Execute promises map sequentially

Question

I have written a function that is being called in a loop (map) and that function is using promises. Now, I want that function to run synchronously and exit before its next i

Answer 1

(function loop(index) {
    const next = promiseArray[index];
    if (!next) {
        return;
    }
    next.then((response) => {
        // do Something before next
        loop(index + 1);
    }).catch(e => {
        console.error(e);
        loop(index + 1);
    });
})(0 /* startIndex */)