How to delete the found entry from the database?

Question

JavaScript

The code below displays the commands field from the collection. Help form it so that, before the output, the res.statusfound record is deleted from the database and only then displayed.

Commands.find({ 'device': req.body.id })
  .exec()
  .then(cmd => {
    if(cmd.length = 1){
        res.status(200).json({
          "commands": cmd[0].commands,
          "result":"ok",
        });
    }
  })
  .catch(err => {
    console.log(err);
    res.status(500).json({
      error: err
    });
  });