Node.js Beyond The Basics Pdf Guide

// Using a module const greet = require('./greet'); greet('John'); // Output: Hello, John!

describe('Greet function', () => { it('should greet a person', () => { assert.strictEqual(greet('John'), 'Hello, John!'); }); });

passport.serializeUser((user, done) => { done(null, user.username); }); node.js beyond the basics pdf

To start a new Node.js project, create a new directory and initialize a new project using npm init . This will create a package.json file that will be used to manage dependencies and scripts.

app.get('/users', (req, res) => { res.json([{ name: 'John', age: 30 }, { name: 'Jane', age: 25 }]); }); // Using a module const greet = require('

// Using async/await const fs = require('fs').promises; async function readFile() { try { const data = await fs.readFile('file.txt'); console.log(data.toString()); } catch (err) { console.error(err); } }

// Using callbacks fs.readFile('file.txt', (err, data) => { if (err) { console.error(err); } else { console.log(data.toString()); } }); { res.json([{ name: 'John'

const assert = require('assert'); const greet = require('./greet');