what about handling CPF if zero at left?

[sibelius]

example

1004218907

context.true(isCPF('1004218907'));

isCPF says this is an invalid CPF

[sibelius]

failing test here https://github.com/VitorLuizC/brazilian-values/pull/43

[sibelius]

my current workaround

import { isCPF } from 'brazilian-values';

/**
 * Pattern to match formatted CPF (999.999.999-99) or 11 numbers.
 */
export const CPF_PATTERN = /^(\d{11}|\d{3}\.\d{3}\.\d{3}\-\d{2})$/;

const NonNumeric = /\D/g;

const mapToNumeric = (
  value: string,
): string => value.replace(NonNumeric, '');

const padding = '00000000000';

const leftPad = (str: string) => {
  return padding.substring(0, padding.length - str.length) + str;
}

export const isSafeCPF = (value: string): boolean => {
  if (!CPF_PATTERN.test(value)) {
    const onlyNumeric = mapToNumeric(value);
    const leftPadCpf = leftPad(onlyNumeric);

    return isCPF(leftPadCpf);
  }

  return isCPF(value);
}

[mechamobau]

@sibelius maybe this can be an issue with 4devs validator (or I'm wrong) because the verifier digit returned by validation it's 71 and not 7

[sibelius]

CPF can have less than 11 digits, so the current logic is wrong

Old CPF have less than 11 digits, my father CPF for instance

You need to left pad

[sibelius]

another even smaller CPF example

5120101

these are all real CPFs