"TypeError: Object.defineProperty called on non-object",
 " at defineProperty (<anonymous>)",
 " at __name (/var/task/origin-response.js:40:19710)",
 " at <static_initializer> (/var/task/origin-response.js:40:26354)",
 " at node_modules/@aws-sdk/middleware-sdk-s3/dist-cjs/index.js (/var/task/origin-response.js:40:26300)",
 " at /var/task/origin-response.js:1:554",
 " at node_modules/@aws-sdk/client-s3/dist-cjs/index.js (/var/task/origin-response.js:58:70715)",
 " at /var/task/origin-response.js:1:554",
 " at Object.<anonymous> (/var/task/origin-response.js:58:426696)",
 " at Module._compile (node:internal/modules/cjs/loader:1364:14)",
 " at Module._extensions..js (node:internal/modules/cjs/loader:1422:10)"

import { CloudFrontResponseEvent, CloudFrontResponse } from "aws-lambda";
import { GetObjectCommand, S3Client } from "@aws-sdk/client-s3";
const s3 = new S3Client({
 region: process.env.BUCKET_REGION,
});
const OBJECT = process.env.OBJECT;
const S3_BUCKET = process.env.S3_BUCKET;
export const handler = async (
 event: CloudFrontResponseEvent
): Promise<CloudFrontResponse> => {
 const response = event.Records[0].cf.response;
 response.headers = response.headers || {};
 let result = "";
 }
 try {
 const params = { Bucket: S3_BUCKET, Key: OBJECT };
 const s3Object = await s3.send(new GetObjectCommand(params));
 if (!s3Object.Body) {
 throw new Error("The file is empty or missing");
 }
 result += s3Object.Body.toString();
 console.log("the file retrieved:", result);
 response.headers["x-custom-header"] = [
 { key: "X-Custom-Header", value: result },
 ];
 } catch (error) {
 console.error("Error fetching the file or adding header:", error);
 throw error;
 }
 return response;
};