What to Expect in New Angular 9?

What to Expect in New Angular 9?

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Angular 9

Angular is one of the prominent open-source frameworks for building web and mobile applications. A new version Angular 9 is the smaller, faster, and easier to use and it will be making Angular developers life easier. A key goal of Angular 9 is to make the Ivy compiler available for all apps.

The main benefit of Ivy is that it is able to significantly reduce the size of small and large-sized applications.

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Angular 9 Angular 9 Features  Added undecorated classes migration schematic in the core.  The formControlName also accepts a number in the form  Now allow selector-less directives as base classes in View Engine in the

compiler.  Added support selector-less directive as base classes in Ivy and also make the Ivy compiler the default for ngc.

 Convert all ngtsc diagnostics to ts.Diagnostics  bazel: support ts_library targets as entry-points for ng_package.  core: add dynamic queries schematic.

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Angular 9 Angular 9 Features  core: Mark TestBed.get as deprecated.  ivy: expose window.ng.getDebugNode helper and also support ng-add in localize package.

 ivy: i18n – add syntax support for $localize metadata block.  ivy: i18n – reorganize entry-points for better reuse.  language-service: enable logging on TypeScriptHost.

 language-service: provide diagnostic for invalid templateUrls.  language-service: provide diagnostics for invalid styleUrls.

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Angular 9 Breaking Changes in Angular 9 1) Ivy applications :-

Previously, in Ivy applications, Hammer providers were included by default.

With this commit, apps that want Hammer support must import HammerModule in their root module i.e. import {HAMMER_PROVIDERS} from './dom/events/hammer_gestures' 2) ServiceWorker: Remove deprecated option versionedFiles from service worker asset group configuration in ngsw-config.json

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Angular 9 2) ServiceWorker: Before

After

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Angular 9 Bug Fixes common: update $locationShim to notify onChange listeners before emitting AngularJS events. compiler: return enableIvy true when using readConfiguration Ivy: 1. Get name directly from nativeNode

2. Handle empty bindings in template type checker 3. In ngcc, handle inline exports in commonjs code 4. The ngcc should only index .d.ts exports within the package

5. The ngTemplateOutlet error when switching between null and template value www.techtic.com | info@techtic.com

Angular 9 Bug Fixes language-service: 1. Instantiate MetadataResolver once 2. Remove 'context' used for module resolution

Ngcc: 1. Handle deep imports that already have an extension 2. Ignore format properties that exist but are undefined

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