DynamoDB Document client - DELETE operation not working

[IkKan]

This is a Bug Report

Description

• Adding #LambdaPowertoolsContext in Document client query on DELETE stringset item results with query being malformed.*
• Steps to reproduce:

      const DynamoDB = require('@dazn/lambda-powertools-dynamodb-client')
       let teamSet = DynamoDB.createSet([teamId])
       try {

          let result = await DynamoDB.update({
            TableName: userTableName,
            Key: {
              accountId: accountId,  
              id: userId
            },
            UpdateExpression: "DELETE #memberOf :t",
            ExpressionAttributeNames: {
              "#memberOf" : "memberOf"
            },
            ExpressionAttributeValues: {
                ":t" : teamSet
            },  
            ReturnValues: "UPDATED_NEW"
          }).promise();

        console.log(result)
        } catch(err){
          Log.error('Caught error while updating', {}, err);
          throw Error('Update operation has failed');
        } 

• Error received:
  {"message":"Invalid UpdateExpression: Syntax error; token: \"undefined\", near: \":t undefined SET\"","code":"ValidationException"}
• Debug log

Serverless: [AWS dynamodb 400 0.181s 0 retries] updateItem({
TableName: 'XC_Users',
Key: {
accountId: { S: '8500fe56-d136-496c-ba51-12d40bac1f8c' },
id: { S: 'd1412d82-b234-4cbf-a814-81fe29daaf05' }
},
UpdateExpression: 'DELETE #memberOf :t undefined SET #LambdaPowertoolsContext = :LambdaPowertoolsContext',
ExpressionAttributeNames: {
'#memberOf': 'memberOf',
'#LambdaPowertoolsContext': 'context'
},
ExpressionAttributeValues: {
':t': { SS: [ '53e003b6-d907-404d-bc6e-aa4b9ed2b7ef', [length]: 1 ] },
':LambdaPowertoolsContext': {
M: {
'x-correlation-id': { S: '1ec7a9c8-6860-4501-80a8-cc0c5f59b30b' },
awsRequestId: { S: '1ec7a9c8-6860-4501-80a8-cc0c5f59b30b' },
'debug-log-enabled': { S: 'true' }
}
}
},
ReturnValues: 'UPDATED_NEW'
})

Additional Data

• Which powertool package are you using?: @dazn/lambda-powertools-dynamodb-client
• Which version are you using?: 1.28.1
• Middy engine version you're using: 2.5.3
• Operating System: Fedora 35 / AWS Lamda nodejs14.x
• Stack Trace:
• Provider Error messages: