├── README.md ├── client ├── public │ ├── robots.txt │ ├── favicon.ico │ ├── logo192.png │ ├── logo512.png │ ├── manifest.json │ └── index.html ├── src │ ├── setupTests.js │ ├── App.test.js │ ├── index.css │ ├── index.js │ ├── App.js │ ├── App.css │ ├── logo.svg │ └── serviceWorker.js └── package.json ├── config ├── default.json └── db.js ├── notes.txt ├── models ├── User.js └── Contact.js ├── middleware └── auth.js ├── server.js ├── package.json ├── routes ├── users.js ├── contacts.js └── auth.js └── .gitignore /README.md: -------------------------------------------------------------------------------- 1 | # contact-keeper 2 | MERN - Mongodb, Express, React, & Node js 3 | -------------------------------------------------------------------------------- /client/public/robots.txt: -------------------------------------------------------------------------------- 1 | # https://www.robotstxt.org/robotstxt.html 2 | User-agent: * 3 | Disallow: 4 | -------------------------------------------------------------------------------- /client/public/favicon.ico: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/xchanmolx/contact-keeper/HEAD/client/public/favicon.ico -------------------------------------------------------------------------------- /client/public/logo192.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/xchanmolx/contact-keeper/HEAD/client/public/logo192.png -------------------------------------------------------------------------------- /client/public/logo512.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/xchanmolx/contact-keeper/HEAD/client/public/logo512.png -------------------------------------------------------------------------------- /config/default.json: -------------------------------------------------------------------------------- 1 | { 2 | "mongoURI": "mongodb+srv://chan123:chan123@contactkeeper-637jj.mongodb.net/test?retryWrites=true&w=majority", 3 | "jwtSecret": "secret" 4 | } -------------------------------------------------------------------------------- /client/src/setupTests.js: -------------------------------------------------------------------------------- 1 | // jest-dom adds custom jest matchers for asserting on DOM nodes. 2 | // allows you to do things like: 3 | // expect(element).toHaveTextContent(/react/i) 4 | // learn more: https://github.com/testing-library/jest-dom 5 | import '@testing-library/jest-dom/extend-expect'; 6 | -------------------------------------------------------------------------------- /client/src/App.test.js: -------------------------------------------------------------------------------- 1 | import React from 'react'; 2 | import { render } from '@testing-library/react'; 3 | import App from './App'; 4 | 5 | test('renders learn react link', () => { 6 | const { getByText } = render(); 7 | const linkElement = getByText(/learn react/i); 8 | expect(linkElement).toBeInTheDocument(); 9 | }); 10 | -------------------------------------------------------------------------------- /client/src/index.css: -------------------------------------------------------------------------------- 1 | body { 2 | margin: 0; 3 | font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 4 | 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', 5 | sans-serif; 6 | -webkit-font-smoothing: antialiased; 7 | -moz-osx-font-smoothing: grayscale; 8 | } 9 | 10 | code { 11 | font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New', 12 | monospace; 13 | } 14 | -------------------------------------------------------------------------------- /notes.txt: -------------------------------------------------------------------------------- 1 | React Front To Back 2019 2 | 3 | Lesson 44. Add Contact Route 4 | Video: 4:39 5 | 6 | Create database username on Mongodb and Cluster name 7 | git clone 8 | npm init -y 9 | "main": "index.js" to "server.js" 10 | npm i express bcryptjs jsonwebtoken config express-validator mongoose 11 | npm i -D nodemon concurrently 12 | create scripts -> "start": "node server.js", 13 | create scripts -> "server": "nodemon server.js" 14 | run a server: npm run server 15 | step 1: create routes 16 | -------------------------------------------------------------------------------- /models/User.js: -------------------------------------------------------------------------------- 1 | const mongoose = require('mongoose'); 2 | 3 | const UserSchema = mongoose.Schema({ 4 | name: { 5 | type: String, 6 | required: true 7 | }, 8 | email: { 9 | type: String, 10 | required: true, 11 | unique: true 12 | }, 13 | password: { 14 | type: String, 15 | required: true 16 | }, 17 | date: { 18 | type: Date, 19 | default: Date.now 20 | }, 21 | }); 22 | 23 | module.exports = mongoose.model('user', UserSchema); -------------------------------------------------------------------------------- /client/src/index.js: -------------------------------------------------------------------------------- 1 | import React from 'react'; 2 | import ReactDOM from 'react-dom'; 3 | import './index.css'; 4 | import App from './App'; 5 | import * as serviceWorker from './serviceWorker'; 6 | 7 | ReactDOM.render( 8 | 9 | 10 | , 11 | document.getElementById('root') 12 | ); 13 | 14 | // If you want your app to work offline and load faster, you can change 15 | // unregister() to register() below. Note this comes with some pitfalls. 16 | // Learn more about service workers: https://bit.ly/CRA-PWA 17 | serviceWorker.unregister(); 18 | -------------------------------------------------------------------------------- /config/db.js: -------------------------------------------------------------------------------- 1 | const mongoose = require('mongoose'); 2 | const config = require('config'); 3 | const db = config.get('mongoURI'); 4 | 5 | const connectDB = async () => { 6 | try { 7 | await mongoose.connect(db, { 8 | useNewUrlParser: true, 9 | useCreateIndex: true, 10 | useFindAndModify: false, 11 | useUnifiedTopology: true 12 | }); 13 | 14 | console.log('MongoDB Connected...'); 15 | } catch (err) { 16 | console.error(err.message); 17 | process.exit(1); 18 | } 19 | }; 20 | 21 | module.exports = connectDB; -------------------------------------------------------------------------------- /client/public/manifest.json: -------------------------------------------------------------------------------- 1 | { 2 | "short_name": "React App", 3 | "name": "Create React App Sample", 4 | "icons": [ 5 | { 6 | "src": "favicon.ico", 7 | "sizes": "64x64 32x32 24x24 16x16", 8 | "type": "image/x-icon" 9 | }, 10 | { 11 | "src": "logo192.png", 12 | "type": "image/png", 13 | "sizes": "192x192" 14 | }, 15 | { 16 | "src": "logo512.png", 17 | "type": "image/png", 18 | "sizes": "512x512" 19 | } 20 | ], 21 | "start_url": ".", 22 | "display": "standalone", 23 | "theme_color": "#000000", 24 | "background_color": "#ffffff" 25 | } 26 | -------------------------------------------------------------------------------- /middleware/auth.js: -------------------------------------------------------------------------------- 1 | const jwt = require('jsonwebtoken'); 2 | const config = require('config'); 3 | 4 | module.exports = function(req, res, next) { 5 | // Get token from header 6 | const token = req.header('x-auth-token'); 7 | 8 | // Check if not token 9 | if(!token) { 10 | return res.status(401).json({ msg: 'No token, authorization denied' }); 11 | } 12 | 13 | try { 14 | const decoded = jwt.verify(token, config.get('jwtSecret')); 15 | 16 | req.user = decoded.user; 17 | next(); 18 | } catch (err) { 19 | res.status(401).json({ msg: 'Token is not valid' }); 20 | } 21 | } -------------------------------------------------------------------------------- /server.js: -------------------------------------------------------------------------------- 1 | const express = require('express'); 2 | const connectDB = require('./config/db'); 3 | 4 | const app = express(); 5 | 6 | // Connect Database 7 | connectDB(); 8 | 9 | // Init Middleware 10 | app.use(express.json({ extended: false })); 11 | 12 | app.get('/', (req, res) => res.json({ msg: 'Welcome to the ContactKeeper API...'})); 13 | 14 | // Define Routes 15 | app.use('/api/users', require('./routes/users')); 16 | app.use('/api/auth', require('./routes/auth')); 17 | app.use('/api/contacts', require('./routes/contacts')); 18 | 19 | const PORT = process.env.PORT || 5000; 20 | 21 | app.listen(PORT, () => console.log(`Server started on port ${PORT}`)); -------------------------------------------------------------------------------- /models/Contact.js: -------------------------------------------------------------------------------- 1 | const mongoose = require('mongoose'); 2 | 3 | const ContactSchema = mongoose.Schema({ 4 | user: { 5 | type: mongoose.Schema.Types.ObjectId, 6 | ref: 'users' 7 | }, 8 | name: { 9 | type: String, 10 | required: true 11 | }, 12 | email: { 13 | type: String, 14 | required: true 15 | }, 16 | phone: { 17 | type: String 18 | }, 19 | type: { 20 | type: String, 21 | default: 'personal' 22 | }, 23 | date: { 24 | type: Date, 25 | default: Date.now 26 | }, 27 | }); 28 | 29 | module.exports = mongoose.model('contact', ContactSchema); -------------------------------------------------------------------------------- /client/src/App.js: -------------------------------------------------------------------------------- 1 | import React from 'react'; 2 | import logo from './logo.svg'; 3 | import './App.css'; 4 | 5 | function App() { 6 | return ( 7 |
8 |
9 | logo 10 |

11 | Edit src/App.js and save to reload. 12 |

13 | 19 | Learn React 20 | 21 |
22 |
23 | ); 24 | } 25 | 26 | export default App; 27 | -------------------------------------------------------------------------------- /client/src/App.css: -------------------------------------------------------------------------------- 1 | .App { 2 | text-align: center; 3 | } 4 | 5 | .App-logo { 6 | height: 40vmin; 7 | pointer-events: none; 8 | } 9 | 10 | @media (prefers-reduced-motion: no-preference) { 11 | .App-logo { 12 | animation: App-logo-spin infinite 20s linear; 13 | } 14 | } 15 | 16 | .App-header { 17 | background-color: #282c34; 18 | min-height: 100vh; 19 | display: flex; 20 | flex-direction: column; 21 | align-items: center; 22 | justify-content: center; 23 | font-size: calc(10px + 2vmin); 24 | color: white; 25 | } 26 | 27 | .App-link { 28 | color: #61dafb; 29 | } 30 | 31 | @keyframes App-logo-spin { 32 | from { 33 | transform: rotate(0deg); 34 | } 35 | to { 36 | transform: rotate(360deg); 37 | } 38 | } 39 | -------------------------------------------------------------------------------- /client/package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "client", 3 | "version": "0.1.0", 4 | "private": true, 5 | "dependencies": { 6 | "@testing-library/jest-dom": "^4.2.4", 7 | "@testing-library/react": "^9.5.0", 8 | "@testing-library/user-event": "^7.2.1", 9 | "react": "^16.13.1", 10 | "react-dom": "^16.13.1", 11 | "react-scripts": "3.4.1" 12 | }, 13 | "scripts": { 14 | "start": "react-scripts start", 15 | "build": "react-scripts build", 16 | "test": "react-scripts test", 17 | "eject": "react-scripts eject" 18 | }, 19 | "eslintConfig": { 20 | "extends": "react-app" 21 | }, 22 | "browserslist": { 23 | "production": [ 24 | ">0.2%", 25 | "not dead", 26 | "not op_mini all" 27 | ], 28 | "development": [ 29 | "last 1 chrome version", 30 | "last 1 firefox version", 31 | "last 1 safari version" 32 | ] 33 | }, 34 | "proxy": "http://localhost:5000" 35 | } 36 | -------------------------------------------------------------------------------- /package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "contact-keeper", 3 | "version": "1.0.0", 4 | "description": "Contact Manager App -> MERN - Mongodb, Express, React, & Node js", 5 | "main": "server.js", 6 | "scripts": { 7 | "start": "node server.js", 8 | "server": "nodemon server.js", 9 | "client": "npm start --prefix client", 10 | "clientinstall": "npm install --prefix client", 11 | "dev": "concurrently \"npm run server\" \"npm run client\"" 12 | }, 13 | "repository": { 14 | "type": "git", 15 | "url": "git+https://github.com/xchanmolx/contact-keeper.git" 16 | }, 17 | "keywords": [], 18 | "author": "", 19 | "license": "ISC", 20 | "bugs": { 21 | "url": "https://github.com/xchanmolx/contact-keeper/issues" 22 | }, 23 | "homepage": "https://github.com/xchanmolx/contact-keeper#readme", 24 | "dependencies": { 25 | "bcryptjs": "^2.4.3", 26 | "config": "^3.3.0", 27 | "express": "^4.17.1", 28 | "express-validator": "^6.4.0", 29 | "jsonwebtoken": "^8.5.1", 30 | "mongoose": "^5.9.4" 31 | }, 32 | "devDependencies": { 33 | "concurrently": "^5.1.0", 34 | "nodemon": "^2.0.2" 35 | } 36 | } 37 | -------------------------------------------------------------------------------- /client/public/index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 12 | 13 | 17 | 18 | 27 | React App 28 | 29 | 30 | 31 |
32 | 42 | 43 | 44 | -------------------------------------------------------------------------------- /routes/users.js: -------------------------------------------------------------------------------- 1 | const express = require('express'); 2 | const router = express.Router(); 3 | const bcrypt = require('bcryptjs'); 4 | const jwt = require('jsonwebtoken'); 5 | const config = require('config'); 6 | const { check, validationResult } = require('express-validator'); 7 | 8 | const User = require('../models/User'); 9 | 10 | // @route POST api/users 11 | // @desc Register a user 12 | // @access Public 13 | router.post('/', [ 14 | check('name', 'Please add name').not().isEmpty(), 15 | check('email', 'Please include a valid email').isEmail(), 16 | check('password', 'Please enter a password with 6 or more characters').isLength({ 17 | min: 6 18 | }) 19 | ], async (req, res) => { 20 | const errors = validationResult(req); 21 | if(!errors.isEmpty()) { 22 | return res.status(400).json({ errors: errors.array() }); 23 | } 24 | 25 | const { name, email, password } = req.body; 26 | 27 | try { 28 | let user = await User.findOne({ email }); 29 | 30 | if(user) { 31 | return res.status(400).json({ msg: 'User already exists' }) 32 | } 33 | 34 | user = new User({ 35 | name, 36 | email, 37 | password 38 | }); 39 | 40 | const salt = await bcrypt.genSalt(10); 41 | 42 | user.password = await bcrypt.hash(password, salt); 43 | 44 | await user.save(); 45 | 46 | const payload = { 47 | user: { 48 | id: user.id 49 | } 50 | } 51 | 52 | jwt.sign(payload, config.get('jwtSecret'), { 53 | expiresIn: 360000 54 | }, (err, token) => { 55 | if(err) throw err; 56 | res.json({ token }); 57 | }); 58 | 59 | } catch (err) { 60 | console.error(err.message); 61 | res.status(500).send('Server Error'); 62 | } 63 | }); 64 | 65 | module.exports = router; -------------------------------------------------------------------------------- /routes/contacts.js: -------------------------------------------------------------------------------- 1 | const express = require('express'); 2 | const router = express.Router(); 3 | const auth = require('../middleware/auth'); 4 | const { check, validationResult } = require('express-validator'); 5 | 6 | const User = require('../models/User'); 7 | const Contact = require('../models/Contact'); 8 | 9 | // @route GET api/contacts 10 | // @desc Get all users contacts 11 | // @access Private 12 | router.get('/', auth, async (req, res) => { 13 | try { 14 | const contacts = await Contact.find({ user: req.user.id }).sort({ date: -1 }); 15 | res.json(contacts); 16 | } catch (err) { 17 | console.error(err.message); 18 | res.status(500).send('Server Error'); 19 | } 20 | }); 21 | 22 | // @route POST api/contacts 23 | // @desc Add new contact 24 | // @access Private 25 | router.post('/', [ auth, [ 26 | check('name', 'Name is required').not().isEmpty() 27 | ] ], async (req, res) => { 28 | const errors = validationResult(req); 29 | if(!errors.isEmpty()) { 30 | return res.status(400).json({ errors: errors.array() }); 31 | } 32 | 33 | const { name, email, phone, type } = req.body; 34 | 35 | try { 36 | const newContact = new Contact({ 37 | name, 38 | email, 39 | phone, 40 | type, 41 | user: req.user.id 42 | }); 43 | 44 | const contact = await newContact.save(); 45 | 46 | res.json(contact); 47 | } catch (err) { 48 | console.error(err.message); 49 | res.status(500).send('Server Error'); 50 | } 51 | }); 52 | 53 | // @route PUT api/contacts/:id 54 | // @desc Update contact 55 | // @access Private 56 | router.put('/:id', (req, res) => { 57 | res.send('Update contact'); 58 | }); 59 | 60 | // @route DELETE api/contacts/:id 61 | // @desc Delete contact 62 | // @access Private 63 | router.delete('/:id', (req, res) => { 64 | res.send('Delete contact'); 65 | }); 66 | 67 | module.exports = router; -------------------------------------------------------------------------------- /routes/auth.js: -------------------------------------------------------------------------------- 1 | const express = require('express'); 2 | const router = express.Router(); 3 | const bcrypt = require('bcryptjs'); 4 | const jwt = require('jsonwebtoken'); 5 | const config = require('config'); 6 | const auth = require('../middleware/auth'); 7 | const { check, validationResult } = require('express-validator'); 8 | 9 | const User = require('../models/User'); 10 | 11 | // @route GET api/auth 12 | // @desc Get logged in user 13 | // @access Private 14 | router.get('/', auth, async (req, res) => { 15 | try { 16 | const user = await User.findById(req.user.id).select('-password'); 17 | res.json(user); 18 | } catch (err) { 19 | console.error(err.message); 20 | res.status(500).send('Server Error'); 21 | } 22 | }); 23 | 24 | // @route POST api/auth 25 | // @desc Auth user & get token 26 | // @access Public 27 | router.post('/', [ 28 | check('email', 'Please include a valid email').isEmail(), 29 | check('password', 'Password is required').exists() 30 | ], async (req, res) => { 31 | const errors = validationResult(req); 32 | if(!errors.isEmpty()) { 33 | return res.status(400).json({ errors: errors.array() }); 34 | } 35 | 36 | const { email, password } = req.body; 37 | 38 | try { 39 | let user = await User.findOne({ email }); 40 | 41 | if(!user) { 42 | return res.status(400).json({ msg: 'Invalid Credentials' }); 43 | } 44 | 45 | const isMatch = await bcrypt.compare(password, user.password); 46 | 47 | if(!isMatch) { 48 | return res.status(400).json({ msg: 'Invalid Credentials' }); 49 | } 50 | 51 | const payload = { 52 | user: { 53 | id: user.id 54 | } 55 | } 56 | 57 | jwt.sign(payload, config.get('jwtSecret'), { 58 | expiresIn: 360000 59 | }, (err, token) => { 60 | if(err) throw err; 61 | res.json({ token }); 62 | }); 63 | 64 | } catch (err) { 65 | console.error(err.message); 66 | res.status(500).send('Server Error'); 67 | } 68 | }); 69 | 70 | module.exports = router; -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # Logs 2 | node_modules/ 3 | logs 4 | *.log 5 | npm-debug.log* 6 | yarn-debug.log* 7 | yarn-error.log* 8 | lerna-debug.log* 9 | 10 | # Diagnostic reports (https://nodejs.org/api/report.html) 11 | report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json 12 | 13 | # Runtime data 14 | pids 15 | *.pid 16 | *.seed 17 | *.pid.lock 18 | 19 | # Directory for instrumented libs generated by jscoverage/JSCover 20 | lib-cov 21 | 22 | # Coverage directory used by tools like istanbul 23 | coverage 24 | *.lcov 25 | 26 | # nyc test coverage 27 | .nyc_output 28 | 29 | # Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files) 30 | .grunt 31 | 32 | # Bower dependency directory (https://bower.io/) 33 | bower_components 34 | 35 | # node-waf configuration 36 | .lock-wscript 37 | 38 | # Compiled binary addons (https://nodejs.org/api/addons.html) 39 | build/Release 40 | 41 | # Dependency directories 42 | node_modules/ 43 | jspm_packages/ 44 | 45 | # TypeScript v1 declaration files 46 | typings/ 47 | 48 | # TypeScript cache 49 | *.tsbuildinfo 50 | 51 | # Optional npm cache directory 52 | .npm 53 | 54 | # Optional eslint cache 55 | .eslintcache 56 | 57 | # Microbundle cache 58 | .rpt2_cache/ 59 | .rts2_cache_cjs/ 60 | .rts2_cache_es/ 61 | .rts2_cache_umd/ 62 | 63 | # Optional REPL history 64 | .node_repl_history 65 | 66 | # Output of 'npm pack' 67 | *.tgz 68 | 69 | # Yarn Integrity file 70 | .yarn-integrity 71 | 72 | # dotenv environment variables file 73 | .env 74 | .env.test 75 | 76 | # parcel-bundler cache (https://parceljs.org/) 77 | .cache 78 | 79 | # Next.js build output 80 | .next 81 | 82 | # Nuxt.js build / generate output 83 | .nuxt 84 | dist 85 | 86 | # Gatsby files 87 | .cache/ 88 | # Comment in the public line in if your project uses Gatsby and *not* Next.js 89 | # https://nextjs.org/blog/next-9-1#public-directory-support 90 | # public 91 | 92 | # vuepress build output 93 | .vuepress/dist 94 | 95 | # Serverless directories 96 | .serverless/ 97 | 98 | # FuseBox cache 99 | .fusebox/ 100 | 101 | # DynamoDB Local files 102 | .dynamodb/ 103 | 104 | # TernJS port file 105 | .tern-port 106 | -------------------------------------------------------------------------------- /client/src/logo.svg: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /client/src/serviceWorker.js: -------------------------------------------------------------------------------- 1 | // This optional code is used to register a service worker. 2 | // register() is not called by default. 3 | 4 | // This lets the app load faster on subsequent visits in production, and gives 5 | // it offline capabilities. However, it also means that developers (and users) 6 | // will only see deployed updates on subsequent visits to a page, after all the 7 | // existing tabs open on the page have been closed, since previously cached 8 | // resources are updated in the background. 9 | 10 | // To learn more about the benefits of this model and instructions on how to 11 | // opt-in, read https://bit.ly/CRA-PWA 12 | 13 | const isLocalhost = Boolean( 14 | window.location.hostname === 'localhost' || 15 | // [::1] is the IPv6 localhost address. 16 | window.location.hostname === '[::1]' || 17 | // 127.0.0.0/8 are considered localhost for IPv4. 18 | window.location.hostname.match( 19 | /^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/ 20 | ) 21 | ); 22 | 23 | export function register(config) { 24 | if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) { 25 | // The URL constructor is available in all browsers that support SW. 26 | const publicUrl = new URL(process.env.PUBLIC_URL, window.location.href); 27 | if (publicUrl.origin !== window.location.origin) { 28 | // Our service worker won't work if PUBLIC_URL is on a different origin 29 | // from what our page is served on. This might happen if a CDN is used to 30 | // serve assets; see https://github.com/facebook/create-react-app/issues/2374 31 | return; 32 | } 33 | 34 | window.addEventListener('load', () => { 35 | const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`; 36 | 37 | if (isLocalhost) { 38 | // This is running on localhost. Let's check if a service worker still exists or not. 39 | checkValidServiceWorker(swUrl, config); 40 | 41 | // Add some additional logging to localhost, pointing developers to the 42 | // service worker/PWA documentation. 43 | navigator.serviceWorker.ready.then(() => { 44 | console.log( 45 | 'This web app is being served cache-first by a service ' + 46 | 'worker. To learn more, visit https://bit.ly/CRA-PWA' 47 | ); 48 | }); 49 | } else { 50 | // Is not localhost. Just register service worker 51 | registerValidSW(swUrl, config); 52 | } 53 | }); 54 | } 55 | } 56 | 57 | function registerValidSW(swUrl, config) { 58 | navigator.serviceWorker 59 | .register(swUrl) 60 | .then(registration => { 61 | registration.onupdatefound = () => { 62 | const installingWorker = registration.installing; 63 | if (installingWorker == null) { 64 | return; 65 | } 66 | installingWorker.onstatechange = () => { 67 | if (installingWorker.state === 'installed') { 68 | if (navigator.serviceWorker.controller) { 69 | // At this point, the updated precached content has been fetched, 70 | // but the previous service worker will still serve the older 71 | // content until all client tabs are closed. 72 | console.log( 73 | 'New content is available and will be used when all ' + 74 | 'tabs for this page are closed. See https://bit.ly/CRA-PWA.' 75 | ); 76 | 77 | // Execute callback 78 | if (config && config.onUpdate) { 79 | config.onUpdate(registration); 80 | } 81 | } else { 82 | // At this point, everything has been precached. 83 | // It's the perfect time to display a 84 | // "Content is cached for offline use." message. 85 | console.log('Content is cached for offline use.'); 86 | 87 | // Execute callback 88 | if (config && config.onSuccess) { 89 | config.onSuccess(registration); 90 | } 91 | } 92 | } 93 | }; 94 | }; 95 | }) 96 | .catch(error => { 97 | console.error('Error during service worker registration:', error); 98 | }); 99 | } 100 | 101 | function checkValidServiceWorker(swUrl, config) { 102 | // Check if the service worker can be found. If it can't reload the page. 103 | fetch(swUrl, { 104 | headers: { 'Service-Worker': 'script' }, 105 | }) 106 | .then(response => { 107 | // Ensure service worker exists, and that we really are getting a JS file. 108 | const contentType = response.headers.get('content-type'); 109 | if ( 110 | response.status === 404 || 111 | (contentType != null && contentType.indexOf('javascript') === -1) 112 | ) { 113 | // No service worker found. Probably a different app. Reload the page. 114 | navigator.serviceWorker.ready.then(registration => { 115 | registration.unregister().then(() => { 116 | window.location.reload(); 117 | }); 118 | }); 119 | } else { 120 | // Service worker found. Proceed as normal. 121 | registerValidSW(swUrl, config); 122 | } 123 | }) 124 | .catch(() => { 125 | console.log( 126 | 'No internet connection found. App is running in offline mode.' 127 | ); 128 | }); 129 | } 130 | 131 | export function unregister() { 132 | if ('serviceWorker' in navigator) { 133 | navigator.serviceWorker.ready 134 | .then(registration => { 135 | registration.unregister(); 136 | }) 137 | .catch(error => { 138 | console.error(error.message); 139 | }); 140 | } 141 | } 142 | --------------------------------------------------------------------------------