Async/await analog with promises

spammers.js

let spammers = [];

getUser()
    .catch(onGetUserErrorHandler)
    .then(getSpammer)
    .then(() => console.log(spammers));

function getSpammer(user) {

    if (user === null) {
        return;
    }

    if (spammers.length === 10) {
        return;
    }

    return isSpammer(user)
        .then((isSpammer) => isSpammer && spammers.push(user))
        .catch(onSpammerCheckErrorHandler)
        .then(getUser)
        .catch(onGetUserErrorHandler)
        .then(getSpammer);
}

function onSpammerCheckErrorHandler(error) {
    console.log(error);
}

function onGetUserErrorHandler(error) {
    console.log(error);
}

let users = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19][Symbol.iterator]();

function getUser() {
    return new Promise(function (resolve) {
        setTimeout(function () {
            let user = users.next();
            resolve(user.done ? null : user.value)
        }, 100)
    });
}

function isSpammer(user) {
    return new Promise(function (resolve) {
        setTimeout(function () {
            resolve(user > 12)
        }, 100)
    });
}