ngular best practices

Wilson Mendes

@willmendesneto

Google Developer Expert Web technologies

Hi, it's me

DURING THE FREE TIME...

1. Access https://goo.gl/PibUcQ

2. Decrease the price to $0,00

3. Enjoy

Nodebots book free!

So, let's start?

<webapps/>                    are evolving

and we need to be up-to-date

Share components is <3

Layout container

<page1>
</page1>
<component1 />
<component2>
</component2>
<component3 />

4

TIPS

TIPS

Nice to meet you

ngular Styleguide

Tip #1

Types of Modules 

CORE

FEATURE

CUSTOM

SHARED

Lazy loading

EVERYTHING

@NgModule({
  providers: []
})

class MyModule {
  static forRoot() {
    return {
      ngModule: MyModule,
      providers: [ /* LIST OF YOUR PROVIDERS */]
    }
  }
}
import { NgModule }             from '@angular/core';
import { Routes, RouterModule } from '@angular/router';
import { MyModule } from './my.module';

export const routes: Routes = [
  {
    path: 'crisis',
    loadChildren: 'app/crisis/crisis.module#CrisisModule'
  }
];

@NgModule({
  imports: [
    RouterModule.forRoot(routes),
    MyModule.forRoot()
  ],
  exports: [RouterModule, RouterModule]
})

export class AppRoutingModule {}
npm install @herodevs/lazy-af

...

@NgModule({
  imports: [LazyModule],
})
export class AppModule {}

...

<div (mouseover)="load = true">
  Hover to load TestModule
</div>
<lazy-af
  *ngIf="load"
  moduleName="src/app/test/test.module#TestModule"
>
</lazy-af>

nalize your bundle

Tip #2

webpack-bundle-analyzer

lways small

Tip #3

Integration in your module

Easy to maintain

Refactor across teams

Why small packages

When you use a component ...

Demo page, please

Plug-and-play

that is how components should be 😉


...
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>

Decoupling Business Logic

EX: Feature toggle

Feature Toggle Service

Reactor Feature toggle

NGX Feature toggle

import { FeatureToggleModule } from 'ngx-feature-toggle';
...
@NgModule({
  ...
  declarations: [
    YourAppComponent
  ],
  imports: [ FeatureToggleModule ],
  bootstrap: [YourAppComponent]
  ...
})

export class YourAppComponent {
}
...
<feature-toggle [featureName]="'enableContent'">

  <p>Enabled content</p>

  <feature-toggle [featureName]="'disabledContent'">
    <p>Disabled content</p>
    <p>In that case this content should not be rendered.</p>
  </feature-toggle>

  <feature-toggle
    [featureName]="'disabledContent'"
    showWhenDisabled >

    <p>Disabled content</p>
    <p>But, it has `showWhenDisabled` attribute.</p>
    <p>In that case this content should be rendered.</p>

  </feature-toggle>

</feature-toggle>

ngDoCheck: 4.7ms

ngZone: 2.3ms

lways improve DX

Tip #4

Have you ever have problems with

Documentation

Deployments

Maintainers

Communication

Migration docs

Dependencies

Monorepos 

...can be a good solution

Organized

Tooling

Tasks

Traceability

Cross-project

Dependencies

Why monorepos

yarn affected:build --base=master
// Running affected only
// E2E Tests
yarn affected:test --base=master
yarn affected:e2e --base=master
// Unit Tests
// Build

Greenkeeper

Code Climate

Publishing a module

...can give you some hard time

ng generate my-awesome-lib
// Generating a library
ng build my-awesome-lib --prod
cd dist/my-awesome-lib
npm publish
// Publishing a library
np 
  --no-yarn 
  --contents=dist
// Publishing a library

Blue Green dep

Canary release

Dark launch

Feature Flag Rollout

Release Strategy

MASTER

BRANCH

Landkid

{1}

{2}

{3}

{4}

{5}

{2}

{6}

{5}

{1}

}

MASTER

BRANCH

{1}

{2}

{3}

{4}

{5}

{2}

{6}

{5}

{1}

}

MASTER

BRANCH

MASTER

BRANCH

{1}

{1}

{2}

{3}

{4}

{5}

{6}

}

{2}

{5}

{1}

MASTER

BRANCH

MASTER

BRANCH

<ngx-recap/>

Angular styleguide

Analyse your bundle

Improve dev experience

Automate everything

Thank you

Wilson Mendes

@willmendesneto

Google Developer Expert Web technologies

Best practices for shared modules in Angular

By willmendesneto

Best practices for shared modules in Angular

Are you working with a big Angular application with shared components? Don't you know how to manage or share these components between applications? How to start and validate if you are really doing great sharing your components thinking in something decoupled and reusable? In this talk, I will share my experience and decisions about improvements sharing modules between applications, how to manage code quality, semantic versioning and more that makes our team deliver more valuable features.

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