q9

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

@@ -0,0 +1,28 @@
+import { identity } from '../util/identity';
+import { operate } from '../util/lift';
+import { createOperatorSubscriber } from './OperatorSubscriber';
+export function skipLast(skipCount) {
+    return skipCount <= 0
+        ?
+            identity
+        : operate(function (source, subscriber) {
+            var ring = new Array(skipCount);
+            var seen = 0;
+            source.subscribe(createOperatorSubscriber(subscriber, function (value) {
+                var valueIndex = seen++;
+                if (valueIndex < skipCount) {
+                    ring[valueIndex] = value;
+                }
+                else {
+                    var index = valueIndex % skipCount;
+                    var oldValue = ring[index];
+                    ring[index] = value;
+                    subscriber.next(oldValue);
+                }
+            }));
+            return function () {
+                ring = null;
+            };
+        });
+}
+//# sourceMappingURL=skipLast.js.map