Micro-Apps and Angular Elements -- Talk from ngMunich, Sep. 2018

Contents:
- Micro Apps
- Web Components/ Custom Elements
- Implementing Micro Apps with Angular Elements
- DEMO
- Recipes

# Samples
https://github.com/manfredsteyer/Angular_MicroApps_Different_Technologies

# More Information and Workshops:
https://www.softwarearchitekt.at

Transcript

1. @ManfredSteyer Maintainable Client Architecture w/ Micro-Apps and Angular Elements Manfred Steyer SOFTWAREarchitekt.at ManfredSteyer
2. @ManfredSteyer About me… • Manfred Steyer • SOFTWAREarchitekt.at • Angular Trainings and Consultancy • Google Developer Expert (GDE) Page ▪ 2 Manfred Steyer Public: Munich, November 2018 Early-Bird Tickets available now! Discount Code: ngMunich (15%) In-House: everywhere http://www.softwarearchitekt.at/workshops
3. @ManfredSteyer ✓ Commodore 64 ✓ 1982 ✓ ~ 1 MHz ✓ 64 KB RAM ✓ Disks with 170 KB
4. @ManfredSteyer Version with two cores ;-) Challenge: Resources!
5. @ManfredSteyer Challenges today: Complexity
6. @ManfredSteyer There are milk products lasting longer than some JavaScript frameworks
7. @ManfredSteyer Contents 1) Micro Apps 2) Web Components 3) Implementation w/ Angular 4) DEMO
8. @ManfredSteyer 1) Micro Apps
9. @ManfredSteyer Idea System
10. @ManfredSteyer Idea µService µService µService
11. @ManfredSteyer Idea µApp µApp µApp
12. @ManfredSteyer Folie▪ 18 Pro Contra
13. @ManfredSteyer UI Composition w/ Hyperlinks µApp SPA µApp SPA µApp SPA
14. @ManfredSteyer
15. @ManfredSteyer
16. @ManfredSteyer ✓ Simple  Loosing State  Load a new Application
17. @ManfredSteyer µService Providing a (SPA based) Shell µApp µApp µApp Shell ✓ iframes ✓ Bootstrapping several SPAs ✓ Web Components
18. @ManfredSteyer 2) Web Components
19. @ManfredSteyer Framework independent Components
20. @ManfredSteyer Can be dynamically loaded into the browser!
21. @ManfredSteyer Umbrella Term for several Standards
22. @ManfredSteyer Standards Templates HTML Imports Custom Elements Shadow DOM
23. @ManfredSteyer Custom Elements Custom HTML-Element, e. g. <date-picker> Behaves like build-in ones Write once; consume with any framework Can be polyfilled for all current browser
24. @ManfredSteyer Examples <slider min="0" max="100"> … <customer-selector selected="selected()"> … <my-micro-app state="sharedState" message="handle(…)">…
25. @ManfredSteyer Shadow DOM Isolate CSS Parent cannot influence Component's layout Component cannot influence Parent or Siblings Can be emulated for all current browsers (w/ limitations)
26. @ManfredSteyer µService µApp3 µApp2 µApp1 Shell Web Components for Macro-Architecture Shared Widget Shared Widget Shared Widget Web Components for Micro-Architecture
27. @ManfredSteyer 3) Implementation with Angular
28. @ManfredSteyer Shadow DOM • Baked-in • Emulation • @Component({ encapsulation: ViewEncapsulation.Emulated }) • Default • Shadow DOM • @Component({ encapsulation: ViewEncapsulation.Native }) • Can be turned off: • @Component({ encapsulation: ViewEncapsulation.None })
29. @ManfredSteyer Custom Elements Angular Elements Wraps Angular Component Expose Custom Element
30. @ManfredSteyer MicroApp as Angular Elements @NgModule({ imports: [BrowserModule], declarations: [MicroAppComponent], bootstrap: [], entryComponents: [MicroAppComponent] }) export class AppModule { }
31. @ManfredSteyer MicroApp as Angular Elements @NgModule({ imports: [BrowserModule], declarations: [MicroAppComponent], bootstrap: [], entryComponents: [MicroAppComponent] }) export class AppModule { }
32. @ManfredSteyer MicroApp as Angular Elements @NgModule({ imports: [BrowserModule], declarations: [MicroAppComponent], bootstrap: [], entryComponents: [MicroAppComponent] }) export class AppModule { constructor(private injector: Injector) { } ngDoBootstrap() { } }
33. @ManfredSteyer MicroApp as Angular Elements @NgModule({ imports: [BrowserModule], declarations: [MicroAppComponent], bootstrap: [], entryComponents: [MicroAppComponent] }) export class AppModule { constructor(private injector: Injector) { } ngDoBootstrap() { const MicroAppElement = createCustomElement( MicroAppComponent, { injector: this.injector }); customElements.define('micro-app', MicroAppElement); } }
34. @ManfredSteyer Loading MicroApps <script src="micro-app.bundle.js"></script> <micro-app></micro-app>
35. @ManfredSteyer 4) DEMO
36. @ManfredSteyer Conclusion Separate Deployment Less Coordination Mixing Technologies Shadow DOM & Angular Elements Macro vs. Macro Level
37. @ManfredSteyer Blog > SOFTWAREarchitekt.at • A Software Architect's Approach Towards Using Angular (And SPAs In General) For Microservices Aka Microfrontends • Micro Apps With Web Components Using Angular Elements • Angular Elements: A dynamic Dashboard … • Angular, React, Vue.Js And Co. Peacefully United Thanks To Micro Apps And Web Components
38. @ManfredSteyer Contact and Downloads [mail] manfred.steyer@SOFTWAREarchitekt.at [web] SOFTWAREarchitekt.at [twitter] ManfredSteyer d Slides & Examples Munich, November 2018 or In-House Early-Bird Tickets available now! Discount Code: ngMunich (15%) http://www.softwarearchitekt.at/workshops