ReadonlyarchiveReadonlyreferenceReadonlywarningsCurrent warnings from one source, e.g. mapData("dwd"); [] when there are none.
A 2xx body that is not an array of objects (null, {}, an error object) rejects
with NinaParseError, never as an empty list. A value outside
NinaSourceValues (possible from plain JavaScript or a cast) is rejected with a
NinaValidationError before any request (see sourceProblem).
Warnings affecting a district, keyed by its district-level Amtlicher Regionalschlüssel;
[]when there are none. A 2xx body that is not an array of objects (null,{}, an error object) rejects withNinaParseError, never as an empty list (a false all-clear). The key is the district-level ARS: 12 digits, the last seven0. Any other shape (an 8-digit AGS, a municipality-level ARS, a lost leading zero) and a state-level key (digits 3-5000, other than Hamburg's and Berlin's, which the API would answer with[], a false all-clear) are rejected with aNinaValidationError(whose message isarsProblem's) before any request. A well-formed key NINA knows no district for (a Regierungsbezirk key such as051000000000, an unassigned number) gets HTTP 404, which rejects as aNinaApiError(status 404) whose detail saysno such district key "<ars>".