The State of Angular - Speaker Deck

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@yourtwitter The State of Angular Minko Gechev twitter.com/mgechev github.com/mgechev blog.mgechev.com

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@yourtwitter https://unsplash.com/photos/rafblRbne3o

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@mgechev v9.1 is out

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@mgechev

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@mgechev Smaller Faster builds Better debugging Better type checking Improved build errors Simpler Improved i18n Improvements in Universal

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@mgechev Smaller Faster builds Better debugging Better type checking Improved build errors Simpler Improved i18n Improvements in Universal

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Predictability vs Flexibility trade-offs Predictable Flexible

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Static vs Dynamic trade-offs Static Dynamic

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Static vs Dynamic trade-offs Static Dynamic

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• Great compile-time optimizations • Excellent IDE/text editor support • Strict type checking • Source code visualization • Lazy component loading • Dynamic UI assembling • Fast builds Static Dynamic

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@mgechev So, Angular is now more dynamic!

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@mgechev …but not too dynamic

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@mgechev • Do something • Collect feedback • Adjust direction “Gradient descent” optimization

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@mgechev • Do something • Collect feedback • Adjust direction “Gradient descent” optimization

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twitter.com/mgechev @mgechev

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@mgechev Google Community

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@mgechev

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@mgechev Faster builds -40%

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@mgechev VE @Component({ selector: 'app', template: ' ...' }) class AppComponent { ... } app.ngfactory.js app.ngsummary.json app.metadata.json app.component.js app.component.d.ts

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@mgechev Ivy @Component({ selector: 'app', template: ' ...' }) class AppComponent { ... } app.component.js app.component.d.ts

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@mgechev Faster builds • We do less work • No longer generate factories • ngcc does this once* • No longer using metadata.json • Incremental AoT builds

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@mgechev Faster builds • We do less work • No longer generate factories • ngcc does this once* • No longer using metadata.json • Incremental AoT builds AoT in development

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@mgechev

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@mgechev

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@mgechev

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@mgechev Smaller bundles • Less generated code • Smaller framework

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@mgechev Smaller framework • Tree-shakable instructions • No need for ngfactory machinery

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@mgechev Improved i18n

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Angular compile-time i18n (v2-v8) src lib Link & optimize ngc ngc l10n l10n l10n l10n

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Angular compile-time i18n (v2-v8) src lib Link & optimize ngc ngc l10n l10n repeat

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@mgechev Focused on static optimizations • Generate app at compile-time: • No runtime binding overhead • Smaller bundles: • Localizations are hard to tree-shake • No need for binding instructions

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Angular compile-time i18n (Ivy) src lib Link & optimize l10n repeat ngc

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@mgechev Angular Universal

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@mgechev Challenges with Universal ● Change-refresh time ● Deployment

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@yourtwitter $ ng add @nguniversal/express-engine $ ng run [PROJECT_NAME]:serve-ssr New in v9!

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@yourtwitter $ ng update @nguniversal/express-engine

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twitter.com/mgechev @ManfredSteyer @AlanAgius4 @mgechev

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twitter.com/mgechev Deployment

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twitter.com/ mgechev New in @angular/fire

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New in @angular/fire

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twitter.com/ mgechev New in @angular/fire

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twitter.com/mgechev Request / HTML @mgechev Request scripts JS TTI Run app on server LCP

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twitter.com/mgechev Request / HTML @mgechev Request scripts JS TTI Run app on server LCP If not cached Return from the cache Cache LCP

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@mgechev Prerendering

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@yourtwitter $ ng add @nguniversal/express-engine $ ng run [PROJECT_NAME]:prerender Using Universal at build-time New in v9!

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@mgechev Building the app Prerendering <2s for 800 pages ng run app:prerender

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twitter.com/mgechev

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twitter.com/mgechev @mgechev JAMStack By HeroDevs

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twitter.com/mgechev @mgechev

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@mgechev Thank you! twitter.com/mgechev github.com/mgechev blog.mgechev.com Survey: mgv.io/talk