What's new in Angular 7

What's new in Angular v7

Gerard Sans

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Gerard Sans

@gerardsans

 

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Timeline

Angular v2

Future ready

2016

Angular v4

Stable and performant

4.2 Animations

New angular.io website

4.3 HttpClient

2017

Angular v5

Smaller, Faster and Easier to use

PWA support

SSR. Material components

Bazel. Build time tools

2017

Angular v6

Smaller, Faster and Easier to use

Webpack 4. TypeScript 2.7. RxJS 6

Tooling improvements

2018 

Angular v7

Smaller, Faster and Easier to use

TypeScript 3.1. RxJS 6.3

Angular Elements. Ivy Renderer

Tooling improvements

2018 

Angular v7

New Versions

  • Angular v7
  • Angular CLI v7
  • Angular Material + CDK v7

Semantic Versioning

Semantic Versioning

X . Y . Z

   MAJOR       MINOR        PATCH  

Semantic Versioning

  • v2 Sept 2016
  • v4 March 2017
  • v5 November 2017
  • v6 May 2018
  • v7 October 2018

Long Term Support (LTS)

  • Only critical fixes and security patches
  • Angular v6 LTS begins with v7

Long Term Support (LTS)

6 months

v7

v8

v9

v10

v11

LTS (12 mo)

Goals

  • Fixed release calendar
  • Incremental upgrades
  • Stability
  • Reliability

Upgrade

update.angular.io

Breaking Changes

Base Dependencies

  • Angular Core
    • ​TypeScript 3.1
    • RxJS v6.3
  • ​Server Side Rendering
    • Domino v2.1
  • Added support Node v10

RxJS v6.3

New Features

  • New operator: endWith
  • New helper: isObservable
  • Added index to delayWhen selector
  • Added subscription to expectObservable
  • Performance improvements
import { startWith, endWith } from 'rxjs/operators'; 
import { empty, never, of, from } from 'rxjs';

from([1,2,3]).pipe(endWith('🏄‍')).subscribe(log);

of(1).pipe(endWith('🏖')).subscribe(log);
empty().pipe(endWith('🚤','🌊🌊🌊')).subscribe(log);

never().pipe(endWith('🐒')).subscribe(log);
app/my.component.ts

Operator endWith

import { Observable, isObservable } from 'rxjs';

const rxjs6 = new Observable();
const rxjs5 = { lift(){}, subscribe(){} };
const other = { subscribe(){} };
    
console.log('RxJS 6:', isObservable(rxjs6)); // true
console.log('RxJS 5:', isObservable(rxjs5)); // true
console.log('Other', isObservable(other));   // false
app/my.component.ts

Helper isObservable

TypeScript v3.1

New Features

  • Mapped object types now work on tuples and arrays (inc. Partial, Required)
  • Property declarations on functions are now supported
  • Specify types version using typesVersions
type MapToPromise<T> = {[K in keyof T]: Promise<T[K]>};

type Coordinate = [number, number];

type PromiseCoordinate = MapToPromise<Coordinate>; 

// [Promise<number>, Promise<number>]
app/my.component.ts

Mapped Types on tuples and arrays

function memoize(fn) {
  let cache, $args;
  function m() {
    ...
  }
  m.clear = () => { 
    cache = {}; 
    $args = [];
  };
  return m;
};
app/my.component.ts

Property declarations on Functions

{
  "name": "package-name",
  "version": "1.0",
  "types": "./index.d.ts",          // fallback
  "typesVersions": {
    ">=3.1": { "*": ["ts3.1/*"] }   // matches in order
  }
}

// node_modules/package-name/ts3.1/index.d.ts [v3.1]
// node_modules/package-name/index.d.ts       [other]
package.json

Specify TypeScript Version

Angular CLI

Angular CLI prompts

Angular CLI 7.1

  • Configurable prompts via schematics

    • ng new myProject

    • ng add @angular/material

  • Friendly upgrades

    • ng update @angular/cli @angular/core

Angular CLI 7.1

  • Size Budgets defined by default
    • ​​bundle, initial, allScript, all, anyScript, any
    • baseline, max, min, warning, error

    • bytes, KB, MB, %

  • Warning set at 2MB

  • Error set at 5MB

{
  "configurations": { 
   "production": {
     budgets: [
     { "type": "initial",
       "maximumWarning":"2mb", "maximumError":"5mb"},
     { "type":"bundle", "name":"vendor", 
       "baseline":"500kb", "warning":"200kb", "error":"300kb" }
     ]
   } 
  } 
}

angular.json

Configure Size Budgets

Schematics

Overview

  • Automation Technology by Angular CLI

  • Targets repetitive actions

  • Scaffolds using Best Practices

    • Create custom templates

  • Applies file transforms to your project

  • Applies code transforms via ASTs

  • Extensible

"routing": {
  "type": "boolean",
  "description": "Generates a routing module.",
  "default": false,
  "x-prompt": "Would you like to add Angular routing?"
},
schematic.json

New CLI prompts

Extensible

  • Angular CLI

    • @schematics/angular

  • Angular Material

    • @angular/material

  • State Management

    • ngrx/schematics

ngrx/schematics 

  • Scaffolding templates for ngrx
  • Provides commands for
    • Setting initial Store and Effects
    • Actions, Reducers, Entities, Features
    • Containers (injected Store)
  • Automates creation and registration
ng new ngrx-entity-todo

npm install @ngrx/schematics --save-dev

npm install 
  @ngrx/{store, effects, entity, store-devtools} --save

Creating an App using ngrx

# Setup Default Collection
ng config cli.defaultCollection @ngrx/schematics

ng generate store State --root --module app.module.ts

ng generate effect App --root --module app.module.ts

ng generate entity Todo -m app.module.ts

Using Schematics to Setup ngrx

Angular Material

material.angular.io

Overview

  • Material Design Components for Angular
    • ​​ng add @angular/material
  • Available for Web, Mobile and Desktop
  • Consistent across browsers
  • Flexible: theme, i18, accessibility support

Angular Material

  • Form controls (input, select, checkbox, date picker and sliders),
  • Navigation (menus, sidenav and toolbar)
  • Layout (grids, cards, tabs and lists )
  • Buttons
  • Indicators (progress bars and spinners)
  • Overlays (popups and modals)
  • Data tables

New Material Design Specs

material.angular.io/cdk

Overview

  • Component Developer Kit
    • ng add @angular/cdk
  • Provides common interaction patterns
    • Gestures, RLT/LTR, Accessibility, Responsiveness
  • Allows custom styling
    • ​Overlays, Base Components

Drag and Drop

<div cdkDropList>
 <div cdkDrag *ngFor="let card of cards">Card {{card.number}}</div>
</div>

Virtual Scroll

<cdk-virtual-scroll-viewport itemSize="4">
  <img *cdkVirtualFor="let image of images" [src]="image" />
</cdk-virtual-scroll-viewport>

Ecosystem

angularconsole.com

stackblitz.com

Future

Angular Elements

Ivy Compiler

What's new in Angular 7!

By Gerard Sans

What's new in Angular 7!

Yes! We are very excited. In this talk we are going to review the main features of the latest and greatest Angular release. We will also go over some cool demos and provide top tips for a successful upgrade.

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