import PureYAML

public extension PureYAML.JSON.Writer {
    /// A reason a value tree cannot be written as strict JSON.
    enum Failure: Error, Sendable, Equatable {
        /// A YAML complex (sequence/mapping) key has no JSON object-name form.
        case nonStringKey(String)
        /// JSON cannot represent NaN or infinity.
        case nonFiniteNumber(Double)
    }
}