absDuration

Signature

absDuration(value: string): string

import { absDuration } from "@northguild/gmt/duration/calculate";

Return the absolute value of an ISO 8601 duration string.

• Uses Temporal.Duration.from and .abs, then .toString() to re-emit.
• Like negateDuration, this only touches signs, so it never needs relativeTo and works on calendar-unit durations.
• An already-positive duration is returned re-emitted, not rejected — but re-emitted means canonicalized, so “P0D” comes back as “PT0S”.
• Returns “” when value is not a valid ISO 8601 duration string.

Parameters

Parameter	Type	Description
value	string	ISO 8601 duration string

Returns

ISO 8601 duration string with a positive sign, or “” on invalid input

Examples

absDuration("-P1DT2H") // "P1DT2H"
absDuration("P1DT2H") // "P1DT2H"
absDuration("-P1Y2M") // "P1Y2M" (no relativeTo needed)
absDuration("PT0S") // "PT0S"
absDuration("not a duration") // ""

Source

duration/calculate/absDuration.ts