Wilson Mendes

@willmendesneto

Google Developer Expert Web technologies

Angular modules

Let’s have #ngFun!

So, let's start?

HI, IT'S ME

<webapps/>                    are evolving

or moving from AngularJS to Angular

Share components is ❤️

<ItemsList />
<About />
<Gallery />
...
<page1>
</page1>
<component1 />
<component2>
</component2>
<component3 />

bundle
test
publish
lint

Opinions ?

reporter
dev server
types
coverage

npm install -g @angular/cli
// Installing Angular CLI
ng new my-app
// Creating a new Angular App
ng serve
// Starting local server

We have several options

What if the app

doesn't need 

all of that?

structure of a page
<page1>
</page1>
<component1 />
<component2>
</component2>
<component3 />
<page1>
</page1>
<component1 />
<component2>
</component2>
<component3 />

small scope

boundaries

plug-and-play

Everything is a component

Integration in your module

Easy to maintain

Refactor across teams

Why small packages

Let's start the #ngFun

Let's start a project!

🎉🎉🎉🎉🎉🎉🎉🎉🎉

#1 - NGX Page Click

Avoid bubbling

Declarative API

Component

Easy to integrate

Small package

Decoupled

#NG Why?


...
import {
  NgxPageClickModule
} from 'ngx-page-click';
...

@NgModule({
  ...
  imports: [NgxPageClickModule],
  ...
})

export class AppModule { }
<ngx-page-click
  [disabled]="disabled"
  [outsideClickHandler]="outsideClickHandler"
  [listenTo]="on"
>
	<div><p>Content goes here</p></div>
</ngx-page-click>

#2 - NGX Feature Toggle

Feature config

Routing Guards

Component

Third-parties

SSR Ready

Directive

#NG Why?


...
import {
  FeatureToggleModule
} from 'ngx-feature-toggle';
...

@NgModule({
  ...
  imports: [FeatureToggleModule],
  ...
})

export class AppModule { }
<!--
const features = {
  enableDescription: true
}
-->

<feature-toggle-provider [features]="features">
  <div *featureToggle="'enableDescription'">
    <p>condition is `true`</p>
    <p>this content will be displayed.</p>
  </div>
  <div *featureToggle="'!enableDescription'">
    <p>condition is `false`</p>
    <p>this content will be displayed.</p>
  </div>
</feature-toggle-provider>
import {
  Routes, RouterModule
} from '@angular/router';
import {
  FeatureToggleModule,
  NgxFeatureToggleCanLoadGuard,
} from 'ngx-feature-toggle';
...
// Using route guards in application
const routes: Routes = [
  { 
    path: 'playground', 
    component: PlaygroundComponent,
    canLoad: [NgxFeatureToggleCanLoadGuard],
    data: {
      featureToggle: ['enablePlayground'],
    }
  },
];

But this is "simple", let's build something really cool!

#3 - NGX Skeleton Loader

UX Improve

Declarative API

Plug-and-play

Accessibility

Animations

Themes

#NG Why?


...
import {
  NgxSkeletonLoaderModule
} from 'ngx-skeleton-loader';
...

@NgModule({
  ...
  imports: [NgxSkeletonLoaderModule],
  ...
})

export class AppModule { }


<ngx-skeleton-loader
  count="5"
  [theme]="{
    'border-radius': '5px',
     height: '50px'
  }"
>
</ngx-skeleton-loader>

How to integrate accessibility in a Skeleton?

Web ARIA Attributes

attributes for assistive tech

Combine states and a11y

Available in the package

Web ARIA Attributes

...
.loader {
  &.progress {
    /* ...css animation for progress */
  }

  @media (prefers-reduced-motion: reduce) {
    /* ...removing css animation */
    &.progress {
      background-image: none;
    }
  }
}

prefers-reduced-motion

What about dark mode ?


<!-- Uses `progress-dark` as animation -->
<ngx-skeleton-loader
  animation="progress-dark"
  count="3"
>
</ngx-skeleton-loader>

Dark-mode usage

What if I need to create a new theme for skeletons in my app?


  <ngx-skeleton-loader
    count="5"
    [theme]="{ 
      'border-radius': '5px',
      height: '50px',
      'background-color': '#992929',
      border: '1px solid white'
    }"
  ></ngx-skeleton-loader>

Theme via @Input()

/* 
 * You can find more details about `:host` 
 * at Angular Component Style Docs
 * https://angular.io/guide/component-styles#host
 */
:host >>> ngx-skeleton-loader .loader {
  border-radius: 5px;
  height: 50px;
  background-color: #992929;
  border: 1px solid white;
}

Theme via css

<ngx-recap/>

Have fun and learn with it

Start with small components

Make a plan, keep working on it

Web platform is in your favour

Sharing is caring. OSS ❤️

Thank you  👋

Wilson Mendes

@willmendesneto

Google Developer Expert Web technologies

Angular modules: Let’s have #ngFun!

By willmendesneto

Angular modules: Let’s have #ngFun!

Remember your first time with Angular? A lot of fun, right? We all know that components are the best way to share your code across web apps, but why it’s so hard to find a package that solves our problem nowadays? Skeleton components, a component that copies the page content to the clipboard, page scroll locker or even some ideas you have can be helpful for everyone! In this talk we will learn how to contribute to the NG-Ecosystem sharing your components, experiments and how to improve and how to bring back all that fun we had with Angular.

  • 200
Loading comments...

More from willmendesneto