Node S3Client Error - input.useDualstackEndpoint is not a function

Question

I'm trying to get a list of files within an S3 folder in a lambda written in typescript. I've added the following dependencies to my package.json.

"@aws-sdk/client-s3": "^3.41.0",
"@aws-sdk/node-http-handler": "^3.40.0",

I then use the S3 client like this:

const client = new S3Client({
    maxAttempts: 3,
    retryMode: 'STANDARD',
    region: getAwsRegion(),
    requestHandler: new NodeHttpHandler({
      connectionTimeout: 3000, // Timeout requests after 3 seconds
      socketTimeout: 5000, // Close socket after 5 seconds
    }),
    credentials: args.credentials,
  });


  const listObjectsCommand = new ListObjectsCommand({
    Bucket: args.bucketName,
    Delimiter: '/',
    Prefix: pathToPartition,
  });
  const objects = await client.send(listObjectsCommand);

I've tried using ListObjectsV2Command as well, but it has the same error. The error is:

TypeError: input.useDualstackEndpoint is not a function\n at Object.getEndpointFromRegion (/var/task/node_modules/<my_module>/node_modules/@aws-sdk/config-resolver/dist-cjs/endpointsConfig/utils/getEndpointFromRegion.js:12:46)\n at processTicksAndRejections (internal/process/task_queues.js:95:5)\n at async Object.serializeAws_restXmlListObjectsCommand (/var/task/node_modules/<my_module>/node_modules/@aws-sdk/client-s3/dist/cjs/protocols/Aws_restXml.js:2386:68)\n at async /var/task/node_modules/<my_module>/node_modules/@aws-sdk/middleware-serde/dist-cjs/serializerMiddleware.js:5:21 .

Any idea what I may be doing wrong?

asm · Accepted Answer · 2022-01-04 20:37:41Z

2

This happened due to a mismatch is the aws-sdk version used in the package.json I had and the package.json of a dependency. Updating it to be the same version fixed this!

answered Jan 4, 2022 at 20:37

asm

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Comments

fedonev · Accepted Answer · 2021-11-30 21:29:34Z

0

Here is a working minimal version of your function. Get this simple version working first and incrementally add complexity.

AWS_REGION is a lambda-provided env var. I defined the BUCKET env var. You can pass the bucket name with the event payload (or, to begin with, hard-code it to minimise sources of error).

import { S3Client, ListObjectsCommand} from '@aws-sdk/client-s3';

const client = new S3Client({ region: process.env.AWS_REGION });
const bucket = process.env.BUCKET;

export async function handler(): Promise<void> {
  const cmd = new ListObjectsCommand({
    Bucket: bucket
  });

  const objects = await client.send(cmd);

  console.log(objects)
}

answered Nov 30, 2021 at 21:29

fedonev

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2 Comments

asm Over a year ago

Yes, the getAwsRegion() function gets it using the environment variable AWS_REGION as well, just with some logging. I've tried the simple command with only the bucket path earlier but it failed with the exact same error

fedonev Over a year ago

That's disappointing. I cannot replicate your error. You need to do some debugging: Try it with another bucket. Try another SDK command (like list buckets to see if the Client is working. Try running aws s3 listObjects using the AWS CLI from your computer. You get the picture.

rishikarri · Accepted Answer · 2025-01-11 20:48:19Z

0

I ran into a similar error: "useDualstackEndpoint: options.useDualstackEndpoint ?? false"

The problem: I was using a node version that was NOT compatible with aws sdk JavaScript v3.

Running nvm use 18 and then rerunning my script fixed it

answered Jan 11 at 20:48

rishikarri

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