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							102 lines
						
					
					
						
							3.7 KiB
						
					
					
				
			
		
		
	
	
							102 lines
						
					
					
						
							3.7 KiB
						
					
					
				"use strict"; | 
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var __extends = (this && this.__extends) || (function () { | 
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    var extendStatics = function (d, b) { | 
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        extendStatics = Object.setPrototypeOf || | 
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            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) || | 
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            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; }; | 
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        return extendStatics(d, b); | 
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    } | 
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    return function (d, b) { | 
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        extendStatics(d, b); | 
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        function __() { this.constructor = d; } | 
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        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __()); | 
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    }; | 
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})(); | 
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Object.defineProperty(exports, "__esModule", { value: true }); | 
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var innerSubscribe_1 = require("../innerSubscribe"); | 
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exports.defaultThrottleConfig = { | 
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    leading: true, | 
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    trailing: false | 
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}; | 
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function throttle(durationSelector, config) { | 
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    if (config === void 0) { config = exports.defaultThrottleConfig; } | 
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    return function (source) { return source.lift(new ThrottleOperator(durationSelector, !!config.leading, !!config.trailing)); }; | 
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} | 
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exports.throttle = throttle; | 
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var ThrottleOperator = (function () { | 
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    function ThrottleOperator(durationSelector, leading, trailing) { | 
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        this.durationSelector = durationSelector; | 
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        this.leading = leading; | 
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        this.trailing = trailing; | 
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    } | 
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    ThrottleOperator.prototype.call = function (subscriber, source) { | 
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        return source.subscribe(new ThrottleSubscriber(subscriber, this.durationSelector, this.leading, this.trailing)); | 
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    }; | 
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    return ThrottleOperator; | 
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}()); | 
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var ThrottleSubscriber = (function (_super) { | 
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    __extends(ThrottleSubscriber, _super); | 
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    function ThrottleSubscriber(destination, durationSelector, _leading, _trailing) { | 
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        var _this = _super.call(this, destination) || this; | 
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        _this.destination = destination; | 
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        _this.durationSelector = durationSelector; | 
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        _this._leading = _leading; | 
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        _this._trailing = _trailing; | 
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        _this._hasValue = false; | 
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        return _this; | 
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    } | 
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    ThrottleSubscriber.prototype._next = function (value) { | 
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        this._hasValue = true; | 
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        this._sendValue = value; | 
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        if (!this._throttled) { | 
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            if (this._leading) { | 
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                this.send(); | 
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            } | 
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            else { | 
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                this.throttle(value); | 
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            } | 
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        } | 
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    }; | 
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    ThrottleSubscriber.prototype.send = function () { | 
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        var _a = this, _hasValue = _a._hasValue, _sendValue = _a._sendValue; | 
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        if (_hasValue) { | 
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            this.destination.next(_sendValue); | 
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            this.throttle(_sendValue); | 
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        } | 
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        this._hasValue = false; | 
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        this._sendValue = undefined; | 
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    }; | 
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    ThrottleSubscriber.prototype.throttle = function (value) { | 
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        var duration = this.tryDurationSelector(value); | 
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        if (!!duration) { | 
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            this.add(this._throttled = innerSubscribe_1.innerSubscribe(duration, new innerSubscribe_1.SimpleInnerSubscriber(this))); | 
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        } | 
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    }; | 
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    ThrottleSubscriber.prototype.tryDurationSelector = function (value) { | 
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        try { | 
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            return this.durationSelector(value); | 
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        } | 
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        catch (err) { | 
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            this.destination.error(err); | 
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            return null; | 
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        } | 
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    }; | 
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    ThrottleSubscriber.prototype.throttlingDone = function () { | 
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        var _a = this, _throttled = _a._throttled, _trailing = _a._trailing; | 
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        if (_throttled) { | 
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            _throttled.unsubscribe(); | 
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        } | 
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        this._throttled = undefined; | 
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        if (_trailing) { | 
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            this.send(); | 
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        } | 
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    }; | 
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    ThrottleSubscriber.prototype.notifyNext = function () { | 
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        this.throttlingDone(); | 
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    }; | 
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    ThrottleSubscriber.prototype.notifyComplete = function () { | 
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        this.throttlingDone(); | 
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    }; | 
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    return ThrottleSubscriber; | 
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}(innerSubscribe_1.SimpleOuterSubscriber)); | 
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//# sourceMappingURL=throttle.js.map
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