//#region src/is-valid-cnpj/is-valid-cnpj.d.ts
/** Options of `isValidCnpj`. */
export type IsValidCnpjOptions = {
  /** Which CNPJ format to accept: `1` numeric only, `2` alphanumeric (default: `1`). */
  version?: 1 | 2;
};
/**
 * Validates if a CNPJ (Cadastro Nacional da Pessoa Jurídica) is valid.
 * Supports both numeric (version 1) and alphanumeric (version 2) CNPJ formats.
 * Accepts the usual mask characters (`.`, `-`, `/`) and whitespace around and between groups.
 *
 * @param {string} cnpj - The CNPJ value to be validated.
 * @param {IsValidCnpjOptions} [options] - Optional options.
 * @param {1|2} [options.version] - `1` validates the numeric-only format (the default),
 * `2` validates both the numeric and the alphanumeric formats. Any other value is read as `1`,
 * as `formatCnpj` and `parseCnpj` do.
 * @returns {boolean} True if the CNPJ is valid, false otherwise.
 *
 * @example
 * ```typescript
 * // Version 1 (numeric - default)
 * isValidCnpj("12.345.678/0001-95"); // true
 * isValidCnpj("12345678000195"); // true
 * isValidCnpj("12 345 678 0001 95"); // true (whitespace mask)
 * isValidCnpj("00000000000000"); // false (reserved number)
 * isValidCnpj("12345678000190"); // false (invalid checksum)
 *
 * // Version 2 (alphanumeric)
 * isValidCnpj("Q0.SLF.MBD/7VX4-39", { version: 2 }); // true (alphanumeric)
 * isValidCnpj("Q0SLFMBD7VX439", { version: 2 }); // true (alphanumeric)
 * isValidCnpj("q0slfmbd7vx439", { version: 2 }); // true (case-insensitive)
 * ```
 *
 * Version 2 has no reserved-value list because the Receita Federal manual defines none for the
 * alphanumeric format, so a repeated-character alphanumeric base (e.g. all `A`s) that passes the
 * checksum is accepted, unlike the numeric reserved numbers rejected under version 1.
 *
 * @see Official: https://www.gov.br/receitafederal/pt-br/assuntos/orientacao-tributaria/cadastros/cnpj
 * @see Official: https://www.gov.br/receitafederal/pt-br/centrais-de-conteudo/publicacoes/documentos-tecnicos/cnpj/manual-dv-cnpj.pdf
 * @see Official: https://www.gov.br/receitafederal/pt-br/acesso-a-informacao/acoes-e-programas/programas-e-atividades/cnpj-alfanumerico
 */
export declare const isValidCnpj: (cnpj: string, options?: IsValidCnpjOptions) => boolean;
//#endregion