singuerinc / better-dni

// npm
npm i better-dni

// yarn
yarn add better-dni

import { isValid, isNIF, isNIE, ctrlChar } from "better-dni";

// validates any type of DNI (NIE or NIF)
isValid("Z7662566Y"); //=> true

// checks if it is a valid NIF
isNIF("06672804K"); //=> true

// checks if it is a valid NIE
isNIE("X1302311M"); //=> true

// returns the control letter in upper case
ctrlChar("X1302311M"); //=> 'M'
ctrlChar("X1302311"); //=> 'M'

import { randomNIF, randomNIFWith } from "better-dni";

randomNIF(); //=> '31719111H'

// returns a valid random NIF given the control letter
randomNIFWith("C"); // => '95652190C'

// a seed (Number) can be provided and it will always return the same result
randomNIFWith("G", 1); //=> '95652174G'
randomNIFWith("G", 1); //=> '95652174G'

import { randomNIE, randomNIEWith } from "better-dni";

randomNIE(); //=> 'X1120409X'

// returns a valid random NIE given the first and control letter
randomNIEWith("Y", "C"); //=> 'Y2098020C'
randomNIEWith("Z", "G"); //=> 'Z5670557G'

// a seed (Number) can be provided and it will always return the same result
randomNIEWith("X", "E", 1); //=> 'X2080280E'
randomNIEWith("X", "E", 1); //=> 'X2080280E'

// Returns a "clean" dni string removing spaces, dashes, etc.
normalize(" x-9464186_p   "); // => "X9464186P"