--- /dev/null
+"use strict";
+var __extends = (this && this.__extends) || (function () {
+ var extendStatics = function (d, b) {
+ extendStatics = Object.setPrototypeOf ||
+ ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
+ function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
+ return extendStatics(d, b);
+ }
+ return function (d, b) {
+ extendStatics(d, b);
+ function __() { this.constructor = d; }
+ d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
+ };
+})();
+Object.defineProperty(exports, "__esModule", { value: true });
+var OuterSubscriber_1 = require("../OuterSubscriber");
+var subscribeToResult_1 = require("../util/subscribeToResult");
+exports.defaultThrottleConfig = {
+ leading: true,
+ trailing: false
+};
+function throttle(durationSelector, config) {
+ if (config === void 0) { config = exports.defaultThrottleConfig; }
+ return function (source) { return source.lift(new ThrottleOperator(durationSelector, config.leading, config.trailing)); };
+}
+exports.throttle = throttle;
+var ThrottleOperator = (function () {
+ function ThrottleOperator(durationSelector, leading, trailing) {
+ this.durationSelector = durationSelector;
+ this.leading = leading;
+ this.trailing = trailing;
+ }
+ ThrottleOperator.prototype.call = function (subscriber, source) {
+ return source.subscribe(new ThrottleSubscriber(subscriber, this.durationSelector, this.leading, this.trailing));
+ };
+ return ThrottleOperator;
+}());
+var ThrottleSubscriber = (function (_super) {
+ __extends(ThrottleSubscriber, _super);
+ function ThrottleSubscriber(destination, durationSelector, _leading, _trailing) {
+ var _this = _super.call(this, destination) || this;
+ _this.destination = destination;
+ _this.durationSelector = durationSelector;
+ _this._leading = _leading;
+ _this._trailing = _trailing;
+ _this._hasValue = false;
+ return _this;
+ }
+ ThrottleSubscriber.prototype._next = function (value) {
+ this._hasValue = true;
+ this._sendValue = value;
+ if (!this._throttled) {
+ if (this._leading) {
+ this.send();
+ }
+ else {
+ this.throttle(value);
+ }
+ }
+ };
+ ThrottleSubscriber.prototype.send = function () {
+ var _a = this, _hasValue = _a._hasValue, _sendValue = _a._sendValue;
+ if (_hasValue) {
+ this.destination.next(_sendValue);
+ this.throttle(_sendValue);
+ }
+ this._hasValue = false;
+ this._sendValue = null;
+ };
+ ThrottleSubscriber.prototype.throttle = function (value) {
+ var duration = this.tryDurationSelector(value);
+ if (!!duration) {
+ this.add(this._throttled = subscribeToResult_1.subscribeToResult(this, duration));
+ }
+ };
+ ThrottleSubscriber.prototype.tryDurationSelector = function (value) {
+ try {
+ return this.durationSelector(value);
+ }
+ catch (err) {
+ this.destination.error(err);
+ return null;
+ }
+ };
+ ThrottleSubscriber.prototype.throttlingDone = function () {
+ var _a = this, _throttled = _a._throttled, _trailing = _a._trailing;
+ if (_throttled) {
+ _throttled.unsubscribe();
+ }
+ this._throttled = null;
+ if (_trailing) {
+ this.send();
+ }
+ };
+ ThrottleSubscriber.prototype.notifyNext = function (outerValue, innerValue, outerIndex, innerIndex, innerSub) {
+ this.throttlingDone();
+ };
+ ThrottleSubscriber.prototype.notifyComplete = function () {
+ this.throttlingDone();
+ };
+ return ThrottleSubscriber;
+}(OuterSubscriber_1.OuterSubscriber));
+//# sourceMappingURL=throttle.js.map
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