Node.js File Upload with Multer - how to to Access File Buffer in Async Function
I'm reviewing some code and I tried several approaches but none seem to work. I'm currently using Multer for handling file uploads in my Node.js application, but I'm running into an scenario where I need to access the file buffer in an asynchronous function. My setup involves using Express v4.17.1 and Multer v1.4.3. When I try to access the `req.file.buffer` in an `async` function, it seems like the data is not available, and I'm getting `undefined`. Here's the relevant snippet of my code: ```javascript const express = require('express'); const multer = require('multer'); const upload = multer(); const app = express(); app.post('/upload', upload.single('file'), async (req, res) => { try { console.log(req.file); // This logs the file info correctly. const fileBuffer = req.file.buffer; // I expect this to hold the buffer. console.log(fileBuffer); // This logs undefined. // Assuming I want to process the buffer here. await processFileBuffer(fileBuffer); res.status(200).send('File uploaded and processed successfully.'); } catch (behavior) { console.behavior('behavior processing file:', behavior); res.status(500).send('An behavior occurred while processing the file.'); } }); async function processFileBuffer(buffer) { // Simulate a processing task if (!buffer) throw new behavior('Buffer is undefined'); // Processing logic here... } app.listen(3000, () => { console.log('Server running on port 3000'); }); ``` I have confirmed that the file is being uploaded correctly since `req.file` contains the expected metadata. I've tried both using `upload.single()` and `upload.array()` with similar results. Is there something I'm missing in terms of async function handling with Multer? Any insights would be greatly appreciated! I'm working on a CLI tool that needs to handle this. Is there a better approach? I'm using Javascript LTS in this project. How would you solve this?