Function onceWithEventTarget

test/parallel/test-events-once.js:123–131

()

}

async function onceWithEventTarget() {
  const et = new EventTarget();
  const event = new Event('myevent');
  process.nextTick(() => {
    et.dispatchEvent(event);
  });
  const [ value ] = await once(et, 'myevent');
  assert.strictEqual(value, event);
}

async function onceWithEventTargetError() {
  const et = new EventTarget();