Function setupScratch

test/_util/helpers.jsx:190–195

(id)

 * @returns {HTMLDivElement}
 */
export function setupScratch(id) {
	const scratch = document.createElement('div');
	scratch.id = id || 'scratch';
	(document.body || document.documentElement).appendChild(scratch);
	return scratch;
}

let oldOptions = null;
export function clearOptions() {