains valid JSON OBJECTS.

Some discussion here: https://stackoverflow.com/questions/17224536/why-is-one-numb...

...I am by no means the harbinger of all things JSON, but it's worth pointing out that this "spec" without addressing the issues that can arise from encouraging "bare" values (not wrapped in []/{}) is highly suspect.