Jadpo is experimental and not ready for production. These docs follow the compiler's main branch as of 5 Nov 2026. What's built · Install 0.3.0

ReferenceErrors

Errors Logic · rule

`syntax.named_argument_duplicate`

Named argument is given twice.

Area 3, Logic; not declinable; the next step is usually the agent's.

example

type Day = CalendarDate {}function london_morning(date: Day) -> Instant {    return temporal.resolve(        date: date,        at: "09:00",        zone: Zone.europe_london,        zone: Zone.europe_london,        dst: Dst.earlier    )}

jadpo checkcheck failed: 1 error, 1 file

error zone: is given twice

--> main.jadpo:8:9

  |7 |         zone: Zone.europe_london,  |         ---- first given here8 |         zone: Zone.europe_london,  |         ^^^^ given again here

reason: Each named argument is given once.
next: Remove one of the zone: arguments (agent)
rule: syntax.named_argument_duplicate
help: https://jadpo.dev/docs/errors/syntax.named_argument_duplicate

Markdown for agents: /docs/errors/syntax.named_argument_duplicate.md.Built from Jadpo main at aee2e8f.