Problem Statement/Rationale

Writing mongosh script, which should execute qeuries for most of collections in my db, some aggregations need to be re-used, so put them into function, but when script executed and function called can see error <unknown>.collection is not a function. Converting function to arrow function does not help. Passing db as function argument make error db.collection is not a function.

Please be sure to attach relevant logs with any sensitive data redacted.

TypeError: <unknown>.collection is not a function
TypeError: db.collection is not a function

Steps to Reproduce

```js
function getIds (collectionName, workspaceId, outputObjectIds = false) {
  const [result] = db
    .collection(collectionName)
    .aggregate([
      {
        $match:

,
      },
      {
        $group: {
          _id: null,
          ids: {
            $push: outputObjectIds
              ? '$_id'
              :

,
          },
        },
      },
    ])
    .toArray()

  return result?.ids ?? []
}

getIds('projects', someObjectId)
```

Expected Results

Aggregation inside function executed successfully as it happens in top level, and result returned

Actual Results

TypeError: <unknown>.collection is not a function
TypeError: db.collection is not a function

Also would like to ask, async/await seems not to be working, my guess is mongosh using something like fibers library (at least pretty similar to how meteor JS framework make async functions executed writter as sync code). Is there way to make my custom function same as mongodb related async commands written sync but actually executed async?