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Emit a custom event.

 * Emit a custom event
 * (c) 2021 Chris Ferdinandi, MIT License,
 * @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);