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node_modules/rxjs/_esm5/internal/operators/throttleTime.js

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+/** PURE_IMPORTS_START tslib,_Subscriber,_scheduler_async,_throttle PURE_IMPORTS_END */
+import * as tslib_1 from "tslib";
+import { Subscriber } from '../Subscriber';
+import { async } from '../scheduler/async';
+import { defaultThrottleConfig } from './throttle';
+export function throttleTime(duration, scheduler, config) {
+    if (scheduler === void 0) {
+        scheduler = async;
+    }
+    if (config === void 0) {
+        config = defaultThrottleConfig;
+    }
+    return function (source) { return source.lift(new ThrottleTimeOperator(duration, scheduler, config.leading, config.trailing)); };
+}
+var ThrottleTimeOperator = /*@__PURE__*/ (function () {
+    function ThrottleTimeOperator(duration, scheduler, leading, trailing) {
+        this.duration = duration;
+        this.scheduler = scheduler;
+        this.leading = leading;
+        this.trailing = trailing;
+    }
+    ThrottleTimeOperator.prototype.call = function (subscriber, source) {
+        return source.subscribe(new ThrottleTimeSubscriber(subscriber, this.duration, this.scheduler, this.leading, this.trailing));
+    };
+    return ThrottleTimeOperator;
+}());
+var ThrottleTimeSubscriber = /*@__PURE__*/ (function (_super) {
+    tslib_1.__extends(ThrottleTimeSubscriber, _super);
+    function ThrottleTimeSubscriber(destination, duration, scheduler, leading, trailing) {
+        var _this = _super.call(this, destination) || this;
+        _this.duration = duration;
+        _this.scheduler = scheduler;
+        _this.leading = leading;
+        _this.trailing = trailing;
+        _this._hasTrailingValue = false;
+        _this._trailingValue = null;
+        return _this;
+    }
+    ThrottleTimeSubscriber.prototype._next = function (value) {
+        if (this.throttled) {
+            if (this.trailing) {
+                this._trailingValue = value;
+                this._hasTrailingValue = true;
+            }
+        }
+        else {
+            this.add(this.throttled = this.scheduler.schedule(dispatchNext, this.duration, { subscriber: this }));
+            if (this.leading) {
+                this.destination.next(value);
+            }
+            else if (this.trailing) {
+                this._trailingValue = value;
+                this._hasTrailingValue = true;
+            }
+        }
+    };
+    ThrottleTimeSubscriber.prototype._complete = function () {
+        if (this._hasTrailingValue) {
+            this.destination.next(this._trailingValue);
+            this.destination.complete();
+        }
+        else {
+            this.destination.complete();
+        }
+    };
+    ThrottleTimeSubscriber.prototype.clearThrottle = function () {
+        var throttled = this.throttled;
+        if (throttled) {
+            if (this.trailing && this._hasTrailingValue) {
+                this.destination.next(this._trailingValue);
+                this._trailingValue = null;
+                this._hasTrailingValue = false;
+            }
+            throttled.unsubscribe();
+            this.remove(throttled);
+            this.throttled = null;
+        }
+    };
+    return ThrottleTimeSubscriber;
+}(Subscriber));
+function dispatchNext(arg) {
+    var subscriber = arg.subscriber;
+    subscriber.clearThrottle();
+}
+//# sourceMappingURL=throttleTime.js.map