server.js

// Read to end first, then solve one by one.

var express = require('express');

// #0. Load 'multer' here.

// #1. Use 'uploads' folder for multer's upload here.

var app = express();

// #6. Tune Express to serve static files from '/unloads' folder.
// #7. Choose a file in 'uploads', copy it's name, navigate to http://localhost:3000/uploads/chosen_file_name

// #5. Fix the line below to receive a sigle file from field named 'avatar' and
// look at the terminal.
app.post('/profile', upload.any(), function (req, res, next) {    
    // #2.a Add code here to return received file's info as JSON back to the client.
    // #2.b Log file's info to the console here.
    
    // #3.a Start the server in one terminal: npm start
    // #3.b Run in another terminal to test posting data:
    //   curl -v --form "file=@test.txt" http://127.0.0.1:3000/profile
    // #3.c Read messages in the console in the server's terminal.
    
    // #4. Post a file with the form in index.html
})

app.listen(3000, function () {
    console.log('Your file app is listening on port 3000!');
});