app.use() requires a middleware function in express-edge - node.js

Question

I'm creating blog using node js and following this tutorial https://vegibit.com/node-js-blog-tutorial/ but now I stuck it gives me error on app.use('express-edge') here is my code
const path = require('path');
const expressEdge = require('express-edge');
const express = require('express');
const mongoose = require('mongoose');
const bodyParser = require('body-parser');
const app = new express();
mongoose.connect('mongodb://localhost:27017/node-blog', {
useNewUrlParser: true
})
.then(() => 'You are now connected to Mongo!')
.catch(err => console.error('Something went wrong', err))
app.use(express.static('public'));
app.use(expressEdge);
app.set('views', __dirname + '/views');
app.use(bodyParser.json())
app.use(bodyParser.urlencoded({
extended: true
}));
app.get('/', (req, res) => {
res.render('index');
});
app.get('/posts/new', (req, res) => {
res.render('create')
});
app.post('/posts/store', (req, res) => {
console.log(req.body)
res.redirect('/')
});
app.listen(4000, () => {
console.log('App listening on port 4000')
});
and my error looks like
[nodemon] starting node index.js
C:\Users\91762\Desktop\Blog\node_modules\express\lib\application.js:210
throw new TypeError('app.use() requires a middleware function')
^
TypeError: app.use() requires a middleware function
at Function.use (C:\Users\91762\Desktop\Blog\node_modules\express\lib\application.js:210:11)
at Object. (C:\Users\91762\Desktop\Blog\index.js:16:5)
at Module._compile (internal/modules/cjs/loader.js:945:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:962:10)
at Module.load (internal/modules/cjs/loader.js:798:32)
at Function.Module._load (internal/modules/cjs/loader.js:711:12)
at Function.Module.runMain (internal/modules/cjs/loader.js:1014:10)
at internal/main/run_main_module.js:17:11
[nodemon] app crashed - waiting for file changes before starting...

Answer 1

Maybe the tutorial is out of date, newest version of express-edge does not export edge engine as default export, the package exports a object what includes config, engine.
You can follow package document if your node version support object destructuring.
...
const { engine } = require('express-edge');
...
app.use(engine);
...
Or, just change a little in your code:
app.use(expressEdge.engine); // instead of app.use(expressEdge);

Answer 2

Use it like a handler is the best choice.
app.use(expressEdge.engine);