How to fix DynamoDB Local: Unable to load the AWS SDK for Node.js in DynamoDB

docker run -d --name dynamodb-local -p 8000:8000 amazon/dynamodb-local

java -Djava.library.path=./DynamoDBLocal_lib -jar DynamoDBLocal.jar -sharedDb

npm install -g local-dynamo
local-dynamo

curl http://127.0.0.1:8000/
# or
curl http://localhost:8000/

npm install @aws-sdk/client-dynamodb @aws-sdk/lib-dynamodb

npm ls @aws-sdk/client-dynamodb
npm ls @aws-sdk/lib-dynamodb

npm uninstall aws-sdk
npm install @aws-sdk/client-dynamodb @aws-sdk/lib-dynamodb

{
  "dependencies": {
    "@aws-sdk/client-dynamodb": "^3.x.x",
    "@aws-sdk/lib-dynamodb": "^3.x.x"
  }
}

const AWS = require('aws-sdk');
const dynamodb = new AWS.DynamoDB({
  region: 'local',
  endpoint: 'http://localhost:8000'
});

import { DynamoDBClient } from '@aws-sdk/client-dynamodb';
import { DynamoDBDocumentClient } from '@aws-sdk/lib-dynamodb';

const client = new DynamoDBClient({
  region: 'local',
  endpoint: 'http://localhost:8000'
});

const docClient = DynamoDBDocumentClient.from(client);

import { DynamoDBClient } from '@aws-sdk/client-dynamodb';
import { DynamoDBDocumentClient } from '@aws-sdk/lib-dynamodb';

const dynamoDBClient = new DynamoDBClient({
  region: 'local',
  endpoint: 'http://localhost:8000',
});

const docClient = DynamoDBDocumentClient.from(dynamoDBClient);

import { DynamoDBClient } from '@aws-sdk/client-dynamodb';

const client = new DynamoDBClient({
  region: 'local',
  endpoint: 'http://localhost:8000',
  credentials: {
    accessKeyId: 'dummy',
    secretAccessKey: 'dummy'
  }
});

.env
AWS_ACCESS_KEY_ID=dummy
AWS_SECRET_ACCESS_KEY=dummy
AWS_REGION=local

const client = new DynamoDBClient({
  region: process.env.AWS_REGION || 'local',
  endpoint: 'http://localhost:8000',
  credentials: {
    accessKeyId: process.env.AWS_ACCESS_KEY_ID || 'dummy',
    secretAccessKey: process.env.AWS_SECRET_ACCESS_KEY || 'dummy'
  }
});

const client = new DynamoDBClient({
  endpoint: 'http://localhost:8000'
});

const client = new DynamoDBClient({
  endpoint: 'http://127.0.0.1:8000'
});

const client = new DynamoDBClient({
  endpoint: 'http://localhost:8000',
  // Add custom fetch with IPv4 preference
});

// test-dynamodb.js
import { DynamoDBClient, ListTablesCommand } from '@aws-sdk/client-dynamodb';

const client = new DynamoDBClient({
  region: 'local',
  endpoint: 'http://127.0.0.1:8000',
  credentials: {
    accessKeyId: 'dummy',
    secretAccessKey: 'dummy'
  }
});

async function testConnection() {
  try {
    const command = new ListTablesCommand({});
    const response = await client.send(command);
    console.log('✓ Connection successful!');
    console.log('Tables:', response.TableNames || []);
  } catch (error) {
    console.error('✗ Connection failed:', error.message);
    process.exit(1);
  }
}

testConnection();

node test-dynamodb.js

# Check Node.js version
node --version

# Check AWS SDK v3 version
npm ls @aws-sdk/client-dynamodb

# Check if aws-sdk v2 is still installed
npm ls aws-sdk

npm uninstall aws-sdk
npm install @aws-sdk/client-dynamodb @aws-sdk/lib-dynamodb
npm ci

import { DynamoDBClient } from '@aws-sdk/client-dynamodb';
import { DynamoDBDocumentClient, GetCommand, PutCommand } from '@aws-sdk/lib-dynamodb';

const client = new DynamoDBClient({
  region: 'local',
  endpoint: 'http://127.0.0.1:8000',
  credentials: {
    accessKeyId: 'dummy',
    secretAccessKey: 'dummy'
  }
});

const docClient = DynamoDBDocumentClient.from(client);

// Now use docClient with native JavaScript objects
const putCommand = new PutCommand({
  TableName: 'Users',
  Item: {
    id: '123',
    name: 'John'
  }
});

await docClient.send(putCommand);

// src/lib/dynamodb.js
import { DynamoDBClient } from '@aws-sdk/client-dynamodb';
import { DynamoDBDocumentClient } from '@aws-sdk/lib-dynamodb';

const isLocal = process.env.NODE_ENV === 'development' || process.env.DYNAMODB_LOCAL === 'true';

const clientConfig = {
  region: process.env.AWS_REGION || 'us-east-1',
  ...(isLocal && {
    endpoint: 'http://127.0.0.1:8000',
    credentials: {
      accessKeyId: 'dummy',
      secretAccessKey: 'dummy'
    }
  })
};

const client = new DynamoDBClient(clientConfig);
const docClient = DynamoDBDocumentClient.from(client);

export { client, docClient };

import { docClient } from './lib/dynamodb.js';
import { GetCommand } from '@aws-sdk/lib-dynamodb';

const result = await docClient.send(new GetCommand({
  TableName: 'Users',
  Key: { id: '123' }
}));