Add production dependencies

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

@@ -0,0 +1,58 @@
+import { Subscriber } from '../Subscriber';
+import { ArgumentOutOfRangeError } from '../util/ArgumentOutOfRangeError';
+import { empty } from '../observable/empty';
+export function takeLast(count) {
+    return function takeLastOperatorFunction(source) {
+        if (count === 0) {
+            return empty();
+        }
+        else {
+            return source.lift(new TakeLastOperator(count));
+        }
+    };
+}
+class TakeLastOperator {
+    constructor(total) {
+        this.total = total;
+        if (this.total < 0) {
+            throw new ArgumentOutOfRangeError;
+        }
+    }
+    call(subscriber, source) {
+        return source.subscribe(new TakeLastSubscriber(subscriber, this.total));
+    }
+}
+class TakeLastSubscriber extends Subscriber {
+    constructor(destination, total) {
+        super(destination);
+        this.total = total;
+        this.ring = new Array();
+        this.count = 0;
+    }
+    _next(value) {
+        const ring = this.ring;
+        const total = this.total;
+        const count = this.count++;
+        if (ring.length < total) {
+            ring.push(value);
+        }
+        else {
+            const index = count % total;
+            ring[index] = value;
+        }
+    }
+    _complete() {
+        const destination = this.destination;
+        let count = this.count;
+        if (count > 0) {
+            const total = this.count >= this.total ? this.total : this.count;
+            const ring = this.ring;
+            for (let i = 0; i < total; i++) {
+                const idx = (count++) % total;
+                destination.next(ring[idx]);
+            }
+        }
+        destination.complete();
+    }
+}
+//# sourceMappingURL=takeLast.js.map