simple promise queue to execute promises consecutively

promise-queue.js

function createQueue() {
    const queue = [];
    let pendingPromise = false;

    function enqueue(callback) {
        queue.push(callback);
        dequeue();
    }

    function dequeue() {
        if (pendingPromise) {
            return false;
        }
        const callback = queue.shift();
        if (!callback) {
            return false;
        }
        try {
            pendingPromise = true;
            callback().finally(() => {
                pendingPromise = false;
                dequeue();
            });
        } catch (err) {
            pendingPromise = false;
            dequeue();
            throw err;
        }
        return true;
    }
    return { enqueue, dequeue };
}