Function runCanDeactivate

packages/router/src/operators/check_guards.ts:209–228

(
  component: Object | null,
  currARS: ActivatedRouteSnapshot,
  currRSS: RouterStateSnapshot,
  futureRSS: RouterStateSnapshot,
)

}

function runCanDeactivate(
  component: Object | null,
  currARS: ActivatedRouteSnapshot,
  currRSS: RouterStateSnapshot,
  futureRSS: RouterStateSnapshot,
): Observable<GuardResult> {
  const canDeactivate = currARS && currARS.routeConfig ? currARS.routeConfig.canDeactivate : null;
  if (!canDeactivate || canDeactivate.length === 0) return of(true);
  const canDeactivateObservables = canDeactivate.map((c: any) => {
    const closestInjector = currARS._environmentInjector;
    const guard = getTokenOrFunctionIdentity<any>(c, closestInjector);
    const guardVal = isCanDeactivate(guard)
      ? guard.canDeactivate(component, currARS, currRSS, futureRSS)
      : runInInjectionContext(closestInjector, () =>
          (guard as CanDeactivateFn<any>)(component, currARS, currRSS, futureRSS),
        );
    return wrapIntoObservable(guardVal).pipe(first());
  });
  return of(canDeactivateObservables).pipe(prioritizedGuardValue());
}

export function runCanLoadGuards(
  injector: EnvironmentInjector,