ts-barcode-generator/dist/barcode-types/EAN13.js

Simple Barcode Generator created in TypeScript

import { convertBinaryStringToArray, convertToPairs, generateSimpleSvg1D } from '../utils';
class EAN13 {
    static calculateParity(data) {
        const leftDigits = data.slice(0, 6);
        const rightDigits = data.slice(6);
        const leftParity = leftDigits
            .split('')
            .map((digit) => this.LEFT_PARITY[digit])
            .join('');
        const rightParity = rightDigits
            .split('')
            .map((digit) => this.RIGHT_PARITY[digit])
            .join('');
        return leftParity + this.MIDDLE_MARKER + rightParity;
    }
    static generateBinaryRepresentation(data) {
        const parityData = this.calculateParity(data);
        return (this.START_MARKER +
            parityData +
            this.END_MARKER);
    }
    static Generate(data) {
        const binaryRepresentation = this.generateBinaryRepresentation(data);
        const arrayRepresentation = convertBinaryStringToArray(binaryRepresentation);
        const groupedPairs = convertToPairs(arrayRepresentation);
        const svg = generateSimpleSvg1D(groupedPairs);
        return svg;
    }
    static generate(data) {
        if (!/^\d{12,13}$/.test(data)) {
            throw new Error('EAN-13 must be 12 digits.');
        }
        return this.Generate(data);
    }
}
EAN13.START_MARKER = '101';
EAN13.MIDDLE_MARKER = '01010';
EAN13.END_MARKER = '101';
EAN13.LEFT_PARITY = {
    '0': '0001101',
    '1': '0011001',
    '2': '0010011',
    '3': '0111101',
    '4': '0100011',
    '5': '0110001',
    '6': '0101111',
    '7': '0111011',
    '8': '0110111',
    '9': '0001011',
};
EAN13.RIGHT_PARITY = {
    '0': '1110010',
    '1': '1100110',
    '2': '1101100',
    '3': '1000010',
    '4': '1011100',
    '5': '1001110',
    '6': '1010000',
    '7': '1000100',
    '8': '1001000',
    '9': '1110100',
};
export default EAN13;