import { AbstractValidatableDocument } from '../../contracts/abstract-validatable-document.js';
import { ReasonCode } from '../../contracts/reason-code.js';
/**
 * Validates Brazilian PIS/PASEP (Programa de Integração Social) numbers.
 */
export declare class PISValidation extends AbstractValidatableDocument {
    protected documentName(): string;
    /**
     * Generates a valid PIS/PASEP.
     *
     * @param formatted When true, returns the masked form (000.00000.00-0).
     */
    static generate(formatted?: boolean): string;
    protected doValidate(): ReasonCode | null;
    /** Canonical PIS mask: 000.00000.00-0. */
    protected mask(stripped: string): string;
}