diff --git a/src/add/observable/bindCallback.ts b/src/add/observable/bindCallback.ts
index c47857d8b5..6b6f254454 100644
--- a/src/add/observable/bindCallback.ts
+++ b/src/add/observable/bindCallback.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {BoundCallbackObservable} from '../../observable/bindCallback';
 Observable.bindCallback = BoundCallbackObservable.create;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/observable/defer.ts b/src/add/observable/defer.ts
index ec116f87df..6b13fcbc3e 100644
--- a/src/add/observable/defer.ts
+++ b/src/add/observable/defer.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {DeferObservable} from '../../observable/defer';
 Observable.defer = DeferObservable.create;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/observable/empty.ts b/src/add/observable/empty.ts
index b7412ccbc4..a647e172fc 100644
--- a/src/add/observable/empty.ts
+++ b/src/add/observable/empty.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {EmptyObservable} from '../../observable/empty';
 Observable.empty = EmptyObservable.create;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/observable/forkJoin.ts b/src/add/observable/forkJoin.ts
index 708e989833..98c3829e56 100644
--- a/src/add/observable/forkJoin.ts
+++ b/src/add/observable/forkJoin.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {ForkJoinObservable} from '../../observable/forkJoin';
 Observable.forkJoin = ForkJoinObservable.create;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/observable/from.ts b/src/add/observable/from.ts
index f29154632b..8ad657c477 100644
--- a/src/add/observable/from.ts
+++ b/src/add/observable/from.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {FromObservable} from '../../observable/from';
 Observable.from = FromObservable.create;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/observable/fromArray.ts b/src/add/observable/fromArray.ts
index 24741f9e0e..333b1e860c 100644
--- a/src/add/observable/fromArray.ts
+++ b/src/add/observable/fromArray.ts
@@ -2,3 +2,5 @@ import {Observable} from '../../Observable';
 import {ArrayObservable} from '../../observable/fromArray';
 Observable.fromArray = ArrayObservable.create;
 Observable.of = ArrayObservable.of;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/observable/fromEvent.ts b/src/add/observable/fromEvent.ts
index a5b633643d..b588c28374 100644
--- a/src/add/observable/fromEvent.ts
+++ b/src/add/observable/fromEvent.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {FromEventObservable} from '../../observable/fromEvent';
 Observable.fromEvent = FromEventObservable.create;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/observable/fromEventPattern.ts b/src/add/observable/fromEventPattern.ts
index 4c8d1976ab..95a34a15f1 100644
--- a/src/add/observable/fromEventPattern.ts
+++ b/src/add/observable/fromEventPattern.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {FromEventPatternObservable} from '../../observable/fromEventPattern';
 Observable.fromEventPattern = FromEventPatternObservable.create;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/observable/fromPromise.ts b/src/add/observable/fromPromise.ts
index c83506bc3d..cda0698332 100644
--- a/src/add/observable/fromPromise.ts
+++ b/src/add/observable/fromPromise.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {PromiseObservable} from '../../observable/fromPromise';
 Observable.fromPromise = PromiseObservable.create;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/observable/interval.ts b/src/add/observable/interval.ts
index 6b9c4d8c14..6e464320bc 100644
--- a/src/add/observable/interval.ts
+++ b/src/add/observable/interval.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {IntervalObservable} from '../../observable/interval';
 Observable.interval = IntervalObservable.create;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/observable/never.ts b/src/add/observable/never.ts
index 4aab54954c..4261e6f695 100644
--- a/src/add/observable/never.ts
+++ b/src/add/observable/never.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {InfiniteObservable} from '../../observable/never';
 Observable.never = InfiniteObservable.create;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/observable/range.ts b/src/add/observable/range.ts
index d1bbf516f6..7a6d9fd639 100644
--- a/src/add/observable/range.ts
+++ b/src/add/observable/range.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {RangeObservable} from '../../observable/range';
 Observable.range = RangeObservable.create;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/observable/throw.ts b/src/add/observable/throw.ts
index 027ff5b8d2..e64699e0ce 100644
--- a/src/add/observable/throw.ts
+++ b/src/add/observable/throw.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {ErrorObservable} from '../../observable/throw';
 Observable.throw = ErrorObservable.create;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/observable/timer.ts b/src/add/observable/timer.ts
index 265a324d07..d458606098 100644
--- a/src/add/observable/timer.ts
+++ b/src/add/observable/timer.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {TimerObservable} from '../../observable/timer';
 Observable.timer = TimerObservable.create;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/buffer.ts b/src/add/operator/buffer.ts
index 36cfd1a213..f9eef3b220 100644
--- a/src/add/operator/buffer.ts
+++ b/src/add/operator/buffer.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {buffer} from '../../operator/buffer';
 Observable.prototype.buffer = buffer;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/bufferCount.ts b/src/add/operator/bufferCount.ts
index eee7330108..09ac101051 100644
--- a/src/add/operator/bufferCount.ts
+++ b/src/add/operator/bufferCount.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {bufferCount} from '../../operator/bufferCount';
 Observable.prototype.bufferCount = bufferCount;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/bufferTime.ts b/src/add/operator/bufferTime.ts
index ec38a95713..26a9d96fa5 100644
--- a/src/add/operator/bufferTime.ts
+++ b/src/add/operator/bufferTime.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {bufferTime} from '../../operator/bufferTime';
 Observable.prototype.bufferTime = bufferTime;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/bufferToggle.ts b/src/add/operator/bufferToggle.ts
index b8bf34a6bf..50ccc8c8d4 100644
--- a/src/add/operator/bufferToggle.ts
+++ b/src/add/operator/bufferToggle.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {bufferToggle} from '../../operator/bufferToggle';
 Observable.prototype.bufferToggle = bufferToggle;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/bufferWhen.ts b/src/add/operator/bufferWhen.ts
index 24635c9f53..e0ae1f8dd6 100644
--- a/src/add/operator/bufferWhen.ts
+++ b/src/add/operator/bufferWhen.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {bufferWhen} from '../../operator/bufferWhen';
 Observable.prototype.bufferWhen = bufferWhen;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/catch.ts b/src/add/operator/catch.ts
index 722e339404..b8358fc0d4 100644
--- a/src/add/operator/catch.ts
+++ b/src/add/operator/catch.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {_catch} from '../../operator/catch';
 Observable.prototype.catch = _catch;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/combineAll.ts b/src/add/operator/combineAll.ts
index 6845309856..f0c9a60724 100644
--- a/src/add/operator/combineAll.ts
+++ b/src/add/operator/combineAll.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {combineAll} from '../../operator/combineAll';
 Observable.prototype.combineAll = combineAll;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/combineLatest-static.ts b/src/add/operator/combineLatest-static.ts
index 08b141d74f..781529eabe 100644
--- a/src/add/operator/combineLatest-static.ts
+++ b/src/add/operator/combineLatest-static.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {combineLatest} from '../../operator/combineLatest-static';
 Observable.combineLatest = combineLatest;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/combineLatest.ts b/src/add/operator/combineLatest.ts
index 61cb5f4704..e6bc089c63 100644
--- a/src/add/operator/combineLatest.ts
+++ b/src/add/operator/combineLatest.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {combineLatest} from '../../operator/combineLatest';
 Observable.prototype.combineLatest = combineLatest;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/concat-static.ts b/src/add/operator/concat-static.ts
index 3a7a5edc0a..552b05d10c 100644
--- a/src/add/operator/concat-static.ts
+++ b/src/add/operator/concat-static.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {concat} from '../../operator/concat-static';
 Observable.concat = concat;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/concat.ts b/src/add/operator/concat.ts
index 8c326aa221..b86d12b364 100644
--- a/src/add/operator/concat.ts
+++ b/src/add/operator/concat.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {concat} from '../../operator/concat';
 Observable.prototype.concat = concat;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/concatAll.ts b/src/add/operator/concatAll.ts
index 97fb7a606d..6342ead9b9 100644
--- a/src/add/operator/concatAll.ts
+++ b/src/add/operator/concatAll.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {concatAll} from '../../operator/concatAll';
 Observable.prototype.concatAll = concatAll;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/concatMap.ts b/src/add/operator/concatMap.ts
index 4f01557554..f5c3799e24 100644
--- a/src/add/operator/concatMap.ts
+++ b/src/add/operator/concatMap.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {concatMap} from '../../operator/concatMap';
 Observable.prototype.concatMap = concatMap;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/concatMapTo.ts b/src/add/operator/concatMapTo.ts
index 3b3ba707b8..031a59b801 100644
--- a/src/add/operator/concatMapTo.ts
+++ b/src/add/operator/concatMapTo.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {concatMapTo} from '../../operator/concatMapTo';
 Observable.prototype.concatMapTo = concatMapTo;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/count.ts b/src/add/operator/count.ts
index 195dbd3cbf..6808e875d1 100644
--- a/src/add/operator/count.ts
+++ b/src/add/operator/count.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {count} from '../../operator/count';
 Observable.prototype.count = count;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/debounce.ts b/src/add/operator/debounce.ts
index 9c5569fec1..70336e2603 100644
--- a/src/add/operator/debounce.ts
+++ b/src/add/operator/debounce.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {debounce} from '../../operator/debounce';
 Observable.prototype.debounce = debounce;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/debounceTime.ts b/src/add/operator/debounceTime.ts
index 86f6e4ec2d..d0171fea11 100644
--- a/src/add/operator/debounceTime.ts
+++ b/src/add/operator/debounceTime.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {debounceTime} from '../../operator/debounceTime';
 Observable.prototype.debounceTime = debounceTime;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/defaultIfEmpty.ts b/src/add/operator/defaultIfEmpty.ts
index 92f05e24c2..afdb3e9ed5 100644
--- a/src/add/operator/defaultIfEmpty.ts
+++ b/src/add/operator/defaultIfEmpty.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {defaultIfEmpty} from '../../operator/defaultIfEmpty';
 Observable.prototype.defaultIfEmpty = defaultIfEmpty;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/delay.ts b/src/add/operator/delay.ts
index a9bdf234c2..1a51c8efda 100644
--- a/src/add/operator/delay.ts
+++ b/src/add/operator/delay.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {delay} from '../../operator/delay';
 Observable.prototype.delay = delay;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/dematerialize.ts b/src/add/operator/dematerialize.ts
index a00ddbcb3d..24a647a332 100644
--- a/src/add/operator/dematerialize.ts
+++ b/src/add/operator/dematerialize.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {dematerialize} from '../../operator/dematerialize';
 Observable.prototype.dematerialize = dematerialize;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/distinctUntilChanged.ts b/src/add/operator/distinctUntilChanged.ts
index f0a81180db..d5065b8225 100644
--- a/src/add/operator/distinctUntilChanged.ts
+++ b/src/add/operator/distinctUntilChanged.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {distinctUntilChanged} from '../../operator/distinctUntilChanged';
 Observable.prototype.distinctUntilChanged = distinctUntilChanged;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/do.ts b/src/add/operator/do.ts
index eca5356429..04faa3d034 100644
--- a/src/add/operator/do.ts
+++ b/src/add/operator/do.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {_do} from '../../operator/do';
 Observable.prototype.do = _do;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/every.ts b/src/add/operator/every.ts
index f0f66ecc32..edd562cd51 100644
--- a/src/add/operator/every.ts
+++ b/src/add/operator/every.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {every} from '../../operator/every';
 Observable.prototype.every = every;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/exhaust.ts b/src/add/operator/exhaust.ts
index 87c13b503c..ee84fb2de5 100644
--- a/src/add/operator/exhaust.ts
+++ b/src/add/operator/exhaust.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {exhaust} from '../../operator/exhaust';
 Observable.prototype.exhaust = exhaust;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/exhaustMap.ts b/src/add/operator/exhaustMap.ts
index b206e756f9..420646fe33 100644
--- a/src/add/operator/exhaustMap.ts
+++ b/src/add/operator/exhaustMap.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {exhaustMap} from '../../operator/exhaustMap';
 Observable.prototype.exhaustMap = exhaustMap;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/expand.ts b/src/add/operator/expand.ts
index 8e6c7ce7bb..07d75d392e 100644
--- a/src/add/operator/expand.ts
+++ b/src/add/operator/expand.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {expand} from '../../operator/expand';
 Observable.prototype.expand = expand;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/extended/distinctUntilKeyChanged.ts b/src/add/operator/extended/distinctUntilKeyChanged.ts
index ccb4c2a79b..65853832d6 100644
--- a/src/add/operator/extended/distinctUntilKeyChanged.ts
+++ b/src/add/operator/extended/distinctUntilKeyChanged.ts
@@ -3,3 +3,5 @@ import {distinctUntilKeyChanged} from '../../../operator/extended/distinctUntilK
 import {KitchenSinkOperators} from '../../../Rx.KitchenSink';
 const observableProto = (<KitchenSinkOperators<any>>Observable.prototype);
 observableProto.distinctUntilKeyChanged = distinctUntilKeyChanged;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/extended/elementAt.ts b/src/add/operator/extended/elementAt.ts
index 7c3b774269..34b95de072 100644
--- a/src/add/operator/extended/elementAt.ts
+++ b/src/add/operator/extended/elementAt.ts
@@ -3,3 +3,5 @@ import {elementAt} from '../../../operator/extended/elementAt';
 import {KitchenSinkOperators} from '../../../Rx.KitchenSink';
 const observableProto = (<KitchenSinkOperators<any>>Observable.prototype);
 observableProto.elementAt = elementAt;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/extended/find.ts b/src/add/operator/extended/find.ts
index 9b02e45e5b..997c7b3fc7 100644
--- a/src/add/operator/extended/find.ts
+++ b/src/add/operator/extended/find.ts
@@ -3,3 +3,5 @@ import {find} from '../../../operator/extended/find';
 import {KitchenSinkOperators} from '../../../Rx.KitchenSink';
 const observableProto = (<KitchenSinkOperators<any>>Observable.prototype);
 observableProto.find = find;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/extended/findIndex.ts b/src/add/operator/extended/findIndex.ts
index b26dd60662..fa1095fb45 100644
--- a/src/add/operator/extended/findIndex.ts
+++ b/src/add/operator/extended/findIndex.ts
@@ -3,3 +3,5 @@ import {findIndex} from '../../../operator/extended/findIndex';
 import {KitchenSinkOperators} from '../../../Rx.KitchenSink';
 const observableProto = (<KitchenSinkOperators<any>>Observable.prototype);
 observableProto.findIndex = findIndex;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/extended/isEmpty.ts b/src/add/operator/extended/isEmpty.ts
index 89c243608f..e13f792856 100644
--- a/src/add/operator/extended/isEmpty.ts
+++ b/src/add/operator/extended/isEmpty.ts
@@ -3,3 +3,5 @@ import {isEmpty} from '../../../operator/extended/isEmpty';
 import {KitchenSinkOperators} from '../../../Rx.KitchenSink';
 const observableProto = (<KitchenSinkOperators<any>>Observable.prototype);
 observableProto.isEmpty = isEmpty;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/extended/max.ts b/src/add/operator/extended/max.ts
index 4f80e2c951..d2ff3f8de2 100644
--- a/src/add/operator/extended/max.ts
+++ b/src/add/operator/extended/max.ts
@@ -3,3 +3,5 @@ import {max} from '../../../operator/extended/max';
 import {KitchenSinkOperators} from '../../../Rx.KitchenSink';
 const observableProto = (<KitchenSinkOperators<any>>Observable.prototype);
 observableProto.max = max;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/extended/mergeScan.ts b/src/add/operator/extended/mergeScan.ts
index 609fb0af1a..3d573786a4 100644
--- a/src/add/operator/extended/mergeScan.ts
+++ b/src/add/operator/extended/mergeScan.ts
@@ -3,3 +3,5 @@ import {mergeScan} from '../../../operator/extended/mergeScan';
 import {KitchenSinkOperators} from '../../../Rx.KitchenSink';
 const observableProto = (<KitchenSinkOperators<any>>Observable.prototype);
 observableProto.mergeScan = mergeScan;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/extended/min.ts b/src/add/operator/extended/min.ts
index 75df74232c..23dbf8e0bb 100644
--- a/src/add/operator/extended/min.ts
+++ b/src/add/operator/extended/min.ts
@@ -3,3 +3,5 @@ import {min} from '../../../operator/extended/min';
 import {KitchenSinkOperators} from '../../../Rx.KitchenSink';
 const observableProto = (<KitchenSinkOperators<any>>Observable.prototype);
 observableProto.min = min;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/extended/timeInterval.ts b/src/add/operator/extended/timeInterval.ts
index cca870a6df..63ef583e17 100644
--- a/src/add/operator/extended/timeInterval.ts
+++ b/src/add/operator/extended/timeInterval.ts
@@ -3,3 +3,5 @@ import {timeInterval} from '../../../operator/extended/timeInterval';
 import {KitchenSinkOperators} from '../../../Rx.KitchenSink';
 const observableProto = (<KitchenSinkOperators<any>>Observable.prototype);
 observableProto.timeInterval = timeInterval;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/filter.ts b/src/add/operator/filter.ts
index b4d54fc56f..80a9886dca 100644
--- a/src/add/operator/filter.ts
+++ b/src/add/operator/filter.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {filter} from '../../operator/filter';
 Observable.prototype.filter = filter;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/finally.ts b/src/add/operator/finally.ts
index 1b3b398d46..bc1e5da53e 100644
--- a/src/add/operator/finally.ts
+++ b/src/add/operator/finally.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {_finally} from '../../operator/finally';
 Observable.prototype.finally = _finally;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/first.ts b/src/add/operator/first.ts
index 5602aeea4b..e078339823 100644
--- a/src/add/operator/first.ts
+++ b/src/add/operator/first.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {first} from '../../operator/first';
 Observable.prototype.first = first;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/groupBy.ts b/src/add/operator/groupBy.ts
index 5fcfe41587..89b29bfde0 100644
--- a/src/add/operator/groupBy.ts
+++ b/src/add/operator/groupBy.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {groupBy} from '../../operator/groupBy';
 Observable.prototype.groupBy = groupBy;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/ignoreElements.ts b/src/add/operator/ignoreElements.ts
index dd697b9b3f..aa1ba3e1f1 100644
--- a/src/add/operator/ignoreElements.ts
+++ b/src/add/operator/ignoreElements.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {ignoreElements} from '../../operator/ignoreElements';
 Observable.prototype.ignoreElements = ignoreElements;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/last.ts b/src/add/operator/last.ts
index 7269885ac1..4b777bd7ec 100644
--- a/src/add/operator/last.ts
+++ b/src/add/operator/last.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {last} from '../../operator/last';
 Observable.prototype.last = last;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/map.ts b/src/add/operator/map.ts
index ba641dbb52..daa57f6c4e 100644
--- a/src/add/operator/map.ts
+++ b/src/add/operator/map.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {map} from '../../operator/map';
 Observable.prototype.map = map;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/mapTo.ts b/src/add/operator/mapTo.ts
index 98b22d4921..53c0c5ea2b 100644
--- a/src/add/operator/mapTo.ts
+++ b/src/add/operator/mapTo.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {mapTo} from '../../operator/mapTo';
 Observable.prototype.mapTo = mapTo;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/materialize.ts b/src/add/operator/materialize.ts
index 4d64a9ec3b..8239f29d06 100644
--- a/src/add/operator/materialize.ts
+++ b/src/add/operator/materialize.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {materialize} from '../../operator/materialize';
 Observable.prototype.materialize = materialize;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/merge-static.ts b/src/add/operator/merge-static.ts
index 0f5700002b..ad72c10897 100644
--- a/src/add/operator/merge-static.ts
+++ b/src/add/operator/merge-static.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {merge} from '../../operator/merge-static';
 Observable.merge = merge;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/merge.ts b/src/add/operator/merge.ts
index 571ab969ac..1ddfebefa8 100644
--- a/src/add/operator/merge.ts
+++ b/src/add/operator/merge.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {merge} from '../../operator/merge';
 Observable.prototype.merge = merge;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/mergeAll.ts b/src/add/operator/mergeAll.ts
index de3ad445a8..725dab092c 100644
--- a/src/add/operator/mergeAll.ts
+++ b/src/add/operator/mergeAll.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {mergeAll} from '../../operator/mergeAll';
 Observable.prototype.mergeAll = mergeAll;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/mergeMap.ts b/src/add/operator/mergeMap.ts
index ce2d5cdde4..336f543606 100644
--- a/src/add/operator/mergeMap.ts
+++ b/src/add/operator/mergeMap.ts
@@ -2,3 +2,5 @@ import {Observable} from '../../Observable';
 import {mergeMap} from '../../operator/mergeMap';
 Observable.prototype.mergeMap = mergeMap;
 Observable.prototype.flatMap = mergeMap;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/mergeMapTo.ts b/src/add/operator/mergeMapTo.ts
index 2e24fac577..1d70364cf7 100644
--- a/src/add/operator/mergeMapTo.ts
+++ b/src/add/operator/mergeMapTo.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {mergeMapTo} from '../../operator/mergeMapTo';
 Observable.prototype.mergeMapTo = mergeMapTo;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/multicast.ts b/src/add/operator/multicast.ts
index 151ef2ecf2..7af208a12e 100644
--- a/src/add/operator/multicast.ts
+++ b/src/add/operator/multicast.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {multicast} from '../../operator/multicast';
 Observable.prototype.multicast = multicast;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/observeOn.ts b/src/add/operator/observeOn.ts
index 7672562150..52459fe3b8 100644
--- a/src/add/operator/observeOn.ts
+++ b/src/add/operator/observeOn.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {observeOn} from '../../operator/observeOn';
 Observable.prototype.observeOn = observeOn;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/partition.ts b/src/add/operator/partition.ts
index 9dd511318e..0dc205db1b 100644
--- a/src/add/operator/partition.ts
+++ b/src/add/operator/partition.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {partition} from '../../operator/partition';
 Observable.prototype.partition = partition;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/publish.ts b/src/add/operator/publish.ts
index b049435a5d..a41255cc30 100644
--- a/src/add/operator/publish.ts
+++ b/src/add/operator/publish.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {publish} from '../../operator/publish';
 Observable.prototype.publish = publish;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/publishBehavior.ts b/src/add/operator/publishBehavior.ts
index 42eca9a5b4..5d87687799 100644
--- a/src/add/operator/publishBehavior.ts
+++ b/src/add/operator/publishBehavior.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {publishBehavior} from '../../operator/publishBehavior';
 Observable.prototype.publishBehavior = publishBehavior;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/publishLast.ts b/src/add/operator/publishLast.ts
index bedab84fcd..d8ae424ce9 100644
--- a/src/add/operator/publishLast.ts
+++ b/src/add/operator/publishLast.ts
@@ -1,4 +1,5 @@
 import {Observable} from '../../Observable';
 import {publishLast} from '../../operator/publishLast';
+Observable.prototype.publishLast = publishLast;
 
-Observable.prototype.publishLast = publishLast;
\ No newline at end of file
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/publishReplay.ts b/src/add/operator/publishReplay.ts
index bdc4af798c..9f2ce2fa0e 100644
--- a/src/add/operator/publishReplay.ts
+++ b/src/add/operator/publishReplay.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {publishReplay} from '../../operator/publishReplay';
 Observable.prototype.publishReplay = publishReplay;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/reduce.ts b/src/add/operator/reduce.ts
index 3a31a88d60..393a7b5cbe 100644
--- a/src/add/operator/reduce.ts
+++ b/src/add/operator/reduce.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {reduce} from '../../operator/reduce';
 Observable.prototype.reduce = reduce;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/repeat.ts b/src/add/operator/repeat.ts
index 2405717afe..05d00a7bb9 100644
--- a/src/add/operator/repeat.ts
+++ b/src/add/operator/repeat.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {repeat} from '../../operator/repeat';
 Observable.prototype.repeat = repeat;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/retry.ts b/src/add/operator/retry.ts
index 76ebcd202a..35f280aa96 100644
--- a/src/add/operator/retry.ts
+++ b/src/add/operator/retry.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {retry} from '../../operator/retry';
 Observable.prototype.retry = retry;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/retryWhen.ts b/src/add/operator/retryWhen.ts
index 70a29a21e0..455ae5c05f 100644
--- a/src/add/operator/retryWhen.ts
+++ b/src/add/operator/retryWhen.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {retryWhen} from '../../operator/retryWhen';
 Observable.prototype.retryWhen = retryWhen;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/sample.ts b/src/add/operator/sample.ts
index f5c9b691a7..9b92e046f1 100644
--- a/src/add/operator/sample.ts
+++ b/src/add/operator/sample.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {sample} from '../../operator/sample';
 Observable.prototype.sample = sample;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/sampleTime.ts b/src/add/operator/sampleTime.ts
index 73fecb181e..7a3d4833d3 100644
--- a/src/add/operator/sampleTime.ts
+++ b/src/add/operator/sampleTime.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {sampleTime} from '../../operator/sampleTime';
 Observable.prototype.sampleTime = sampleTime;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/scan.ts b/src/add/operator/scan.ts
index c028464916..e1a76cf787 100644
--- a/src/add/operator/scan.ts
+++ b/src/add/operator/scan.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {scan} from '../../operator/scan';
 Observable.prototype.scan = scan;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/share.ts b/src/add/operator/share.ts
index 2f11fc3544..9559e4d993 100644
--- a/src/add/operator/share.ts
+++ b/src/add/operator/share.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {share} from '../../operator/share';
 Observable.prototype.share = share;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/single.ts b/src/add/operator/single.ts
index d8176b3198..1595106f77 100644
--- a/src/add/operator/single.ts
+++ b/src/add/operator/single.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {single} from '../../operator/single';
 Observable.prototype.single = single;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/skip.ts b/src/add/operator/skip.ts
index 24eb398324..74ab5a7796 100644
--- a/src/add/operator/skip.ts
+++ b/src/add/operator/skip.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {skip} from '../../operator/skip';
 Observable.prototype.skip = skip;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/skipUntil.ts b/src/add/operator/skipUntil.ts
index f9ba07cae5..1265811d70 100644
--- a/src/add/operator/skipUntil.ts
+++ b/src/add/operator/skipUntil.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {skipUntil} from '../../operator/skipUntil';
 Observable.prototype.skipUntil = skipUntil;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/skipWhile.ts b/src/add/operator/skipWhile.ts
index b4e50ed057..a1d6dd2932 100644
--- a/src/add/operator/skipWhile.ts
+++ b/src/add/operator/skipWhile.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {skipWhile} from '../../operator/skipWhile';
 Observable.prototype.skipWhile = skipWhile;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/startWith.ts b/src/add/operator/startWith.ts
index a855f7bd26..fd7a382bd9 100644
--- a/src/add/operator/startWith.ts
+++ b/src/add/operator/startWith.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {startWith} from '../../operator/startWith';
 Observable.prototype.startWith = startWith;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/subscribeOn.ts b/src/add/operator/subscribeOn.ts
index 9abb5747c9..4b524ba687 100644
--- a/src/add/operator/subscribeOn.ts
+++ b/src/add/operator/subscribeOn.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {subscribeOn} from '../../operator/subscribeOn';
 Observable.prototype.subscribeOn = subscribeOn;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/switch.ts b/src/add/operator/switch.ts
index 4a37af9a45..dcf9dc7988 100644
--- a/src/add/operator/switch.ts
+++ b/src/add/operator/switch.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {_switch} from '../../operator/switch';
 Observable.prototype.switch = _switch;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/switchMap.ts b/src/add/operator/switchMap.ts
index 33e338b404..42c6fcc7d7 100644
--- a/src/add/operator/switchMap.ts
+++ b/src/add/operator/switchMap.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {switchMap} from '../../operator/switchMap';
 Observable.prototype.switchMap = switchMap;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/switchMapTo.ts b/src/add/operator/switchMapTo.ts
index e0addda27a..b3eec3e7f6 100644
--- a/src/add/operator/switchMapTo.ts
+++ b/src/add/operator/switchMapTo.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {switchMapTo} from '../../operator/switchMapTo';
 Observable.prototype.switchMapTo = switchMapTo;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/take.ts b/src/add/operator/take.ts
index b3060864ae..64e86d6544 100644
--- a/src/add/operator/take.ts
+++ b/src/add/operator/take.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {take} from '../../operator/take';
 Observable.prototype.take = take;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/takeUntil.ts b/src/add/operator/takeUntil.ts
index 367b914664..9ce51e43e4 100644
--- a/src/add/operator/takeUntil.ts
+++ b/src/add/operator/takeUntil.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {takeUntil} from '../../operator/takeUntil';
 Observable.prototype.takeUntil = takeUntil;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/takeWhile.ts b/src/add/operator/takeWhile.ts
index 6f8b1688a4..fabba16c0a 100644
--- a/src/add/operator/takeWhile.ts
+++ b/src/add/operator/takeWhile.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {takeWhile} from '../../operator/takeWhile';
 Observable.prototype.takeWhile = takeWhile;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/throttle.ts b/src/add/operator/throttle.ts
index 4011d004e8..efc9a93fbe 100644
--- a/src/add/operator/throttle.ts
+++ b/src/add/operator/throttle.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {throttle} from '../../operator/throttle';
 Observable.prototype.throttle = throttle;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/throttleTime.ts b/src/add/operator/throttleTime.ts
index 45b1a3a88d..840bf95c23 100644
--- a/src/add/operator/throttleTime.ts
+++ b/src/add/operator/throttleTime.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {throttleTime} from '../../operator/throttleTime';
 Observable.prototype.throttleTime = throttleTime;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/timeout.ts b/src/add/operator/timeout.ts
index 285da1f294..782c61c9e2 100644
--- a/src/add/operator/timeout.ts
+++ b/src/add/operator/timeout.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {timeout} from '../../operator/timeout';
 Observable.prototype.timeout = timeout;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/timeoutWith.ts b/src/add/operator/timeoutWith.ts
index 6c72110adb..76a0d2c473 100644
--- a/src/add/operator/timeoutWith.ts
+++ b/src/add/operator/timeoutWith.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {timeoutWith} from '../../operator/timeoutWith';
 Observable.prototype.timeoutWith = timeoutWith;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/toArray.ts b/src/add/operator/toArray.ts
index 77f83c9d60..0fdbf6c1f6 100644
--- a/src/add/operator/toArray.ts
+++ b/src/add/operator/toArray.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {toArray} from '../../operator/toArray';
 Observable.prototype.toArray = toArray;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/toPromise.ts b/src/add/operator/toPromise.ts
index b7d6fed89b..32efcb1a97 100644
--- a/src/add/operator/toPromise.ts
+++ b/src/add/operator/toPromise.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {toPromise} from '../../operator/toPromise';
 Observable.prototype.toPromise = toPromise;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/window.ts b/src/add/operator/window.ts
index ea2817b2e6..2719ef824f 100644
--- a/src/add/operator/window.ts
+++ b/src/add/operator/window.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {window} from '../../operator/window';
 Observable.prototype.window = window;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/windowCount.ts b/src/add/operator/windowCount.ts
index 4976275a98..2e41dc5a48 100644
--- a/src/add/operator/windowCount.ts
+++ b/src/add/operator/windowCount.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {windowCount} from '../../operator/windowCount';
 Observable.prototype.windowCount = windowCount;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/windowTime.ts b/src/add/operator/windowTime.ts
index d372216913..c7f11b9d1e 100644
--- a/src/add/operator/windowTime.ts
+++ b/src/add/operator/windowTime.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {windowTime} from '../../operator/windowTime';
 Observable.prototype.windowTime = windowTime;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/windowToggle.ts b/src/add/operator/windowToggle.ts
index bcaa13c5f8..c9fcadbb24 100644
--- a/src/add/operator/windowToggle.ts
+++ b/src/add/operator/windowToggle.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {windowToggle} from '../../operator/windowToggle';
 Observable.prototype.windowToggle = windowToggle;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/windowWhen.ts b/src/add/operator/windowWhen.ts
index 1f2e4f638c..5b5009b4c9 100644
--- a/src/add/operator/windowWhen.ts
+++ b/src/add/operator/windowWhen.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {windowWhen} from '../../operator/windowWhen';
 Observable.prototype.windowWhen = windowWhen;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/withLatestFrom.ts b/src/add/operator/withLatestFrom.ts
index fa34d3da49..e3fad06c24 100644
--- a/src/add/operator/withLatestFrom.ts
+++ b/src/add/operator/withLatestFrom.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {withLatestFrom} from '../../operator/withLatestFrom';
 Observable.prototype.withLatestFrom = withLatestFrom;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/zip-static.ts b/src/add/operator/zip-static.ts
index 7cc1860381..d846247247 100644
--- a/src/add/operator/zip-static.ts
+++ b/src/add/operator/zip-static.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {zip} from '../../operator/zip-static';
 Observable.zip = zip;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/zip.ts b/src/add/operator/zip.ts
index e08b407e89..87d896e03d 100644
--- a/src/add/operator/zip.ts
+++ b/src/add/operator/zip.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {zipProto} from '../../operator/zip';
 Observable.prototype.zip = zipProto;
+
+export var _void: void;
\ No newline at end of file
diff --git a/src/add/operator/zipAll.ts b/src/add/operator/zipAll.ts
index 520eea59aa..b8503f1495 100644
--- a/src/add/operator/zipAll.ts
+++ b/src/add/operator/zipAll.ts
@@ -1,3 +1,5 @@
 import {Observable} from '../../Observable';
 import {zipAll} from '../../operator/zipAll';
 Observable.prototype.zipAll = zipAll;
+
+export var _void: void;
\ No newline at end of file