/** A time as Alexa wants it: ISO 8601 in UTC. Text is taken as given. */
export function isoTime(time = new Date()) {
    return typeof time === "string" ? time : time.toISOString();
}
/** One property of a context or of a change, its fields in the order of the examples. */
export function property(namespace, name, value, options = {}) {
    return {
        namespace,
        ...(options.instance ? { instance: options.instance } : {}),
        name,
        value,
        timeOfSample: isoTime(options.timeOfSample),
        uncertaintyInMilliseconds: options.uncertaintyInMilliseconds ?? 0,
    };
}