Package Exports
- @w11k/ngx-componentdestroyed
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Readme
Version 4.0.0 - new name
- This package was renamed to '@w11k/ngx-componentdestroyed'
Requirements
- Requires >= RxJS 6.0.0 (part of Angular 6)
Unsubscribe from Observables in Angular Components
This small library provides a utility method that helps to unsubscribe from ReactiveX's Observables in Angular Components.
Demo
@Component({
selector: 'foo',
templateUrl: './foo.component.html'
})
export class FooComponent implements OnInit, OnDestroy {
ngOnInit() {
Observable.interval(1000)
.pipe(
untilComponentDestroyed(this) // <--- magic is here!
)
.subscribe(console.log);
}
ngOnDestroy() {
}
}Installation / Usage
Download the NPM package
npm i --save @w11k/ngx-componentdestroyedPrepare the Angular Component class
The component class must have a ngOnDestroy() method (it can be empty):
@Component({
selector: 'foo',
templateUrl: './foo.component.html'
})
export class FooComponent implements OnDestroy {
// ...
ngOnDestroy() {
}
}Usage
Use the untilComponentDestroyed() method as an Observable pipe operator. This only works inside Angular components since this library uses the component's life cycle hooks to determine when the Observable is not needed anymore.
import {untilComponentDestroyed} from "@w11k/ngx-componentdestroyed";
...
...
Observable.interval(1000)
.pipe(
untilComponentDestroyed(this)
)
.subscribe(console.log);