.

node_modules/rxjs/dist/esm5/internal/operators/tap.js

@@ -0,0 +1,40 @@
+import { isFunction } from '../util/isFunction';
+import { operate } from '../util/lift';
+import { createOperatorSubscriber } from './OperatorSubscriber';
+import { identity } from '../util/identity';
+export function tap(observerOrNext, error, complete) {
+    var tapObserver = isFunction(observerOrNext) || error || complete
+        ?
+            { next: observerOrNext, error: error, complete: complete }
+        : observerOrNext;
+    return tapObserver
+        ? operate(function (source, subscriber) {
+            var _a;
+            (_a = tapObserver.subscribe) === null || _a === void 0 ? void 0 : _a.call(tapObserver);
+            var isUnsub = true;
+            source.subscribe(createOperatorSubscriber(subscriber, function (value) {
+                var _a;
+                (_a = tapObserver.next) === null || _a === void 0 ? void 0 : _a.call(tapObserver, value);
+                subscriber.next(value);
+            }, function () {
+                var _a;
+                isUnsub = false;
+                (_a = tapObserver.complete) === null || _a === void 0 ? void 0 : _a.call(tapObserver);
+                subscriber.complete();
+            }, function (err) {
+                var _a;
+                isUnsub = false;
+                (_a = tapObserver.error) === null || _a === void 0 ? void 0 : _a.call(tapObserver, err);
+                subscriber.error(err);
+            }, function () {
+                var _a, _b;
+                if (isUnsub) {
+                    (_a = tapObserver.unsubscribe) === null || _a === void 0 ? void 0 : _a.call(tapObserver);
+                }
+                (_b = tapObserver.finalize) === null || _b === void 0 ? void 0 : _b.call(tapObserver);
+            }));
+        })
+        :
+            identity;
+}
+//# sourceMappingURL=tap.js.map