Function withElementCollector

specs/helper.js:63–76

(work)

 * all the elements (built with `createHTMLElement`) after a test.
 */
export function withElementCollector(work) {
  let r;
  let poolIndex = elementPool.length;
  elementPool[poolIndex] = [];
  try {
    r = work();
  } finally {
    drainPool(elementPool[poolIndex]);
    elementPool = elementPool.slice(
      0, poolIndex
    );
  }
  return r;
}

/**
 * Polyfill for String.includes on some node versions.