const wait = milliseconds => {
    return new Promise(resolve => {
        setTimeout(() => {
            resolve();
        }, milliseconds);
    });
}

const init = () => {
    wait(1000).then(() => {
        console.log("Waited 1 second");
    });
    fetch("https://jsdemo-3f387-default-rtdb.europe-west1.firebasedatabase.app/notifications/new.json")
        .then(response => response.json())
        .then(data => {
            console.log(data);
        });
}

init();

const init = async () => {
    // ❌ This is unexpectedly delaying the fetch call too
    await wait(1000);
    console.log("Waited 1 second");
    const response = await fetch("https://jsdemo-3f387-default-rtdb.europe-west1.firebasedatabase.app/notifications/new.json");
    const data = await response.json();
    console.log(data);
}

init();