app.use () requires a middleware function node.js code example
Example: TypeError: app.use() requires a middleware function
const express = require('express');
const bodyParser = require('body-parser');
const cookieParser = require('cookie-parser');
const app = express();
app.use(bodyParser.urlencoded({extended: false}));
app.use(cookieParser());
// tells express which template engine to use
app.set('view engine', 'pug');
const routes = require('./routes');
app.use(routes);
app.use((req, res, next) => {
console.log('Hello');
next();
});
app.use((req, res, next) => {
console.log("World");
next();
});
app.use((req, res, next) => {
const err = new Error('Not Found');
err.status = 404;
next(err);
});
app.use((err, req, res, next) => {
res.locals.error = err;
res.status(err.status);
res.render('error');
});
app.listen(3000, () => {
console.log('The application is running on localhost 3000');
});