2 var __extends = (this && this.__extends) || (function () {
3 var extendStatics = function (d, b) {
4 extendStatics = Object.setPrototypeOf ||
5 ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
6 function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
7 return extendStatics(d, b);
9 return function (d, b) {
11 function __() { this.constructor = d; }
12 d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
15 Object.defineProperty(exports, "__esModule", { value: true });
16 var Subscriber_1 = require("../Subscriber");
17 var ArgumentOutOfRangeError_1 = require("../util/ArgumentOutOfRangeError");
18 function skipLast(count) {
19 return function (source) { return source.lift(new SkipLastOperator(count)); };
21 exports.skipLast = skipLast;
22 var SkipLastOperator = (function () {
23 function SkipLastOperator(_skipCount) {
24 this._skipCount = _skipCount;
25 if (this._skipCount < 0) {
26 throw new ArgumentOutOfRangeError_1.ArgumentOutOfRangeError;
29 SkipLastOperator.prototype.call = function (subscriber, source) {
30 if (this._skipCount === 0) {
31 return source.subscribe(new Subscriber_1.Subscriber(subscriber));
34 return source.subscribe(new SkipLastSubscriber(subscriber, this._skipCount));
37 return SkipLastOperator;
39 var SkipLastSubscriber = (function (_super) {
40 __extends(SkipLastSubscriber, _super);
41 function SkipLastSubscriber(destination, _skipCount) {
42 var _this = _super.call(this, destination) || this;
43 _this._skipCount = _skipCount;
45 _this._ring = new Array(_skipCount);
48 SkipLastSubscriber.prototype._next = function (value) {
49 var skipCount = this._skipCount;
50 var count = this._count++;
51 if (count < skipCount) {
52 this._ring[count] = value;
55 var currentIndex = count % skipCount;
56 var ring = this._ring;
57 var oldValue = ring[currentIndex];
58 ring[currentIndex] = value;
59 this.destination.next(oldValue);
62 return SkipLastSubscriber;
63 }(Subscriber_1.Subscriber));
64 //# sourceMappingURL=skipLast.js.map