Why TypeError: dynamodb.deleteItem is not a function?

Question

I am making aws serverless application with classic crud operations. Lambdas get and update works properly. But I have a issues with delete...

    const key = event.pathParameters.id;
    const dynamodb = new AWS.DynamoDB.DocumentClient();
    const params = {
      TableName: process.env.DYNAMODB_CUSTOMER_TABLE,
      Key: {
        primaryKey: key,
      },
    };

    const result = await dynamodb.deleteItem(params).promise();

It fails with "TypeError: dynamodb.deleteItem is not a function".

dynamodb initialization same as in working functions and I can print it. I provided proper rights: - 'dynamodb:DeleteItem'

What I did wrong?

Answer 1

You are initializing a document client here:

const dynamodb = new AWS.DynamoDB.DocumentClient();

Document client has a delete function. From the docs:

delete(params, callback) ⇒ AWS.Request: Deletes a single item in a table by primary key by delegating to AWS.DynamoDB.deleteItem()

If you want to have an actual deleteItem function, you would want to initialize your DynamoDB client as follows:

const dynamodb = new AWS.DynamoDB();
// ...
const result = await dynamodb.deleteItem(params).promise();