17 lines
574 B
JavaScript
17 lines
574 B
JavaScript
|
import { Observable } from '../Observable';
|
||
|
|
import { innerFrom } from './innerFrom';
|
||
|
|
import { EMPTY } from './empty';
|
||
|
|
export function using(resourceFactory, observableFactory) {
|
||
|
|
return new Observable((subscriber) => {
|
||
|
|
const resource = resourceFactory();
|
||
|
|
const result = observableFactory(resource);
|
||
|
|
const source = result ? innerFrom(result) : EMPTY;
|
||
|
|
source.subscribe(subscriber);
|
||
|
|
return () => {
|
||
|
|
if (resource) {
|
||
|
|
resource.unsubscribe();
|
||
|
|
}
|
||
|
|
};
|
||
|
|
});
|
||
|
|
}
|
||
|
|
//# sourceMappingURL=using.js.map
|