1 files changed, 23 insertions, 0 deletions
diff --git a/node_modules/rxjs/dist/esm5/internal/operators/distinctUntilChanged.js b/node_modules/rxjs/dist/esm5/internal/operators/distinctUntilChanged.js
new file mode 100644
index 0000000..3094442
--- /dev/null
+++ b/node_modules/rxjs/dist/esm5/internal/operators/distinctUntilChanged.js
@@ -0,0 +1,23 @@
+import { identity } from '../util/identity';
+import { operate } from '../util/lift';
+import { createOperatorSubscriber } from './OperatorSubscriber';
+export function distinctUntilChanged(comparator, keySelector) {
+    if (keySelector === void 0) { keySelector = identity; }
+    comparator = comparator !== null && comparator !== void 0 ? comparator : defaultCompare;
+    return operate(function (source, subscriber) {
+        var previousKey;
+        var first = true;
+        source.subscribe(createOperatorSubscriber(subscriber, function (value) {
+            var currentKey = keySelector(value);
+            if (first || !comparator(previousKey, currentKey)) {
+                first = false;
+                previousKey = currentKey;
+                subscriber.next(value);
+            }
+        }));
+    });
+}
+function defaultCompare(a, b) {
+    return a === b;
+}
+//# sourceMappingURL=distinctUntilChanged.js.map
+\ No newline at end of file