Const
Error raised when an option parameter fails to satisfy a choice constraint.
Warning produced when a deprecated option is supplied on the command-line.
Error raised when an option is supplied with an inline parameter, despite it being disallowed.
Error raised when there are duplicate option names, cluster letters or environment variables.
Error raised when a choices constraint has a duplicate value.
Error raised when a variadic option is supplied in the middle of a cluster argument.
Error raised when an option declares an invalid inline constraint.
Error raised for an option that is not suppliable.
Error raised when an option has an invalid name, cluster letter or environment variable.
Error raised when a function option has an invalid parameter count.
Error raised when an option references a non-valued option in a requirement.
Error raised when an option uses a nullish value in a requirement referencing an option that is either always required or has a default value.
Error raised when an option references itself in a requirement.
Error raised when an option value fails to satisfy a count limit constraint.
Error raised when an option is supplied with no inline parameter, despite it being required.
Error raised when an option is supplied without one of its expected parameter(s).
Error raised when an option that is always required was not supplied.
Warning produced when a name slot contains names with different naming conventions.
Error raised when an option parameter fails to satisfy a regex constraint.
Warning produced when an option name is too similar to other names.
Error raised when an option name is not found, with possible name suggestions.
Error raised when an option references an unknown option in a requirement.
Error raised when an option's conditional requirement is not satisfied.
Error raised when an option's forward requirement is not satisfied.
Warning produced when a variadic option declares cluster letters.
The kind of error/warning produced by the parser or validator.