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node_modules/rxjs/_esm2015/internal/operators/bufferWhen.js

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+import { Subscription } from '../Subscription';
+import { OuterSubscriber } from '../OuterSubscriber';
+import { subscribeToResult } from '../util/subscribeToResult';
+export function bufferWhen(closingSelector) {
+    return function (source) {
+        return source.lift(new BufferWhenOperator(closingSelector));
+    };
+}
+class BufferWhenOperator {
+    constructor(closingSelector) {
+        this.closingSelector = closingSelector;
+    }
+    call(subscriber, source) {
+        return source.subscribe(new BufferWhenSubscriber(subscriber, this.closingSelector));
+    }
+}
+class BufferWhenSubscriber extends OuterSubscriber {
+    constructor(destination, closingSelector) {
+        super(destination);
+        this.closingSelector = closingSelector;
+        this.subscribing = false;
+        this.openBuffer();
+    }
+    _next(value) {
+        this.buffer.push(value);
+    }
+    _complete() {
+        const buffer = this.buffer;
+        if (buffer) {
+            this.destination.next(buffer);
+        }
+        super._complete();
+    }
+    _unsubscribe() {
+        this.buffer = null;
+        this.subscribing = false;
+    }
+    notifyNext(outerValue, innerValue, outerIndex, innerIndex, innerSub) {
+        this.openBuffer();
+    }
+    notifyComplete() {
+        if (this.subscribing) {
+            this.complete();
+        }
+        else {
+            this.openBuffer();
+        }
+    }
+    openBuffer() {
+        let { closingSubscription } = this;
+        if (closingSubscription) {
+            this.remove(closingSubscription);
+            closingSubscription.unsubscribe();
+        }
+        const buffer = this.buffer;
+        if (this.buffer) {
+            this.destination.next(buffer);
+        }
+        this.buffer = [];
+        let closingNotifier;
+        try {
+            const { closingSelector } = this;
+            closingNotifier = closingSelector();
+        }
+        catch (err) {
+            return this.error(err);
+        }
+        closingSubscription = new Subscription();
+        this.closingSubscription = closingSubscription;
+        this.add(closingSubscription);
+        this.subscribing = true;
+        closingSubscription.add(subscribeToResult(this, closingNotifier));
+        this.subscribing = false;
+    }
+}
+//# sourceMappingURL=bufferWhen.js.map