angular-cn/aio/content/guide/updating-to-version-9.md

Updating to Angular Version 9

This guide contains everything you need to know about updating to the next Angular version.

Version 9 Schematics

If your application uses the CLI, you can update to version 9 automatically with the help of the ng update script. The script will run a series of small migrations that will transform the code of your application to be compatible with version 9.

If you're curious about the specific migrations being run (e.g. what code is changing and why), the guides below provide more context on each change and contain FAQs for common questions.

• Migrating from Renderer to Renderer2
• Migrating undecorated classes
• Migrating missing @Injectable() decorators
• Migrating dynamic queries
• Migrating to the new $localize i18n support
• Migrating ModuleWithProviders
• Migrating to ngcc npm postinstall script

Deprecations and Removals in Version 9

New Deprecations

API	Replacement	Deprecation announced	Notes
entryComponents	none	v9	See entryComponents
ANALYZE_FOR_ENTRY_COMPONENTS	none	v9	See ANALYZE_FOR_ENTRY_COMPONENTS
ModuleWithProviders without a generic	ModuleWithProviders with a generic	v9	See ModuleWithProviders section

New Removals of Deprecated APIs

Package	API	Replacement	Notes
@angular/core	Renderer	Renderer2	Migration guide.
@angular/core	RootRenderer	RendererFactory2	none
@angular/core	RenderComponentType	RendererType2	none
@angular/common	DeprecatedI18NPipesModule	CommonModule	none
@angular/common	DeprecatedCurrencyPipe	CurrencyPipe	none
@angular/common	DeprecatedDatePipe	DatePipe	none
@angular/common	DeprecatedDecimalPipe	DecimalPipe	none
@angular/common	DeprecatedPercentPipe	PercentPipe	none
@angular/forms	NgFormSelectorWarning	none	none
@angular/forms	ngForm element selector	ng-form element selector	none