import type { PatternRule } from '../../types.js';
/**
 * REGON — the statistical business register number issued by GUS.
 * Nine digits for the entity, fourteen for a local unit; both end in a
 * modulo-11 check digit, with a remainder of 10 folded to 0.
 */
export declare function regonChecksum(raw: string): boolean;
export declare const regonRule: PatternRule;
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