/**
 * @copyright Sister Software
 * @license AGPL-3.0
 * @author Teffen Ellis, et al.
 *
 *   US Census FIPS state codes → two-letter abbreviation + full display name.
 *
 *   Covers all 50 states + DC + the five primary territories (PR, GU, VI, MP, AS).
 *
 *   The data is public-domain US Census reference (FIPS PUB 5-2, withdrawn but still the canonical
 *   numeric ID used by every TIGER product). It is reproduced here so the TIGER adapter can resolve
 *   `statefp` columns (e.g. `"50"`) into a `region` component (e.g. `"VT"`) without an extra DB
 *   join.
 */
/**
 * Per-state record: two-letter postal abbreviation + full canonical display name.
 */
export interface USStateInfo {
    abbreviation: string;
    name: string;
}
/**
 * FIPS state-or-territory code → `{ abbreviation, name }`. Includes all 50 states, DC, and the five primary territories
 * (PR, GU, VI, MP, AS). Codes are two-digit zero-padded strings to match TIGER column `statefp`.
 */
export declare const US_FIPS_STATE: Readonly<Record<string, USStateInfo>>;
/**
 * Lookup helper. Returns null when the FIPS code isn't recognized.
 */
export declare function lookupFipsState(statefp: string | null | undefined): USStateInfo | null;
/**
 * Inverted view: two-letter postal abbreviation → `USStateInfo`. Built once at module load. Used by adapters whose
 * source data ships the abbreviation rather than the FIPS code (FCC BDC, most federal CSVs).
 */
export declare const US_STATE_BY_ABBREVIATION: Readonly<Record<string, USStateInfo>>;
/**
 * Lookup helper for adapters carrying 2-char USPS abbreviations (`"CA"`, `"VT"`). Case-folded; null for any value
 * outside the 50 states + DC + the five primary territories.
 */
export declare function lookupStateAbbreviation(abbreviation: string | null | undefined): USStateInfo | null;
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