/**
 * Generates a valid CPF (Cadastro de Pessoas Físicas) number.
 * @param {object} [params]         - Options for CPF generation.
 * @param {boolean} [params.format] - If true, the generated CPF will be formatted with dots and a dash (e.g., 123.456.789-09).
 * @returns {string}                 The generated CPF number, optionally formatted.
 */
export declare const generate: (params?: {
    format: boolean;
}) => string;