DynamoDB DeleteItem apparently not working - no error given

Question

I'm using put and get without problems, but when it comes to delete, nothing happens. Here's my code:

async function resetUserIdDB(userId) {
  let params = {
    TableName: 'TableName',
    "Key": {
      "userId": {
        "S": userId.toString()
      }
    }
  };
  try {
    const dbResponse = await ddb.deleteItem(params).promise();
    console.log(`dbresponse has params of ${JSON.stringify(params)} and response of ${JSON.stringify(dbResponse)}`);
    if (dbResponse.Item) {
      console.log(`deleted row with userId of ${userId}`);
      return (dbResponse);
    }
  } catch (err) {
      console.log(`user reset failed with ${err}`);
    throw new Error(`failed to reset because of ${err}`);
  }
}

The params all look fine, but I just get an empty response, and no error, but no deletion either. I'm using the same .promise() on all my other dynamodb actions.

Any ideas?

Answer 1

I just ran into the same problem. It seems like some of the SDK functions don't actually work unless you pass them a callback parameter, even though it's optional. Even a function that does nothing seems to make it work. i.e.

const dbResponse = await ddb.deleteItem(params, () => {}).promise();