1 files changed, 15 insertions, 0 deletions
diff --git a/node_modules/rxjs/dist/esm5/internal/operators/pairwise.js b/node_modules/rxjs/dist/esm5/internal/operators/pairwise.js
new file mode 100644
index 0000000..2130442
--- /dev/null
+++ b/node_modules/rxjs/dist/esm5/internal/operators/pairwise.js
@@ -0,0 +1,15 @@
+import { operate } from '../util/lift';
+import { createOperatorSubscriber } from './OperatorSubscriber';
+export function pairwise() {
+    return operate(function (source, subscriber) {
+        var prev;
+        var hasPrev = false;
+        source.subscribe(createOperatorSubscriber(subscriber, function (value) {
+            var p = prev;
+            prev = value;
+            hasPrev && subscriber.next([p, value]);
+            hasPrev = true;
+        }));
+    });
+}
+//# sourceMappingURL=pairwise.js.map
+\ No newline at end of file