validate-document-checker (npm): This code just checks if a brazilian document (CPF, CNPJ or PIS) is valid or not based on your verify code. For the PIS there is the need of a extra parameter, a boolean, to inform that the verify code has one character.
Keywords: cpf|cnpj|pis|validador|validator|validate document|document checker|brazilian document|brazilian|brazil|brasil|documento brasileiro