duration/format
formatDuration: Render an ISO 8601 duration string as a locale-aware, human-readable string.
FormatDurationOptions: HowformatDurationwrites unit names, and whether it writes zero components.
formatDuration: Render an ISO 8601 duration string as a locale-aware, human-readable string.FormatDurationOptions: How formatDuration writes unit names, and whether it writes zero components.