Node.js - promisify readline

Question

As the title states, I was wondering if it is possible to use promisify (https://nodejs.org/dist/latest-v8.x/docs/api/util.html#util_util_promisify_original) for readline in node.js? I was only able to do it like this:

let data = [];
const parse = () => {
    return new Promise((resolve, reject) => {

        const rl = readline.createInterface({
            input: fs.createReadStream(path)
        });

        rl.on('line', (line) => {
            data.push(line);
        });

        rl.on('close', () => {
            resolve(data);
        });
    });
};

Answer 1

Here you have a simple way to do it that doesn't use promisify:

const readline = require('readline').createInterface({
    input: process.stdin,
    output: process.stdout
});

function question(query) {
    return new Promise(resolve => {
        readline.question(query, resolve);
    });
}

async function main() {
    const name = await question('Whats your name? ');
    console.log(`hello ${name}!`);
    readline.close();
}

main();