import { AbstractValidatableDocument } from '../../contracts/abstract-validatable-document.js';
import { ReasonCode } from '../../contracts/reason-code.js';
/**
 * Validates Brazilian CNH (Carteira Nacional de Habilitação) numbers.
 *
 * Algorithm (DENATRAN):
 *  1. DV1 (position 10): weighted sum of 9 digits with weights 9..1, mod 11.
 *     If rest > 9 → DV1 = 0 and `firstIsTenPlus` flag is set.
 *  2. DV2 (position 11): weighted sum of same 9 digits with weights 1..9, mod 11.
 *     If `firstIsTenPlus` is set, subtract 2 from the result (wrapping: if result < 0, add 9).
 *     If final result > 9 → DV2 = 0.
 */
export declare class CNHValidation extends AbstractValidatableDocument {
    protected documentName(): string;
    /**
     * Generates a valid CNH.
     *
     * The DV algorithm has overflow adjustments that are awkward to invert, so we
     * pick a random 9-digit base and scan the 100 possible check-digit pairs for
     * the one that validates — always exactly one exists. CNH has no canonical
     * mask, so there is no `formatted` option.
     */
    static generate(): string;
    protected doValidate(): ReasonCode | null;
}