parseSizes.js

//https://www.digitalocean.com/community/tutorials/how-to-read-and-write-csv-files-in-node-js-using-node-csv
const fs = require('fs');
const csv  = require("csv-parse");
const builder = require('xmlbuilder');

const data = [];

fs.createReadStream('./input/sizes.csv')
    .pipe(csv.parse({ delimiter: ";", from_line: 2 }))
    .on("data", row => {
        data.push(row);
    })
    .on('end', () => {
        var xml = builder.create('catalog')
            .dec({'encoding': 'UTF-8'})
            .att('catalog-id', 'goodwill-master')
            .att('xmlns', 'http://www.demandware.com/xml/impex/catalog/2006-10-31');

        data.forEach((row) => {
            xml.ele('product')
                .att('product-id', row[1])
                .ele('custom-attributes')
                    .ele('custom-attribute')
                        .att('attribute-id', 'size')
                        .text(row[4]);
        });

        fs.writeFile('./output/catalog-sizes.xml', xml.end({ pretty: true }), "utf-8", err => {
            if (err) {
                console.error(err);
            }
        });
    });