PESEL Utils

A TypeScript library for validating and parsing Polish PESEL numbers.

Installation

npm install pesel-utils

Usage

In Node.js

const { Pesel } = require('pesel-utils');
// or
import { Pesel } from 'pesel-utils';

// Parse a PESEL number
const result = Pesel.parse('12345678901');
if (result) {
    console.log('Birth date:', result.birthDate);
    console.log('Gender:', result.gender);
} else {
    console.log('Invalid PESEL');
}

In Browser

<script type="module">
    import { Pesel } from 'https://cdn.jsdelivr.net/npm/pesel-utils/dist/index.esm.js';
    const result = Pesel.parse('12345678901');
    if (result) {
        console.log('Birth date:', result.birthDate);
        console.log('Gender:', result.gender);
    }
</script>

## Development

1. Clone the repository
2. Install dependencies: `npm install`
3. Build the library: `npm run build`
4. Run tests: `npm test`