Simple Uploader

config.js

module.exports = {
    PORT: process.env.PORT || 3000
}

index.js

require('dotenv').config();
const express = require('express');
const uploader = require('./uploader');
const {PORT} = require('./config');
const app = express();

app.use(express.json());
app.use(express.static('public'));

app.get('/', (req, res) => {
  res.sendFile(__dirname + '/public/index.html');
});

app.post('/upload', uploader.fields([{name: 'photo'}]), (req, res) => {
  if(req.files.photo){
    res.json({photo: req.files.photo[0].location});
  else{
    res.status(500).json({error: 'Error when uploading');
  }
});
    
app.listen(PORT, () => `Servidor corriendo en ${PORT}`);

uploader.js

const multer = require('multer');
const slugify = require('slugify');

const storage = multer.diskStorage({
  destination: (req, file, cb) => {
    cb(null, 'public/uploads');
  },
  filename: (req, file, cb) => {
    const splittedName = file.originalname.split('.');
    const extension = splittedName[splittedName.length - 1];
    const base64Name =  Buffer.from(file.originalname).toString('base64');
    cb(null, `${base64Name}-${Date.now()}.${extension}`);
  }
});

module.exports = multer({ storage });