Feature request: JSON error offset in ValidationError about jsonschema HOT 2 CLOSED

during validation, we get the json-path at which validation has failed.

computing offset for given json-path is not trivial.

also we support validation given map:
func (s *Schema) ValidateInterface(doc interface{}) (err error)
in this case offset field does not make sense

from jsonschema.

WON'T FIX

json parser in std library does not provide offset for json tokens.
so it is not trivial supporting this

from jsonschema.