├── .gitignore ├── README.md ├── package.json ├── public ├── favicon.ico ├── index.html ├── logo192.png ├── logo512.png ├── manifest.json └── robots.txt ├── src ├── App.js ├── VersionContext.js ├── VersionRedux.js ├── data.js ├── index.css ├── index.js └── serviceWorker.js └── yarn.lock /.gitignore: -------------------------------------------------------------------------------- 1 | # See https://help.github.com/articles/ignoring-files/ for more about ignoring files. 2 | 3 | # dependencies 4 | /node_modules 5 | /.pnp 6 | .pnp.js 7 | 8 | # testing 9 | /coverage 10 | 11 | # production 12 | /build 13 | 14 | # misc 15 | .DS_Store 16 | .env.local 17 | .env.development.local 18 | .env.test.local 19 | .env.production.local 20 | 21 | npm-debug.log* 22 | yarn-debug.log* 23 | yarn-error.log* 24 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Replacing Redux with React Hooks 2 | 3 | - Article found here: https://www.leighhalliday.com/replacing-redux-with-react-hooks 4 | - Video found here: https://www.youtube.com/watch?v=eBYJ7O482Dc 5 | -------------------------------------------------------------------------------- /package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "redux-context", 3 | "version": "0.1.0", 4 | "private": true, 5 | "dependencies": { 6 | "react": "^16.11.0", 7 | "react-dom": "^16.11.0", 8 | "react-redux": "^7.1.1", 9 | "react-scripts": "3.2.0", 10 | "redux": "^4.0.4" 11 | }, 12 | "scripts": { 13 | "start": "react-scripts start", 14 | "build": "react-scripts build", 15 | "test": "react-scripts test", 16 | "eject": "react-scripts eject" 17 | }, 18 | "eslintConfig": { 19 | "extends": "react-app" 20 | }, 21 | "browserslist": { 22 | "production": [ 23 | ">0.2%", 24 | "not dead", 25 | "not op_mini all" 26 | ], 27 | "development": [ 28 | "last 1 chrome version", 29 | "last 1 firefox version", 30 | "last 1 safari version" 31 | ] 32 | } 33 | } 34 | -------------------------------------------------------------------------------- /public/favicon.ico: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/leighhalliday/redux-context-reducers/192e1e34a62fa4800264070513684ddab3e9324f/public/favicon.ico -------------------------------------------------------------------------------- /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 | -------------------------------------------------------------------------------- /public/logo192.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/leighhalliday/redux-context-reducers/192e1e34a62fa4800264070513684ddab3e9324f/public/logo192.png -------------------------------------------------------------------------------- /public/logo512.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/leighhalliday/redux-context-reducers/192e1e34a62fa4800264070513684ddab3e9324f/public/logo512.png -------------------------------------------------------------------------------- /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 | -------------------------------------------------------------------------------- /public/robots.txt: -------------------------------------------------------------------------------- 1 | # https://www.robotstxt.org/robotstxt.html 2 | User-agent: * 3 | -------------------------------------------------------------------------------- /src/App.js: -------------------------------------------------------------------------------- 1 | import React from "react"; 2 | import VersionRedux from "./VersionRedux"; 3 | import VersionContext from "./VersionContext"; 4 | 5 | export default function App() { 6 | return ( 7 |
8 | 9 | 10 |
11 | ); 12 | } 13 | -------------------------------------------------------------------------------- /src/VersionContext.js: -------------------------------------------------------------------------------- 1 | import React from "react"; 2 | import { restaurants } from "./data"; 3 | 4 | const initialState = { 5 | rating: 3, 6 | price: 1 7 | }; 8 | 9 | const actions = { 10 | SET_RATING: "SET_RATING", 11 | SET_PRICE: "SET_PRICE", 12 | RESET: "RESET" 13 | }; 14 | 15 | function reducer(state, action) { 16 | switch (action.type) { 17 | case actions.SET_RATING: 18 | return { ...state, rating: action.value }; 19 | case actions.SET_PRICE: 20 | return { ...state, price: action.value }; 21 | case actions.RESET: 22 | return { ...state, ...initialState }; 23 | default: 24 | return state; 25 | } 26 | } 27 | 28 | export default function VersionContext() { 29 | return ( 30 | 31 | 32 | 33 | 34 | ); 35 | } 36 | 37 | const RestaurantContext = React.createContext(); 38 | 39 | function Provider({ children }) { 40 | const [state, dispatch] = React.useReducer(reducer, initialState); 41 | 42 | const value = { 43 | rating: state.rating, 44 | price: state.price, 45 | setRating: value => { 46 | dispatch({ type: actions.SET_RATING, value }); 47 | }, 48 | setPrice: value => { 49 | dispatch({ type: actions.SET_PRICE, value }); 50 | }, 51 | reset: () => { 52 | dispatch({ type: actions.RESET }); 53 | } 54 | }; 55 | 56 | return ( 57 | 58 | {children} 59 | 60 | ); 61 | } 62 | 63 | function Filters() { 64 | const { rating, setRating, price, setPrice, reset } = React.useContext( 65 | RestaurantContext 66 | ); 67 | 68 | return ( 69 |
70 |
71 | {[1, 2, 3, 4, 5].map(num => ( 72 | 83 | ))} 84 |
85 | 86 |
87 | {[1, 2, 3].map(num => ( 88 | 99 | ))} 100 |
101 | 102 |
103 | 104 |
105 |
106 | ); 107 | } 108 | 109 | function Results() { 110 | const { rating, price } = React.useContext(RestaurantContext); 111 | const filtered = restaurants.filter( 112 | restaurant => restaurant.rating >= rating && restaurant.price >= price 113 | ); 114 | 115 | return ( 116 | 137 | ); 138 | } 139 | -------------------------------------------------------------------------------- /src/VersionRedux.js: -------------------------------------------------------------------------------- 1 | import React from "react"; 2 | import { createStore } from "redux"; 3 | import { Provider, connect } from "react-redux"; 4 | import { restaurants } from "./data"; 5 | 6 | const initialState = { 7 | rating: 3, 8 | price: 1 9 | }; 10 | 11 | const actions = { 12 | SET_RATING: "SET_RATING", 13 | SET_PRICE: "SET_PRICE", 14 | RESET: "RESET" 15 | }; 16 | 17 | function reducer(state = initialState, action) { 18 | switch (action.type) { 19 | case actions.SET_RATING: 20 | return { ...state, rating: action.value }; 21 | case actions.SET_PRICE: 22 | return { ...state, price: action.value }; 23 | case actions.RESET: 24 | return { ...state, ...initialState }; 25 | default: 26 | return state; 27 | } 28 | } 29 | const store = createStore(reducer); 30 | 31 | export default function VersionRedux() { 32 | return ( 33 | 34 | 35 | 36 | 37 | ); 38 | } 39 | 40 | function Filters({ rating, setRating, price, setPrice, reset }) { 41 | return ( 42 |
43 |
44 | {[1, 2, 3, 4, 5].map(num => ( 45 | 56 | ))} 57 |
58 | 59 |
60 | {[1, 2, 3].map(num => ( 61 | 72 | ))} 73 |
74 | 75 |
76 | 77 |
78 |
79 | ); 80 | } 81 | 82 | const ConnectedFilters = connect( 83 | state => { 84 | return { 85 | rating: state.rating, 86 | price: state.price 87 | }; 88 | }, 89 | dispatch => { 90 | return { 91 | setRating: value => dispatch({ type: actions.SET_RATING, value }), 92 | setPrice: value => dispatch({ type: actions.SET_PRICE, value }), 93 | reset: () => dispatch({ type: actions.RESET }) 94 | }; 95 | } 96 | )(Filters); 97 | 98 | function Results({ rating, price }) { 99 | const filtered = restaurants.filter( 100 | restaurant => restaurant.rating >= rating && restaurant.price >= price 101 | ); 102 | 103 | return ( 104 | 125 | ); 126 | } 127 | 128 | const ConnectedResults = connect(state => { 129 | return { 130 | rating: state.rating, 131 | price: state.price 132 | }; 133 | })(Results); 134 | -------------------------------------------------------------------------------- /src/data.js: -------------------------------------------------------------------------------- 1 | const restaurants = [ 2 | { rating: 2, price: 1, name: "Bonifacio's Burritos" }, 3 | { rating: 3, price: 3, name: "Camila's Chimichangas" }, 4 | { rating: 5, price: 2, name: "Ernesto's Enchiladas" }, 5 | { rating: 4, price: 1, name: "Maria's Mole" }, 6 | { rating: 1, price: 2, name: "Tito's Tacos" } 7 | ]; 8 | 9 | export { restaurants }; 10 | -------------------------------------------------------------------------------- /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 | main { 11 | max-width: 800px; 12 | margin: 0 auto; 13 | } 14 | 15 | ul { 16 | list-style: none; 17 | } 18 | 19 | h2 { 20 | margin-bottom: 0px; 21 | } 22 | 23 | p { 24 | margin-top: 0px; 25 | } 26 | 27 | button { 28 | border: 1px solid #f5f5f5; 29 | background: none; 30 | cursor: pointer; 31 | padding: 5px; 32 | } 33 | 34 | button.active { 35 | background-color: #b2dfdb; 36 | } 37 | -------------------------------------------------------------------------------- /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(, document.getElementById('root')); 8 | 9 | // If you want your app to work offline and load faster, you can change 10 | // unregister() to register() below. Note this comes with some pitfalls. 11 | // Learn more about service workers: https://bit.ly/CRA-PWA 12 | serviceWorker.unregister(); 13 | -------------------------------------------------------------------------------- /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 | // 127.0.0.1/8 is 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 | .then(response => { 105 | // Ensure service worker exists, and that we really are getting a JS file. 106 | const contentType = response.headers.get('content-type'); 107 | if ( 108 | response.status === 404 || 109 | (contentType != null && contentType.indexOf('javascript') === -1) 110 | ) { 111 | // No service worker found. Probably a different app. Reload the page. 112 | navigator.serviceWorker.ready.then(registration => { 113 | registration.unregister().then(() => { 114 | window.location.reload(); 115 | }); 116 | }); 117 | } else { 118 | // Service worker found. Proceed as normal. 119 | registerValidSW(swUrl, config); 120 | } 121 | }) 122 | .catch(() => { 123 | console.log( 124 | 'No internet connection found. App is running in offline mode.' 125 | ); 126 | }); 127 | } 128 | 129 | export function unregister() { 130 | if ('serviceWorker' in navigator) { 131 | navigator.serviceWorker.ready.then(registration => { 132 | registration.unregister(); 133 | }); 134 | } 135 | } 136 | --------------------------------------------------------------------------------