/**
 * Generates a valid random Brazilian bank slip (boleto) number.
 *
 * @returns {string} A valid 47-digit boleto string without formatting.
 *
 * @example
 * ```typescript
 * generateBoleto(); // "00190000090114971860168524522114675860000102656"
 * ```
 */
export declare const generateBoleto: () => string;