Find document index/position with MongoDB

findDocumentIndex.js

async function findDocumentIndex({ _id, collection, conditions, sort }) => {
  const data = await db.collection(collection).aggregate([{
    $match: conditions
  }, {
    $sort: sort
  }, {
    $group: {
      _id: null,
      positions: {
        $push: "$_id"
      }
    }
  }, {
    $project: {
      position: {
        $indexOfArray: ["$positions", _id]
      }
    }
  }]).toArray()

  if (data.length > 0) {
    const { position } = data[0]

    return position
  } else {
    throw new Error('Invalid query')
  }
}

// Usage
const position = await findDocumentIndex({
  _id: new ObjectId(userId),
  collection: 'users',
  conditions: {
    score: {
      $ne: 0
    }
  },
  sort: {
    score: -1
  }
})