Check if element has child

I have the following DOM tree (simplified)

<div class=row-0>...</div>
<div class=row-1>
  <div class=container>
    <div class=panel>...</div>
  </div>
</div>
<div class=row-2>...</div>
<div class=row-3>
  <div class=container>
    <div class=panel>...</div>
    <div class=drawer>...</div>
  </div>
</div>
<div class=row-4>...</div>

As you can see, all elements have a panel class=panel but not all elements have a drawer class=drawer. I am iterating through the elements as follows:

const events = Selector('[class^="row-"]');
const eventCount = await events.count;

for (let i = 0; i < eventCount; i++) {
  const event = await events.nth(i);
  // Here's where I want to check if the event (class=row-x) has a child element class=drawer
  const drawer = await Selector(event).child('class["drawer"]')
  if (await drawer.exists) {
    console.log('Found drawer')
  }
}

I can successfully iterate through all the rows, but I cannot detect if a certain event has a drawer. I tried to follow the logic from this answer.

How can I perform this logic?