Generated CUID contains 'undefined'

[phr3nzy]

Hello, wonderful library!

When I generate a CUID, the result is undefined${cuid}. I'm unsure why this is happening.

Reproduction

• install typescript, ts-node, and this library using pnpm
• Create index.ts with file under
• Run using pnpm ts-node index.ts

import { assert } from 'node:console';
import { randomInt } from 'node:crypto';
import { init, isCuid } from '@paralleldrive/cuid2';

const MAX_NUMBER = 2 ** 48 - 1;

function randomNumber(): number {
	return randomInt(MAX_NUMBER);
}

export const createCuid = init({
	length: 12,
	random: randomNumber,
	fingerprint: 'api',
});

export function cuid(): string {
	const cuid = createCuid();
	assert(isCuid(cuid), 'Generated CUID is not valid');
	assert(
		cuid.match(/undefined/) === null,
		'Generated CUID contains "undefined"',
	);

	return cuid.replace(/undefined/, '');
}

console.log(cuid());

Environment

• node.js v20.15.0
• pnpm 9.7.0
• typescript