Jadpo is experimental and not ready for production. These docs follow the compiler's main branch as of 30 Oct 2026. What's built · Install 0.1.0
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Reference: Configuration and time

Configuration and time · rule

type.temporal_option_unused

Option means nothing for this value.

Area 10, Configuration and time; not declinable; the next step is usually the agent's.

example
type ShopDay = CalendarDate {}function next_day(day: ShopDay) -> ShopDay {    return temporal.add_days(day, 1, dst: Dst.compatible)}
text
error: `dst:` means nothing for a `ShopDay` --> main.jadpo:4:38  |4 |     return temporal.add_days(day, 1, dst: Dst.compatible)  |                                      ^^^ `ShopDay` has no clock time  reason: `dst:` chooses an instant when a local time falls in a daylight-saving gap or overlap; `temporal.add_days` on a `ShopDay` moves a date, which has no clock time, so no such time arises.  next: Remove `dst: ...` (agent)  rule: type.temporal_option_unused  help: https://jadpo.dev/docs/errors/type.temporal_option_unusedcheck failed: 1 error, 1 file

zone: on a date or a local time is reported the same way: a ZonedTime carries its zone, and a CalendarDate has none.

Markdown for agents: /docs/errors/type.temporal_option_unused.md.Built from Jadpo main at a707efb.