update

node_modules/rxjs/_esm2015/observable/IfObservable.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 IfObservable extends Observable {
+    constructor(condition, thenSource, elseSource) {
+        super();
+        this.condition = condition;
+        this.thenSource = thenSource;
+        this.elseSource = elseSource;
+    }
+    static create(condition, thenSource, elseSource) {
+        return new IfObservable(condition, thenSource, elseSource);
+    }
+    /** @deprecated internal use only */ _subscribe(subscriber) {
+        const { condition, thenSource, elseSource } = this;
+        return new IfSubscriber(subscriber, condition, thenSource, elseSource);
+    }
+}
+class IfSubscriber extends OuterSubscriber {
+    constructor(destination, condition, thenSource, elseSource) {
+        super(destination);
+        this.condition = condition;
+        this.thenSource = thenSource;
+        this.elseSource = elseSource;
+        this.tryIf();
+    }
+    tryIf() {
+        const { condition, thenSource, elseSource } = this;
+        let result;
+        try {
+            result = condition();
+            const source = result ? thenSource : elseSource;
+            if (source) {
+                this.add(subscribeToResult(this, source));
+            }
+            else {
+                this._complete();
+            }
+        }
+        catch (err) {
+            this._error(err);
+        }
+    }
+}
+//# sourceMappingURL=IfObservable.js.map