Does Express Work With Cloudflare R2?

import express from 'express';
import { S3Client, PutObjectCommand, GetObjectCommand } from '@aws-sdk/client-s3';
import { getSignedUrl } from '@aws-sdk/s3-request-presigner';

const app = express();

const s3Client = new S3Client({
  region: 'auto',
  endpoint: `https://${process.env.R2_ACCOUNT_ID}.r2.cloudflarestorage.com`,
  credentials: {
    accessKeyId: process.env.R2_ACCESS_KEY,
    secretAccessKey: process.env.R2_SECRET_KEY,
  },
  forcePathStyle: true,
});

app.post('/upload', async (req, res) => {
  const filename = `uploads/${Date.now()}-file.txt`;
  const uploadCmd = new PutObjectCommand({
    Bucket: process.env.R2_BUCKET,
    Key: filename,
    Body: req,
  });
  await s3Client.send(uploadCmd);
  res.json({ url: `${process.env.R2_PUBLIC_URL}/${filename}` });
});

app.get('/download/:key', async (req, res) => {
  const url = await getSignedUrl(s3Client, 
    new GetObjectCommand({ Bucket: process.env.R2_BUCKET, Key: req.params.key }),
    { expiresIn: 3600 }
  );
  res.redirect(url);
});

app.listen(3000);