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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 | 3x 3x 3x 3x 40x 40x 60x 20x 60x 80x 80x 60x | import { ChangeDetectorRef, DestroyRef, Pipe, PipeTransform, inject } from '@angular/core';
import { takeUntilDestroyed } from '@angular/core/rxjs-interop';
import { Subscription } from 'rxjs';
import { FeatureToggleService, FeatureToggleType } from 'ish-core/feature-toggle.module';
/**
* Pipe
*
* Used on a string, this pipe will only return true if the specified feature *is enabled*.
* For the corresponding directive, see {@link FeatureToggleDirective}.
*
* @example
* <ish-product-add-to-compare *ngIf="'compare' | ishFeature"> ...</ish-product-add-to-compare>
*/
@Pipe({ name: 'ishFeature', pure: false })
export class FeatureTogglePipe implements PipeTransform {
private enabled: boolean;
private destroyRef = inject(DestroyRef);
private subscription: Subscription;
constructor(private featureToggleService: FeatureToggleService, private cdRef: ChangeDetectorRef) {}
transform(feature: 'always' | 'never' | FeatureToggleType): boolean {
if (this.subscription) {
// eslint-disable-next-line ban/ban
this.subscription.unsubscribe();
}
this.subscription = this.featureToggleService
.enabled$(feature)
.pipe(takeUntilDestroyed(this.destroyRef))
.subscribe(val => {
this.enabled = val;
this.cdRef.markForCheck();
});
return this.enabled;
}
}
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