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@ j o n a t h a n f m i l l s #reactPWA P R O G R E S S I V E W E B A P P S W I T H R E A C T

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Progressive Web Apps to the rescue!

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What is a PWA? RELIABLE

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What is a PWA? RELIABLE FAST

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What is a PWA? RELIABLE FAST ENGAGING

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Demo

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Service Workers

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Have you heard of a Web Worker?

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ServiceWorker != WebWorker

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if('serviceWorker' in navigator) { navigator.serviceWorker.register('/offline.js', { scope: '/' }) .then(function(registration) { console.log('Service Worker Registered'); }); navigator.serviceWorker.ready .then(function(registration) { console.log('Service Worker Ready'); }); } SERVICE WORKER

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INSTALL const CACHE_NAME = ‘DevUp’ // Version 0.6.5 self.addEventListener('install', e => { console.log('installing service worker!!') const timeStamp = Date.now(); e.waitUntil( caches.open(CACHE_NAME).then(cache => { return cache.addAll([ `/`, `/index.html`, `/json/data.json`, `/static/js/bundle.js` ]) .then(() => self.skipWaiting()); }) ); });

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INSTALL const CACHE_NAME = ‘DevUp’ // Version 0.6.5 self.addEventListener('install', e => { console.log('installing service worker!!') const timeStamp = Date.now(); e.waitUntil( caches.open(CACHE_NAME).then(cache => { return cache.addAll([ `/`, `/index.html`, `/json/data.json`, `/static/js/bundle.js` ]) .then(() => self.skipWaiting()); }) ); });

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INSTALL const CACHE_NAME = ‘DevUp' // Version 0.6.5 self.addEventListener('install', e => { console.log('installing service worker!!') const timeStamp = Date.now(); e.waitUntil( caches.open(CACHE_NAME).then(cache => { return cache.addAll([ `/`, `/index.html`, `/json/data.json`, `/static/js/bundle.js` ]) .then(() => self.skipWaiting()); }) ); });

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ACTIVATE self.addEventListener('activate', event => { console.log('activating service worker'); event.waitUntil(self.clients.claim()); });

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FETCH self.addEventListener('fetch', function(event) {…})

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FETCH event.respondWith( caches.match(event.request) .then(function(response) { // Cache hit - return response if (response) { return response; } var fetchRequest = event.request.clone(); return fetch(fetchRequest).then( function(response) { // Check if we received a valid response if(!response || response.status !== 200 || response.type !== 'basic'){ return response; } var responseToCache = response.clone(); caches.open(CACHE_NAME)

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FETCH event.respondWith( caches.match(event.request) .then(function(response) { // Cache hit - return response if (response) { return response; } var fetchRequest = event.request.clone(); return fetch(fetchRequest).then( function(response) { // Check if we received a valid response if(!response || response.status !== 200 || response.type !== 'basic'){ return response; } var responseToCache = response.clone(); caches.open(CACHE_NAME)

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FETCH event.respondWith( caches.match(event.request) .then(function(response) { // Cache hit - return response if (response) { return response; } var fetchRequest = event.request.clone(); return fetch(fetchRequest).then( function(response) { // Check if we received a valid response if(!response || response.status !== 200 || response.type !== 'basic'){ return response; } var responseToCache = response.clone(); caches.open(CACHE_NAME)

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event.respondWith( caches.match(event.request) .then(function(response) { // Cache hit - return response if (response) { return response; } var fetchRequest = event.request.clone(); return fetch(fetchRequest).then( function(response) { // Check if we received a valid response if(!response || response.status !== 200 || response.type !== 'basic'){ return response; } var responseToCache = response.clone(); caches.open(CACHE_NAME) FETCH

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} var fetchRequest = event.request.clone(); return fetch(fetchRequest).then( function(response) { // Check if we received a valid response if(!response || response.status !== 200 || response.type !== 'basic'){ return response; } var responseToCache = response.clone(); caches.open(CACHE_NAME) .then(function(cache) { cache.put(event.request, responseToCache); }); return response; } ); }) ); FETCH

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} var fetchRequest = event.request.clone(); return fetch(fetchRequest).then( function(response) { // Check if we received a valid response if(!response || response.status !== 200 || response.type !== 'basic'){ return response; } var responseToCache = response.clone(); caches.open(CACHE_NAME) .then(function(cache) { cache.put(event.request, responseToCache); }); return response; } ); }) ); FETCH

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} var fetchRequest = event.request.clone(); return fetch(fetchRequest).then( function(response) { // Check if we received a valid response if(!response || response.status !== 200 || response.type !== 'basic'){ return response; } var responseToCache = response.clone(); caches.open(CACHE_NAME) .then(function(cache) { cache.put(event.request, responseToCache); }); return response; } ); }) ); FETCH

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} var fetchRequest = event.request.clone(); return fetch(fetchRequest).then( function(response) { // Check if we received a valid response if(!response || response.status !== 200 || response.type !== 'basic'){ return response; } var responseToCache = response.clone(); caches.open(CACHE_NAME) .then(function(cache) { cache.put(event.request, responseToCache); }); return response; } ); }) ); FETCH

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Demo

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Manifest

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A manifest describes your web page in an

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INDEX.HTML

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MANIFEST { "short_name": "Library", "name": “DevUp Library Demo", "icons": [ { "src": "book.png", "sizes": "192X192", "type": "image/png" } ], "start_url": "./index.html", "display": "standalone", "theme_color": "#000000", "background_color": "#ffffff" }

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Demo

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Let’s Deploy

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Github Pages to the rescue

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PACKAGE.JSON – ADDING GH-PAGES { "name": "library", "version": "0.1.0", "private": true, "homepage": “https://jonathanfmills.github.io/DEVUPPWA”, "dependencies": { "gh-pages": "^1.1.0", … }, "scripts": { "predeploy": "npm run build", "deploy": "gh-pages -d build", } }

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Demo

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http://bit.ly/devuppwa

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@ j o n a t h a n f m i l l s #reactPWA P R O G R E S S I V E W E B A P P S W I T H R E A C T