@terminus/ngx-tools
Version:
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40 lines • 5.2 kB
JavaScript
import { ReplaySubject, } from 'rxjs';
import { takeUntil } from 'rxjs/operators';
/**
* Patch the component with unsubscribe behavior
*
* @param component - The component class (`this` context)
* @returns An observable representing the unsubscribe event
*/
export function componentDestroyed(component) {
if (component.componentDestroyed$) {
return component.componentDestroyed$;
}
// eslint-disable-next-line @angular-eslint/no-lifecycle-call
var oldNgOnDestroy = component.ngOnDestroy;
var stop$ = new ReplaySubject();
// eslint-disable-next-line @angular-eslint/no-lifecycle-call
component.ngOnDestroy = function () {
// istanbul ignore else
if (oldNgOnDestroy) {
oldNgOnDestroy.apply(component);
}
stop$.next(true);
stop$.complete();
};
component.componentDestroyed$ = stop$.asObservable();
return component.componentDestroyed$;
}
/**
* A pipe-able operator to unsubscribe during OnDestroy lifecycle event
*
* @param component - The component class (`this` context)
* @returns The component wrapped in an Observable
*
* @example
* source.pipe(untilComponentDestroyed(this)).subscribe...
*/
export var untilComponentDestroyed =
// eslint-disable-next-line max-len
function (component) { return function (source) { return source.pipe(takeUntil(componentDestroyed(component))); }; };
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