import type { PatternRule } from '../types.js';
/**
 * IBAN length per country (ISO 13616). The length alone rules out most
 * look-alikes; the mod-97 check then rules out the rest.
 */
export declare const IBAN_LENGTHS: Record<string, number>;
/**
 * ISO 7064 mod-97-10: move the first four characters to the end, replace
 * letters with two-digit numbers (A = 10 … Z = 35), and require a remainder
 * of 1. Computed piecewise so the number never exceeds safe integer range.
 */
export declare function ibanChecksum(raw: string): boolean;
export declare const globalIbanRule: PatternRule;
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