Node Blocking Readline

index.js

// THIS WILL NOT WORK UNTIL NODE implements `Atomics` :) Soon?

const readline = require('readline');

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

function msleep(n) {
    Atomics.wait(new Int32Array(new SharedArrayBuffer(4)), 0, 0, n);
}

function sleep(n) {
    msleep(n * 1000);
}

const prompt = (p): string => {

    let answer = null
    rl.question(p, (a) => {
        answer = a
        rl.close();
    });

    while (answer === null) {
        sleep(10)
    }

    return answer || ''
}