Hint on how to parse this value. If the item is a Number or String, then this gives hints on how to parse it. It's a bitfield, with the first bit defining integer or float, the second bit defining
Item is not a value, or is a string that can be used in place.
Item is integral (no decimal or exponent).
number has decimal place, but no exponent
number has exponent (and is float).
string has escapes
See Implementation
Hint on how to parse this value. If the item is a Number or String, then this gives hints on how to parse it. It's a bitfield, with the first bit defining integer or float, the second bit defining