const ee = new (require("events")).EventEmitter();
const array = Array(1000).fill(0);
const delay = ms => new Promise(r => setTimeout(r, ms));

function funzioneAsincrona() {
    return new Promise(async (resolve, reject) => {
        ee.on("mioEvento", reject);
        for (let i = 0; i < array.length; i++) {
            // simula XHR
            await delay(100);
            console.log("op", i);
        }
    });
}
setTimeout(() => ee.emit("mioEvento"), 2000);

(async function run() {
    try {
        await funzioneAsincrona();
    } catch (err) {
        console.log("<<<<<< error");
    }
})();