/**
 * Runs async work one call at a time, in the order it was asked for.
 *
 * A call made while another is in flight waits for it to finish, succeed or fail, before it starts. A failed
 * call is still reported to its own caller and does not stop the next one.
 */
export const oneAtATime = () => {
    let tail: Promise<unknown> = Promise.resolve();

    return <T>(work: () => Promise<T>): Promise<T> => {
        const run = tail.then(work);
        tail = run.catch(() => undefined);
        return run;
    };
};