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);