!function(a,b){var c="object"==typeof exports&&exports,d=("object"==typeof module&&module&&module.exports==c&&module,"object"==typeof global&&global);d.global===d&&(window=d),"function"==typeof define&&define.amd?define(["rx","exports"],function(c,d){return a.Rx=b(a,d,c),a.Rx}):"object"==typeof module&&module&&module.exports===c?module.exports=b(a,module.exports,require("./rx")):a.Rx=b(a,{},a.Rx)}(this,function(a,b,c){function d(a,b){return a-b}var e=c.Scheduler,f=c.Internals.PriorityQueue,g=c.Internals.ScheduledItem,h=c.Internals.SchedulePeriodicRecursive,i=c.Disposable.empty,j=c.Internals.inherits;return c.VirtualTimeScheduler=function(a){function b(){throw new Error("Not implemented")}function c(){return this.toDateTimeOffset(this.clock)}function d(a,b){return this.scheduleAbsoluteWithState(a,this.clock,b)}function e(a,b,c){return this.scheduleRelativeWithState(a,this.toRelative(b),c)}function k(a,b,c){return this.scheduleRelativeWithState(a,this.toRelative(b-this.now()),c)}function l(a,b){return b(),i}function m(b,g){this.clock=b,this.comparer=g,this.isEnabled=!1,this.queue=new f(1024),a.call(this,c,d,e,k)}j(m,a);var n=m.prototype;return n.add=b,n.toDateTimeOffset=b,n.toRelative=b,n.schedulePeriodicWithState=function(a,b,c){var d=new h(this,a,b,c);return d.start()},n.scheduleRelativeWithState=function(a,b,c){var d=this.add(this.clock,b);return this.scheduleAbsoluteWithState(a,d,c)},n.scheduleRelative=function(a,b){return this.scheduleRelativeWithState(b,a,l)},n.start=function(){var a;if(!this.isEnabled){this.isEnabled=!0;do a=this.getNext(),null!==a?(this.comparer(a.dueTime,this.clock)>0&&(this.clock=a.dueTime),a.invoke()):this.isEnabled=!1;while(this.isEnabled)}},n.stop=function(){this.isEnabled=!1},n.advanceTo=function(a){var b,c=this.comparer(this.clock,a);if(this.comparer(this.clock,a)>0)throw new Error(argumentOutOfRange);if(0!==c&&!this.isEnabled){this.isEnabled=!0;do b=this.getNext(),null!==b&&this.comparer(b.dueTime,a)<=0?(this.comparer(b.dueTime,this.clock)>0&&(this.clock=b.dueTime),b.invoke()):this.isEnabled=!1;while(this.isEnabled);this.clock=a}},n.advanceBy=function(a){var b=this.add(this.clock,a),c=this.comparer(this.clock,b);if(c>0)throw new Error(argumentOutOfRange);0!==c&&this.advanceTo(b)},n.sleep=function(a){var b=this.add(this.clock,a);if(this.comparer(this.clock,b)>=0)throw new Error(argumentOutOfRange);this.clock=b},n.getNext=function(){for(var a;this.queue.length>0;){if(a=this.queue.peek(),!a.isCancelled())return a;this.queue.dequeue()}return null},n.scheduleAbsolute=function(a,b){return this.scheduleAbsoluteWithState(b,a,l)},n.scheduleAbsoluteWithState=function(a,b,c){var d=this,e=function(a,b){return d.queue.remove(f),c(a,b)},f=new g(d,a,e,b,d.comparer);return d.queue.enqueue(f),f.disposable},m}(e),c.HistoricalScheduler=function(a){function b(b,c){var e=null==b?0:b,f=c||d;a.call(this,e,f)}j(b,a);var c=b.prototype;return c.add=function(a,b){return a+b},c.toDateTimeOffset=function(a){return new Date(a).getTime()},c.toRelative=function(a){return a},b}(c.VirtualTimeScheduler),c});