Finnish SSN validation and creation

• A micro Javascript library for validating and creating Finnish social security numbers
• Lightweight, 3.5kB (1.5kB gzipped)
• No dependencies

Installation

NPM

npm install finnish-ssn

Bower

bower install finnish-ssn

From unpkg.com

<script src="https://unpkg.com/finnish-ssn/dist/finnish-ssn.min.js"></script>

Usage

ES6

import FinnishSSN from "../finnish-ssn"
const isValid = FinnishSSN.validate('010101-100X');
console.log(isValid);
//  Yields true

Oldskool Web: Writes FinnishSSN into global namespace.

<script src="https://unpkg.com/finnish-ssn/finnish-ssn.min.js"></script>
<script>
  // This is valid SSN
  var isValid = FinnishSSN.validate('290296-7808');
  console.log(isValid);
  //  Yields true
</script>

Examples

Validate an SSN

//  This is valid SSN
console.log('valid ssn returns ' + FinnishSSN.validate('290296-7808'));
//  'valid ssn returns true'

//  This is invalid SSN
console.log('invalid ssn returns ' + FinnishSSN.validate('010198-1000'));
//  'invalid ssn returns false'

Parse SSN

//  This is valid SSN
var parsedSsn =  FinnishSSN.parse('290296-7808');
//  This is invalid SSN
console.log(parsedSsn);
{
  valid: true,
  sex: 'female',
  ageInYears: 19,
  dateOfBirth: Thu Feb 29 1996 00:00:00 GMT+0200 (EET)
}

Create an SSN for person that is 20 years old.

console.log('SSN for person that is 20 years old ' + FinnishSSN.createWithAge(20));
//  SSN for person that is 20 years old 010195-XXXX

Functions

#validate(ssn)

• Validates parameter given SSN. Returns true if SSN is valid, otherwise false

#parse(ssn)

• Parses parameter given SSN. Returns object {valid: boolean, sex: "male|female", ageInYears: Number, dateOfBirth: Date }

{
  valid: false,
  sex: null,
  ageInYears: null,
  dateOfBirth: null
}
{
  valid: true,
  sex: 'male',
  ageInYears: 15,
  dateOfBirth: Tue Feb 29 2000 00:00:00 GMT+0200 (EET)
}
{
  valid: true,
  sex: 'female',
  ageInYears: 15,
  dateOfBirth: Mon Feb 28 2000 00:00:00 GMT+0200 (EET)
}

#createWithAge(age)

• Creates a valid SSN using the given age (Integer). Generates randomly male and female SSN'n.

Building

# Build a distributable, minified UMD library compatible with browsers and Node
npm run dist

# Run tests
npm run test

# Run tests in watch-mode
npm run test:watch

Changelog

1.1.1

• FIXED: Issue 6: Bug in calculating age

1.1.0

• Sources ported from ES5 --> ES6
• Distributed js is transpiled to ES5 for backwards compatibility
• API should still be backwards compatible with 1.0.3. Bumping minor-version to be on the safe side.

1.0.3

• FIXED: Issue 2: Replace npmcdn.com with unpkg.com

1.0.2

• FIXED: Issue 1: Length is not verified

1.0.1

• Clean semicolons, removed lodash

1.0.0

• Initial release

Future development

• FlowType
• Use a better js doc tool

License

MIT License