Converter for transforming every line of a TXT file into its seperate entry inside a JSON file

converter.js

const config = {
    "inputfile":"list.txt",
    "outputfile":"list.json"
}

const fs = require('fs')
const readline = require('readline');
(async () => {
    console.log('Started.')
    const fileStream = fs.createReadStream(config.inputfile);
    const rl = readline.createInterface({
        input: fileStream,
        crlfDelay: Infinity
    });
    const out = [];
    rl.on('line', async (line) => {
        out.push(line)
    })
    rl.on('close', () => {
        fs.writeFile(config.outputfile, JSON.stringify(out), (err) => {
            if (err) return console.error(err)
            else console.log('Completed.')
        })
    })
})();