cargdev/angular
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

feat(ivy): support template type check narrowing for *ngFor and *ngIf (#26203)

Browse Source 
This commit adds an ngTemplateGuard_ngIf static method to the NgIf
directive and an ngTemplateContextGuard static method to NgFor. The
function of these two static methods is to enable type narrowing
within generated type checking code for consumers of the directives.

PR Close #26203
This commit is contained in:
Alex Rickabaugh
2018-10-03 10:57:46 -07:00
committed by Jason Aden
parent 868047e87f
commit 36d6e6076e
4 changed files with 24 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
tools/public_api_guard/common/common.d.ts vendored
View File

@ -263,6 +263,7 @@ export declare class NgForOf<T> implements DoCheck {
ngForTrackBy: TrackByFunction<T>;
constructor(_viewContainer: ViewContainerRef, _template: TemplateRef<NgForOfContext<T>>, _differs: IterableDiffers);
ngDoCheck(): void;
static ngTemplateContextGuard<T>(dir: NgForOf<T>, ctx: any): ctx is NgForOfContext<T>;
}
export declare class NgForOfContext<T> {
@ -282,6 +283,7 @@ export declare class NgIf {
ngIfElse: TemplateRef<NgIfContext> | null;
ngIfThen: TemplateRef<NgIfContext> | null;
constructor(_viewContainer: ViewContainerRef, templateRef: TemplateRef<NgIfContext>);
static ngTemplateGuard_ngIf<E>(dir: NgIf, expr: E): expr is NonNullable<E>;
}
export declare class NgIfContext {