cnp-decoder/src/functions/utils/validateCNP.ts

A function that decodes a romanian CNP and returns a object containing informations about the person it belongs to

export const validateCNP: (cnp: string) => RegExpMatchArray | null = cnp => {
  const cnpRegex = /^[1-9]\d{2}(0[1-9]|1[0-2])(0[1-9]|[12]\d|3[01])(0[1-9]|[1-4]\d|5[0-2]|99)(00[1-9]|0[1-9]\d|[1-9]\d\d)\d$/

  return cnp.match(cnpRegex)
}