Every new change

node_modules/rxjs/_esm2015/internal/observable/using.js

@@ -0,0 +1,32 @@
+import { Observable } from '../Observable';
+import { from } from './from';
+import { EMPTY } from './empty';
+export function using(resourceFactory, observableFactory) {
+    return new Observable(subscriber => {
+        let resource;
+        try {
+            resource = resourceFactory();
+        }
+        catch (err) {
+            subscriber.error(err);
+            return undefined;
+        }
+        let result;
+        try {
+            result = observableFactory(resource);
+        }
+        catch (err) {
+            subscriber.error(err);
+            return undefined;
+        }
+        const source = result ? from(result) : EMPTY;
+        const subscription = source.subscribe(subscriber);
+        return () => {
+            subscription.unsubscribe();
+            if (resource) {
+                resource.unsubscribe();
+            }
+        };
+    });
+}
+//# sourceMappingURL=using.js.map