/**
 * @copyright Sister Software
 * @license AGPL-3.0
 * @author Teffen Ellis, et al.
 *
 *   Postcode FORMAT → country evidence, pure and platform-free — the #928 unforgeable singles and the
 *   #1589 bare-context implied set. Lifted out of `mailwoman/geocode-core` so `@mailwoman/resolver`
 *   (which runs in the browser via the demo cascade) can derive the implied set itself instead of
 *   depending on a CLI-side caller to thread it — the 2026-08-11 staged-repoint e2e caught exactly
 *   that gap (`100 00` resolved in Node and not in the browser, same artifact). `geocode-core`
 *   re-exports everything here, so its consumers and tests are unmoved.
 */
/**
 * #928: distinctive postcode FORMATS that unambiguously indicate a country — a stronger country signal than the
 * language-based coarse placer, which conflates GB/US (both carry English street patterns) and mis-routes GB addresses
 * to US namesakes (`London E4 9AZ` → London, Ohio) at 0.94–0.96 confidence. The format is unforgeable across these
 * countries: the GB pattern (letters-first) never matches a US ZIP or an NL `\d{4} [A-Z]{2}` code. Extend ONLY with
 * formats validated as non-overlapping. Feeds the `postcodeCountryPrior` lever (gated, default-off pending its gate).
 */
export declare const POSTCODE_FORMAT_COUNTRY: ReadonlyArray<{
    readonly re: RegExp;
    readonly country: string;
}>;
/**
 * The country a parsed postcode's FORMAT implies, or null. See {@link POSTCODE_FORMAT_COUNTRY}.
 */
export declare function countryFromPostcodeFormat(postcode: string | undefined): string | null;
/**
 * EVERY country a parsed postcode's FORMAT is consistent with — the singles table, the NL PC6 shape, and the shared
 * `NNN NN` family. Empty when the shape implies nothing (a bare 5-digit reads US/FR/DE and more; that family stays with
 * the locale prior on purpose — the `75008` contract).
 *
 * Unlike {@link countryFromPostcodeFormat}, this is NOT an unforgeable-in-any-context claim: consumers (the resolver's
 * implied-set probe, the CLI's withheld-scope guard) apply it only to a tree that is a bare postcode, where the
 * street-fragment collision the singles table must exclude cannot arise.
 */
export declare function countriesFromPostcodeFormat(postcode: string | undefined): readonly string[];
//# sourceMappingURL=postcode-format.d.ts.map