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node_modules/rxjs/_esm2015/observable/UsingObservable.js

@@ -0,0 +1,50 @@
+import { Observable } from '../Observable';
+import { subscribeToResult } from '../util/subscribeToResult';
+import { OuterSubscriber } from '../OuterSubscriber';
+/**
+ * We need this JSDoc comment for affecting ESDoc.
+ * @extends {Ignored}
+ * @hide true
+ */
+export class UsingObservable extends Observable {
+    constructor(resourceFactory, observableFactory) {
+        super();
+        this.resourceFactory = resourceFactory;
+        this.observableFactory = observableFactory;
+    }
+    static create(resourceFactory, observableFactory) {
+        return new UsingObservable(resourceFactory, observableFactory);
+    }
+    /** @deprecated internal use only */ _subscribe(subscriber) {
+        const { resourceFactory, observableFactory } = this;
+        let resource;
+        try {
+            resource = resourceFactory();
+            return new UsingSubscriber(subscriber, resource, observableFactory);
+        }
+        catch (err) {
+            subscriber.error(err);
+        }
+    }
+}
+class UsingSubscriber extends OuterSubscriber {
+    constructor(destination, resource, observableFactory) {
+        super(destination);
+        this.resource = resource;
+        this.observableFactory = observableFactory;
+        destination.add(resource);
+        this.tryUse();
+    }
+    tryUse() {
+        try {
+            const source = this.observableFactory.call(this, this.resource);
+            if (source) {
+                this.add(subscribeToResult(this, source));
+            }
+        }
+        catch (err) {
+            this._error(err);
+        }
+    }
+}
+//# sourceMappingURL=UsingObservable.js.map