/**
 * .what = iso 8601 duration string format
 * .why = enables concise duration literals with compile-time validation
 * .note = no brand needed; template literal union is specific enough
 */
type IsoDurationWordsOnlyTime = `PT${number}S` | `PT${number}M` | `PT${number}H` | `PT${number}M${number}S` | `PT${number}H${number}S` | `PT${number}H${number}M` | `PT${number}H${number}M${number}S` | `PT${number}.${number}S` | `PT${number}H${number}.${number}S` | `PT${number}M${number}.${number}S` | `PT${number}H${number}M${number}.${number}S`;
type IsoDurationWordsOnlyDate = `P${number}Y` | `P${number}M` | `P${number}W` | `P${number}D` | `P${number}Y${number}M` | `P${number}Y${number}D` | `P${number}M${number}D` | `P${number}Y${number}M${number}D` | `P${number}W${number}D`;
type IsoDurationWordsCombined = `P${number}DT${number}H` | `P${number}DT${number}M` | `P${number}DT${number}S` | `P${number}DT${number}H${number}M` | `P${number}DT${number}H${number}S` | `P${number}DT${number}M${number}S` | `P${number}DT${number}H${number}M${number}S` | `P${number}DT${number}H${number}M${number}.${number}S` | `P${number}Y${number}M${number}DT${number}H${number}M${number}S` | `P${number}Y${number}M${number}DT${number}H${number}M${number}.${number}S` | `P${number}YT${number}H` | `P${number}YT${number}M` | `P${number}YT${number}S` | `P${number}Y${number}MT${number}H${number}M` | `P${number}Y${number}MT${number}H${number}M${number}S`;
export type IsoDurationWords = IsoDurationWordsOnlyTime | IsoDurationWordsOnlyDate | IsoDurationWordsCombined;
export {};