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

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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
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3
packages/core/test/render3/compiler_canonical/small_app_spec.ts
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@ -101,7 +101,8 @@ class ToDoAppComponent {
// NON-NORMATIVE
(ToDoAppComponent.ngComponentDef as r3.ComponentDef<any>).directiveDefs = () =>
[ToDoItemComponent.ngComponentDef, (NgForOf as r3.DirectiveType<NgForOf<any>>).ngDirectiveDef];
[ToDoItemComponent.ngComponentDef,
(NgForOf as unknown as r3.DirectiveType<NgForOf<any>>).ngDirectiveDef];
// /NON-NORMATIVE
@Component({