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Progressive Web Apps @ domfarolino

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Dom Farolino •https://github.com/domfarolino •https://twitter.com/domfarolino •ACM@UC Exec

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Roadmap 1 Native vs. Web 3 Role of the Service Worker 4 Build! 2 Progressive Web Apps

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Roadmap 1 Native vs. Web 3 Role of the Service Worker 4 Build! 2 Progressive Web Apps

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Roadmap 1 Native vs. Web 3 Role of the Service Worker 4 Build! 2 Progressive Web Apps

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Why do people choose native? 1 Native vs. Web

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• Access to native hardware • Work & load offline • Push Notifications • Home Screen 1 Native vs. Web

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Native Hardware • Bluetooth • GPS/Location • Camera • Storage

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Offline Provides user with a functional app shell

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Offline Usable content with no network connection

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Push Notifications Easy re-engagement

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Push Notifications App interactions

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Home Screen Prime real estate

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1 Wrapping Up Features Native Web Bluetooth x Camera/Mic x Location x Storage x Offline x Push Notifications x Home Screen x

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Web wasn’t built for apps no application model

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No app model • No downloadable bundle (shell) • Text parsing/display (HTML) • Basic styles (CSS) • Basic interactive content (JS)

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Current Solutions • Iconic • React Native • Phonegap • Electron • …trend of web tooling

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Roadmap 1 Native vs. Web 3 Role of the Service Worker 4 Build! 2 Progressive Web Apps

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Feature Parity Through the power of web APIs

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Browser is Boss Sits between JavaScript and native OS APIs

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• Just JavaScript! (typical) • Utilize browser’s OS integrations • User gets a progressively richer experience • Feature detection 2 Progressive Enhancement

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2 Progressive Enhancement

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Features Native Web Bluetooth x x Camera/Mic x x Location x x Storage x x/2 Offline x Push Notifications x Home Screen x 2 Progressive Enhancement

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Take a tip from native Explain ourselves

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Info.plist XML key value pair

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App Manifest XML key value pair

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Web equivalent?

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Web App Manifest manifest.json index.html

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Manifest Detection

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Manifest Detection

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Close to installable

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Common Points among offline, push notifications, and home screen

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No content

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Service Worker API

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Roadmap 1 Native vs. Web 3 Role of the Service Worker 4 Build! 2 Progressive Web Apps

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Manifest + SW = Installable Web App

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Service Worker • Event driven client side proxy • Intercepts network requests • Persistent request/response cache

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Service Worker

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Service Worker

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Progressive Enhancement app.js sw.js

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SW Events

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Roadmap 1 Native vs. Web 3 Role of the Service Worker 4 Build! 2 Progressive Web Apps

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Build What? https://github.com/domfarolino/pwa-meetup