index.js

const express = require('express')
const multer = require('multer')

const app = express()

const upload = multer({
    storage: multer.memoryStorage()
})

app.post('/upload', upload.single('file'), (req, res) => {
    console.log("File upload API")
}

app.listen(5000, () => {
    console.log('🚀Server listening on port 5000')
})