generate bar code

gen_bar_code.js

const bwipjs = require('bwip-js');
const fs = require('fs');

async function genImgs() {
    for (let i = 1; i < 500 ; i++) {
        const stream = fs.createWriteStream("./" + i + ".png");

        let buf = await bwipjs.toBuffer({
            bcid: 'code128',
            text: '' + i,
            scale: 3,
            height: 10,
            includetext: true,
            textxalign: 'center',
            dpi:300
        });
        await stream.write(buf);
    }
}


genImgs();