export declare function formatCpf(cpf: string): string;
export declare function formatCnpj(cnpj: string): string;
export declare function formatDocument(documento: string): string;
export declare function isCpf(documento: string): boolean;
export declare function isCnpj(documento: string): boolean;
export declare const isDocumentoPF: (documento: string) => boolean;
export declare function capitalize(value: string): string | null;
export declare function capitalizeFirstLetter(value: string): string | null;
export declare function addNoValueContent<T>(obj: T): T;