EAN 13 lib

Typescript library for EAN 13 numbers basic features.

Installation

$ npm i ean13-lib --save

Usage

Number Validation

Returns if the input (13 length digits string) is an EAN 13 number or not.

import { Ean13Utils } from 'ean13-lib';

const result = Ean13Utils.validate('2621922006400');
expect(result).toBeFalsy();

const result = Ean13Utils.validate('2621922006390');
expect(result).toBeTruthy();

Check digit calculation

Calculates the input (12 digits string) check digit.

const result = Ean13Utils.calculateCheckDigit('262192200517');
expect(result).toBe(1);

Number Generation

Returns the input with the calculated check digit as the 13th digit.

const generatedBarcode = Ean13Utils.generate('262192200517');
expect(generatedBarcode).toBe(2621922005171);