extension PureYAML.Parsing.LibYAML {
    /// A scanning error, mirroring libyaml's `yaml_parser_set_scanner_error`
    /// (`context` plus `problem` at a mark). It is mapped to the package's public
    /// `ParseError` when the port is integrated.
    struct ScannerError: Swift.Error, Equatable {
        var context: String
        var problem: String
        var mark: PureYAML.Parsing.Mark
    }
}