Emit Event

/**
 * Emit a custom event.
 *
 * @source Chris Ferdinandi, https://gomakethings.com
 * @param  {String} type   The event type
 * @param  {Object} detail Any details to pass along with the event
 * @param  {Node}   elem   The element to attach the event to
 */
function emitEvent (type, detail = {}, elem = document) {

    // Make sure there's an event type
    if (!type) return;

    // Create a new event
    let event = new CustomEvent(type, {
        bubbles: true,
        cancelable: true,
        detail: detail
    });

    // Dispatch the event
    return elem.dispatchEvent(event);
}