const fs = require('fs');
const qr = require('@adobe/helix-qr-code');

const bytes = fs.readFileSync('image_with_qr_code.jpg');
qr.decodeFromBuffer(bytes).then((decoded) => console.log(decoded));

const fs = require('fs');
const qr = require('@adobe/helix-qr-code');

qr.encodeToBuffer('text to be encoded').then((buf) => fs.writeFileSync('qr_code.png', buf)));

const qr = require('@adobe/helix-qr-code');

qr.encodeToSVG('text to be encoded').then((svg) => console.log(svg)));

const qr = require('@adobe/helix-qr-code');

qr.encodeToDataURL('text to be encoded').then((dataURL) => console.log(dataURL)));