/**
 * Adds an event listener to the specified target element(s) for the given event(s), and returns a function to remove it.
 * @param target The target element(s) to add the event listener to.
 * @param event The event(s) to listen for.
 * @param handler The function to be called when the event is triggered.
 * @param options An optional object that specifies characteristics about the event listener.
 * @returns A function that removes the event listener from the target element(s).
 */
export function addEventListener(target, event, handler, options) {
    const events = Array.isArray(event) ? event : [event];
    // Add the event listener to each specified event for the target element(s).
    events.forEach((_event) => target.addEventListener(_event, handler, options));
    // Return a function that removes the event listener from the target element(s).
    return () => {
        events.forEach((_event) => target.removeEventListener(_event, handler, options));
    };
}