I am trying to invoke a lambda function on AWS but I am getting the error: “Error: Cannot find module ‘index’nRequire stack:n- /var/runtime/index.mjs”

Folder structure:
enter image description here

index.ts Code:

// SPDX-License-Identifier: MIT-0

import { APIGatewayProxyResult } from 'aws-lambda';
import * as AWSCore from 'aws-sdk';
import * as AWSXRay from 'aws-xray-sdk-core';

let AWS;

const ddbOptions: AWSCore.DynamoDB.Types.ClientConfiguration = {
  apiVersion: '2012-08-10'
};

// https://github.com/awslabs/aws-sam-cli/issues/217
if (process.env.AWS_SAM_LOCAL) {
  AWS = AWSCore;
  ddbOptions.endpoint = 'http://dynamodb:8000';
} else {
  AWS = AWSXRay.captureAWS(AWSCore);
}

async function handler(): Promise<APIGatewayProxyResult> {
  let response: APIGatewayProxyResult;
  try {
    const client = new AWS.DynamoDB(ddbOptions);

    const params: AWS.DynamoDB.Types.ScanInput = {
      TableName: process.env.TABLE || 'books'
    };

    const result: AWS.DynamoDB.Types.ScanOutput = await client.scan(params).promise();

    const bookDtos = result.Items?.map(item => ({
      isbn: item['isbn'].S,
      title: item['title'].S,
      year: parseInt(item['year'].N!, 10),
      author: item['author'].S,
      publisher: item['publisher'].S,
      rating: parseInt(item['rating'].N!, 10),
      pages: parseInt(item['pages'].N!, 10)
    }));

    response = {
      statusCode: 200,
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify(bookDtos)
    };

  } catch (e) {
    response = {
      statusCode: 500,
      headers: {},
      body: ''
    };
  }
  return response;
}

export { handler }; 

package.json file:

{
  "name": "books-get-all",
  "version": "1.0.0",
  "description": "Lambda function to get all books",
  "main": "index.js",
  "scripts": {
    "prebuild": "mkdir -p dist",
    "copy-deps": "cp -r node_modules dist",
    "build-dev": "tsc",
    "build": "npm run prebuild && npm i && tsc && npm prune --production && npm run copy-deps",
    "test": "mocha -r ts-node/register ./tests/*.spec.ts"
  },
  "author": "Amazon Web Services",
  "license": "ISC",
  "devDependencies": {
    "@types/aws-lambda": "^8.10.64",
    "@types/chai": "^4.2.13",
    "@types/mocha": "^8.0.3",
    "@types/node": "^14.0.27",
    "@types/sinon": "^9.0.8",
    "@types/sinon-chai": "^3.2.5",
    "@types/uuid": "^8.3.0",
    "aws-sdk": "^2.1354.0",
    "aws-sdk-mock": "^5.1.0",
    "chai": "^4.2.0",
    "mocha": "^9.1.3",
    "sinon": "^9.2.0",
    "sinon-chai": "^3.5.0",
    "ts-node": "^8.10.2",
    "typescript": "^3.9.7",
    "uuid": "^8.3.1"
  },
  "dependencies": {
    "aws-xray-sdk-core": "^3.1.0"
  }
}

Error:
{
“errorType”: “Runtime.ImportModuleError”,
“errorMessage”: “Error: Cannot find module ‘index’nRequire stack:n- /var/runtime/index.mjs”,
“trace”: [
“Runtime.ImportModuleError: Error: Cannot find module ‘index'”,
“Require stack:”,
“- /var/runtime/index.mjs”,
” at _loadUserApp (file:///var/runtime/index.mjs:1087:17)”,
” at async UserFunction.js.module.exports.load (file:///var/runtime/index.mjs:1119:21)”,
” at async start (file:///var/runtime/index.mjs:1282:23)”,
” at async file:///var/runtime/index.mjs:1288:1″
]
}

I am using Node.js 20.x

I tried changing index.ts to index.js as well as index.mjs but it is not working