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333912 (3) [Avatar] Offline
It seems like the code snippet and the paragraph that follows it do not add up:

Create a file named ./middleware/messages.js and add the following code:
const express = require('express');

function message(req) {
return (msg, type) => {
type = type || 'info';
let sess = req.session;
sess.messages = sess.messages || [];
sess.messages.push({ type: type, string: msg });
The res.message function provides a way to add messages to a session variable from any Express request. The express.response object is the prototype that Express uses for the response objects.