Every new change

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

@@ -0,0 +1,48 @@
+import { Subscriber } from '../Subscriber';
+export function count(predicate) {
+    return (source) => source.lift(new CountOperator(predicate, source));
+}
+class CountOperator {
+    constructor(predicate, source) {
+        this.predicate = predicate;
+        this.source = source;
+    }
+    call(subscriber, source) {
+        return source.subscribe(new CountSubscriber(subscriber, this.predicate, this.source));
+    }
+}
+class CountSubscriber extends Subscriber {
+    constructor(destination, predicate, source) {
+        super(destination);
+        this.predicate = predicate;
+        this.source = source;
+        this.count = 0;
+        this.index = 0;
+    }
+    _next(value) {
+        if (this.predicate) {
+            this._tryPredicate(value);
+        }
+        else {
+            this.count++;
+        }
+    }
+    _tryPredicate(value) {
+        let result;
+        try {
+            result = this.predicate(value, this.index++, this.source);
+        }
+        catch (err) {
+            this.destination.error(err);
+            return;
+        }
+        if (result) {
+            this.count++;
+        }
+    }
+    _complete() {
+        this.destination.next(this.count);
+        this.destination.complete();
+    }
+}
+//# sourceMappingURL=count.js.map