Function createHTMLElement

specs/helper.js:44–49

(name)

 * and inside `withElementCollector`.
 */
export function createHTMLElement(name) {
  const e = document.createElement(name);
  elementPool[elementPool.length - 1].push(e);
  e.className = `element_pool_${name}-${++i}`;
  return e;
}

/**
 * Remove every element from its parent and release the pool.