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
jadpo
ReferenceErrors

ErrorsConfiguration · rule

syntax.locales_unknown_option

Locales declaration has no such option.

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

There is no unsupported: setting (see "Locales"). A misspelt option (suported:) is reported the same way, with the nearest name:

example
locales {    default: Locale.en_gb    supported: [Locale.en_gb]    unsupported: Locale.fr_fr}
jadpo checkcheck failed: 1 error, 1 file

error unsupported isn't an option of locales

--> main.jadpo:4:5

  |4 |     unsupported: Locale.fr_fr  |     ^^^^^^^^^^^ unknown option
reason
There is no unsupported: setting. A request field typed Locale is decoded like any enum, so a tag the application doesn't support is an invalid_value failure, and choosing a language from an Accept-Language header falls back to default:.
next
Remove unsupported: (agent)
rule
syntax.locales_unknown_option
help
https://jadpo.dev/docs/errors/syntax.locales_unknown_option

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