CaseInsensitiveOneOf validator function that similar to validator.isOneOf but case-insensitive.

DefaultTranslator returns the default ut.Translator of the package.

SimpleTranslationRegFunc returns a translation registration function for simple validation translate template the returned function could be used to register custom translation override.

UniversalTranslator returns the globally configured ut.UniversalTranslatorTranslator callers can register more locales.