Loading environment variables with dotenv still returns undefined

Question

I'm at a loss here. My .env file is in my root directory, as instructed. I've tried this by way of both require('dotenv').config() and import dotenv from 'dotenv', followed by dotenv.config(). I've tried passing config an absolute path, as you will see. Trying to console log the environment variables always returns undefined. I tried checking for dotenv.error, as you will also see, and the condition doesn't trigger.

All I see is undefined. It's as if my .env file doesn't even exist.

Here is my code in its current state. Any help would be appreciated.

import express from "express";
import cors from "cors";
import multer from "multer";
import AWS, { PutObjectCommandOutput, S3, S3ClientConfig } from "@aws-sdk/client-s3";
import { createReadStream } from "fs";
import path from 'path';

const dotenvAbsolutePath = path.join(__dirname, '.env')

const app = express();
const port = 5000;
// require('dotenv').config();
const dotenv = require('dotenv').config({
  path: dotenvAbsolutePath,
});
if (dotenv.error) {
  console.log(`DOTENV ERROR: ${dotenv.error.message}`);
  throw dotenv.error;
}

const keys = {
  key: process.env.AWS_ACCESS_KEY_ID,
  secret: process.env.AWS_SECRET_KEY,
  region: process.env.AWS_REGION
};
console.log(dotenv);

const upload = multer({
  storage: multer.diskStorage({ destination: "./tmp" }),
});

const s3 = new S3({
  credentials: { accessKeyId: keys.key!, secretAccessKey: keys.secret! },
  region: keys.region!
});

app.use(cors());

app.post("/", upload.single("pdf_upload"), async (req, res) => {
  let fileName: string | undefined;
  // let fileBuffer: Buffer | undefined;
  let uploadResponse: PutObjectCommandOutput | undefined;

  if (req.file) {
    fileName = req.file.originalname;
    // fileBuffer = req.file.buffer
    console.log("HTTP Request Received");
    const fileReadStream = createReadStream(req.file!.path).on(
      "ready",
      async () => {
        try {
          console.log("Stream is Readable");
          console.log(fileReadStream.bytesRead);
          uploadResponse = await s3.putObject({
            Bucket: "fiberpunch-test",
            Key: fileName,
            Body: fileReadStream,
          });
          res.header("Access-Control-Allow-Origin", "*");
          res
            .send({ file: { ETag: uploadResponse.ETag, Key: fileName } })
            .status(200);
        } catch (err: any) {
          console.log("Upload Error: ", err.message);
          res.sendStatus(500);
          console.log(fileReadStream.bytesRead);
        }
      }
    );
  }
});

try {
  app.listen(port);
  console.log(`listening at port ${port}`);
} catch (err) {
  console.log("ERROR SETTING UP SERVER");
}

Answer 1

Okay, I figured it out. First of all, I was working in typescript and forgot to compile. Second, the absolute path to the .env file was incorrect. After I did that, the environmental variable pull just fine.

I'm running into a new error, though:

Upload Error:  The bucket you are attempting to access must be addressed using the specified endpoint. Please send all future requests to this endpoint.

I'll post another question if I can't figure this one out. Thanks, everyone.