@reactivex/rxjs

<a name="5.5.6"></a> ## [5.5.6](https://github.com/ReactiveX/RxJS/compare/5.5.5...v5.5.6) (2017-12-21) ### Bug Fixes * **Observable:** rethrow errors when syncErrorThrowable and inherit it from destination. Fixes [#2813](https://github.com/ReactiveX/RxJS/issues/2813) ([541b49d](https://github.com/ReactiveX/RxJS/commit/541b49d)) <a name="5.5.5"></a> ## [5.5.5](https://github.com/ReactiveX/RxJS/compare/5.5.4...v5.5.5) (2017-12-06) ### Support Added * **Bazel:** Add files to support users that want Bazel builds with RxJS ([12dac3b](https://github.com/ReactiveX/rxjs/commit/12dac3b)) <a name="5.5.4"></a> ## [5.5.4](https://github.com/ReactiveX/RxJS/compare/5.5.3...v5.5.4) (2017-12-05) ### Bug Fixes * **scheduler:** resolve regression on angular router with zones ([#3158](https://github.com/ReactiveX/RxJS/issues/3158)) ([520b06a](https://github.com/ReactiveX/RxJS/commit/520b06a)) * **publish:** re-publish after having built with proper version of TypeScript. ([f0ff5bc](https://github.com/ReactiveX/RxJS/commit/f0ff5bc), closes[#3155](https://github.com/ReactiveX/rxjs/issues/3155)) <a name="5.5.3"></a> ## [5.5.3](https://github.com/ReactiveX/RxJS/compare/5.5.2...v5.5.3) (2017-12-01) ### Bug Fixes * **concatStatic:** missing exports for mergeStatic and concatStatic ([#2999](https://github.com/ReactiveX/RxJS/issues/2999)) ([cae5f9b](https://github.com/ReactiveX/RxJS/commit/cae5f9b)) * **scheduler:** prevent unwanted clearInterval ([#3044](https://github.com/ReactiveX/RxJS/issues/3044)) ([7d722d4](https://github.com/ReactiveX/RxJS/commit/7d722d4)), closes [#3042](https://github.com/ReactiveX/RxJS/issues/3042) * **SystemJS:** avoid node module resolution of pipeable operators ([#3025](https://github.com/ReactiveX/RxJS/issues/3025)) ([d77e3d7](https://github.com/ReactiveX/RxJS/commit/d77e3d7)), closes [#2971](https://github.com/ReactiveX/RxJS/issues/2971) [#2996](https://github.com/ReactiveX/RxJS/issues/2996) [#3011](https://github.com/ReactiveX/RxJS/issues/3011) * **typings:** fix subscribe overloads ([#3053](https://github.com/ReactiveX/RxJS/issues/3053)) ([1a9fd42](https://github.com/ReactiveX/RxJS/commit/1a9fd42)), closes [#3052](https://github.com/ReactiveX/RxJS/issues/3052) <a name="5.5.2"></a> ## [5.5.2](https://github.com/ReactiveX/RxJS/compare/5.5.1...v5.5.2) (2017-10-25) ### Bug Fixes * **package:** fixed import failures in Webpack ([#2987](https://github.com/ReactiveX/RxJS/issues/2987)) ([e16202d](https://github.com/ReactiveX/RxJS/commit/e16202d)) * **typings:** improved type inference for arguments to publishReplay ([#2992](https://github.com/ReactiveX/RxJS/issues/2992)) ([0753ff7](https://github.com/ReactiveX/RxJS/commit/0753ff7)), closes [#2991](https://github.com/ReactiveX/RxJS/issues/2991) * **typings:** ensure TS types for `zip` and `combineLatest` are properly inferred. ([b8e6cf8](https://github.com/ReactiveX/RxJS/commit/b8e6cf8)) * **typings:** publish variants will properly return ConnectableObservable([#2983](https://github.com/ReactiveX/RxJS/issues/2983)) ([d563bfa](https://github.com/ReactiveX/RxJS/commit/d563bfa)) <a name="5.5.1"></a> ## [5.5.1](https://github.com/ReactiveX/RxJS/compare/5.5.0...v5.5.1) (2017-10-24) ### Bug Fixes * **build:** Remove `module` and `es2015` keys to avoid resolution conflicts ([5073139](https:/github.com/ReactiveX/RxJS/commit/5073139)) * **ajaxobservable:** fix operator import path ([d9b62ed](https://github.com/ReactiveX/RxJS/commit/d9b62ed)) <a name="5.5.0"></a> # [5.5.0](https://github.com/ReactiveX/RxJS/compare/5.5.0-beta.7...v5.5.0) (2017-10-18) ### Bug Fixes * **build:** CJS sourceMaps now inlined into sourcesContent ([39b4af5](https://github.com/ReactiveX/RxJS/commit/39b4af5)), closes [#2934](https://github.com/ReactiveX/RxJS/issues/2934) ### Features * **publishReplay:** add selector function to publishReplay ([#2885](https://github.com/ReactiveX/RxJS/issues/2885)) ([e0efd13](https://github.com/ReactiveX/RxJS/commit/e0efd13)) <a name="5.5.0-beta.7"></a> # [5.5.0-beta.7](https://github.com/ReactiveX/RxJS/compare/5.5.0-beta.5...5.5.0-beta.7) (2017-10-13) (Due to a publish snafu, there is no 5.5.0-beta.6) (womp womp 👎) ### Bug Fixes * **build:** sourceMaps updated to support CJS properly again ([75f7f11](https://github.com/ReactiveX/RxJS/commit/75f7f11)), closes [#2934](https://github.com/ReactiveX/RxJS/issues/2934) * **flatMap:** reexport flatMap as alias of mergeMap ([#2920](https://github.com/ReactiveX/RxJS/issues/2920)) ([9922c02](https://github.com/ReactiveX/RxJS/commit/9922c02)) * **publish:** correct the name and republish to sync packages ([464b115](https://github.com/ReactiveX/RxJS/commit/464b115)) * **shareReplay:** no longer exporting function unnecessarily ([#2928](https://github.com/ReactiveX/RxJS/issues/2928)) ([e159578](https://github.com/ReactiveX/RxJS/commit/e159578)) * **shareReplay:** properly uses `lift` ([#2924](https://github.com/ReactiveX/RxJS/issues/2924)) ([3d9cf87](https://github.com/ReactiveX/RxJS/commit/3d9cf87)), closes [#2921](https://github.com/ReactiveX/RxJS/issues/2921) * **toPromise:** include toPromise in build output ([#2923](https://github.com/ReactiveX/RxJS/issues/2923)) ([f55bfa5](https://github.com/ReactiveX/RxJS/commit/f55bfa5)), closes [#2922](https://github.com/ReactiveX/RxJS/issues/2922) <a name="5.5.0-beta.5"></a> # [5.5.0-beta.5](https://github.com/ReactiveX/RxJS/compare/5.5.0-beta.4...v5.5.0-beta.5) (2017-10-06) ### Bug Fixes * **toPromise:** remove lettable version of toPromise ([031edca](https://github.com/ReactiveX/RxJS/commit/031edca)), closes [#2868](https://github.com/ReactiveX/RxJS/issues/2868) ### Features * **toPromise:** now exists as a permanent method on Observable ([2e49a5c](https://github.com/ReactiveX/RxJS/commit/2e49a5c)) <a name="5.5.0-beta.4"></a> # [5.5.0-beta.4](https://github.com/ReactiveX/RxJS/compare/5.5.0-beta.3...v5.5.0-beta.4) (2017-10-06) ### Bug Fixes * **publish:** fix selector typings ([#2891](https://github.com/ReactiveX/RxJS/issues/2891)) ([9ee234d](https://github.com/ReactiveX/RxJS/commit/9ee234d)), closes [#2889](https://github.com/ReactiveX/RxJS/issues/2889) * **shareReplay:** properly retains history on subscribe ([#2910](https://github.com/ReactiveX/RxJS/issues/2910)) ([accbcd0](https://github.com/ReactiveX/RxJS/commit/accbcd0)), closes [#2908](https://github.com/ReactiveX/RxJS/issues/2908) * **subscribeOn:** remove subscribeOn from reexport to support treesha… ([#2899](https://github.com/ReactiveX/RxJS/issues/2899)) ([fb51a02](https://github.com/ReactiveX/RxJS/commit/fb51a02)) <a name="5.5.0-beta.3"></a> # [5.5.0-beta.3](https://github.com/ReactiveX/RxJS/compare/5.5.0-beta.2...v5.5.0-beta.3) (2017-10-03) ### Bug Fixes * **build:** revert to 5.4.x build output for CJS & add configurable support for ESM ([#2878](https://github.com/ReactiveX/RxJS/issues/2878)) ([167456a](https://github.com/ReactiveX/RxJS/commit/167456a)) * **concatAll:** use higher-order lettable version of concatAll ([60c96ab](https://github.com/ReactiveX/RxJS/commit/60c96ab)) * **mergeAll:** use higher-order lettable version of mergeAll ([f0b703b](https://github.com/ReactiveX/RxJS/commit/f0b703b)) <a name="5.5.0-beta.2"></a> # [5.5.0-beta.2](https://github.com/ReactiveX/RxJS/compare/5.5.0-beta.1...v5.5.0-beta.2) (2017-09-27) ### Bug Fixes * **build:** make CJS references to import X from '../operators' work correctly with SystemJS ([#2874](https://github.com/ReactiveX/RxJS/issues/2874)) ([3dd4cc4](https://github.com/ReactiveX/RxJS/commit/3dd4cc4)) <a name="5.5.0-beta.1"></a> # [5.5.0-beta.1](https://github.com/ReactiveX/RxJS/compare/5.5.0-beta.0...v5.5.0-beta.1) (2017-09-27) ### Bug Fixes * **package:** published from a Linux machine to prevent a strange issue where the Observable directory was not showing up when installed on some Linux environments. * **build:** fix source maps by adding back sources and fixing path ([#2872](https://github.com/ReactiveX/RxJS/issues/2872)) ([daaf424](https://github.com/ReactiveX/RxJS/commit/daaf424)) * **package:** remove src directory and fix typings location ([#2866](https://github.com/ReactiveX/RxJS/issues/2866)) ([c57eea7](https://github.com/ReactiveX/RxJS/commit/c57eea7)) ### Features * **global:** export lettables as Rx.operators ([#2862](https://github.com/ReactiveX/RxJS/issues/2862)) ([ba2f586](https://github.com/ReactiveX/RxJS/commit/ba2f586)), closes [#2861](https://github.com/ReactiveX/RxJS/issues/2861) <a name="5.5.0-beta.0"></a> # [5.5.0-beta.0](https://github.com/ReactiveX/RxJS/compare/5.4.3...5.5.0-beta.0) (2017-09-22) **Important! Checkout the explanation of the new [lettable operators features here](doc/lettable-operators.md)** ### Bug Fixes * **package:** correct errors generated during rollup for UMD generation ([#2839](https://github.com/ReactiveX/RxJS/issues/2839)) ([124cc93](https://github.com/ReactiveX/RxJS/commit/124cc93)) * **partition:** update TypeScript signature to match docs and filter operator ([#2819](https://github.com/ReactiveX/RxJS/issues/2819)) ([755df9b](https://github.com/ReactiveX/RxJS/commit/755df9b)) * **subscribeToResult:** throw error in subscriber with inner observable ([d7bffa9](https://github.com/ReactiveX/RxJS/commit/d7bffa9)), closes [#2618](https://github.com/ReactiveX/RxJS/issues/2618) ### Features * **ajax:** Include the response on instances of AjaxError ([3f6553c](https://github.com/ReactiveX/RxJS/commit/3f6553c)) * **audit:** add higher-order lettable version of audit ([e2daefe](https://github.com/ReactiveX/RxJS/commit/e2daefe)) * **auditTime:** add higher-order lettable version of auditTime ([9e963aa](https://github.com/ReactiveX/RxJS/commit/9e963aa)) * **buffer:** add higher-order lettable version of buffer ([d8ca9de](https://github.com/ReactiveX/RxJS/commit/d8ca9de)) * **bufferCount:** add higher-order lettable version of bufferCount ([0ae2ed5](https://github.com/ReactiveX/RxJS/commit/0ae2ed5)) * **bufferTime:** add higher-order lettable version of bufferTime operator ([0377ca6](https://github.com/ReactiveX/RxJS/commit/0377ca6)) * **bufferToggle:** add higher-order lettable version of bufferToggle ([ea1c3ee](https://github.com/ReactiveX/RxJS/commit/ea1c3ee)) * **bufferWhen:** add higher-order lettable version of bufferWhen ([ec3eceb](https://github.com/ReactiveX/RxJS/commit/ec3eceb)) * **catchError:** add higher-order lettable version of `catch` ([408a2af](https://github.com/ReactiveX/RxJS/commit/408a2af)) * **combineAll:** add higher-order lettable version of combineAll ([97704b3](https://github.com/ReactiveX/RxJS/commit/97704b3)) * **combineLatest:** add higher-order lettable version of combineLatest ([b7154f2](https://github.com/ReactiveX/RxJS/commit/b7154f2)) * **concatMap:** add higher-order lettable version of concatMap ([c4125ff](https://github.com/ReactiveX/RxJS/commit/c4125ff)) * **concatMapTo:** add higher-order lettable version of concatMapTo ([0a6672e](https://github.com/ReactiveX/RxJS/commit/0a6672e)) * **count:** add higher-order lettable version of count ([caf713e](https://github.com/ReactiveX/RxJS/commit/caf713e)) * **debounce:** add higher-order lettable version of debounce ([cb8ce46](https://github.com/ReactiveX/RxJS/commit/cb8ce46)) * **debounceTime:** add higher-order lettable version of debounceTime ([df0d439](https://github.com/ReactiveX/RxJS/commit/df0d439)) * **delay:** add higher-order lettable version of delay ([7efb803](https://github.com/ReactiveX/RxJS/commit/7efb803)) * **delayWhen:** add higher-order lettable version of delayWhen ([cb91c3f](https://github.com/ReactiveX/RxJS/commit/cb91c3f)) * **dematerialize:** add higher-ordeer lettable version of dematerialize ([b5948f9](https://github.com/ReactiveX/RxJS/commit/b5948f9)) * **distinct:** add higher-order lettable version of distinct ([0429a69](https://github.com/ReactiveX/RxJS/commit/0429a69)) * **distinctUntilChanged:** add higher-order lettable version of distinctUntilChanged ([b2725e7](https://github.com/ReactiveX/RxJS/commit/b2725e7)) * **distinctUntilKeyChanged:** add higher-order lettable version of distinctUntilKeyChanged ([9db141c](https://github.com/ReactiveX/RxJS/commit/9db141c)) * **elementAt:** add higher-order lettable version of elementAt ([b8e956b](https://github.com/ReactiveX/RxJS/commit/b8e956b)) * **every:** add higher-order lettable version of every ([13f3503](https://github.com/ReactiveX/RxJS/commit/13f3503)) * **exhaust:** add higher-order lettable version of exhaust ([b145dca](https://github.com/ReactiveX/RxJS/commit/b145dca)) * **exhaustMap:** add higher-order lettable exhaustMap ([b134e0c](https://github.com/ReactiveX/RxJS/commit/b134e0c)) * **expand:** add higher-order lettable expand ([6ec8a19](https://github.com/ReactiveX/RxJS/commit/6ec8a19)) * **filter:** add higher-order lettable version of filter ([2848556](https://github.com/ReactiveX/RxJS/commit/2848556)) * **finalize:** add higher-order lettable version of finally, called finalize ([cfeae9f](https://github.com/ReactiveX/RxJS/commit/cfeae9f)) * **find:** add higher-order lettable version of find ([ff6d5af](https://github.com/ReactiveX/RxJS/commit/ff6d5af)) * **findIndex:** add higher-order lettable findIndex ([40e680e](https://github.com/ReactiveX/RxJS/commit/40e680e)) * **first:** add higher-order lettable first ([33eac1e](https://github.com/ReactiveX/RxJS/commit/33eac1e)) * **groupBy:** add higher-order lettable groupBy ([5281229](https://github.com/ReactiveX/RxJS/commit/5281229)) * **ignoreElements:** add higher-order lettable version of ignoreElements ([68286d4](https://github.com/ReactiveX/RxJS/commit/68286d4)) * **isEmpty:** add higher-order lettable version of isEmpty ([aad1833](https://github.com/ReactiveX/RxJS/commit/aad1833)) * **last:** add higher-order lettable version of last ([bf33b97](https://github.com/ReactiveX/RxJS/commit/bf33b97)) * **lettables:** add higher-order lettable versions of concat, concatAll, mergeAll ([d7e8be7](https://github.com/ReactiveX/RxJS/commit/d7e8be7)) * **map:** add higher-order lettable map operator ([ce40b2d](https://github.com/ReactiveX/RxJS/commit/ce40b2d)) * **mapTo:** add higher-order lettable version of mapTo ([e97530f](https://github.com/ReactiveX/RxJS/commit/e97530f)) * **materialize:** add higher-order lettable materialize operator ([ce42477](https://github.com/ReactiveX/RxJS/commit/ce42477)) * **merge:** add higher-order lettable version of merge ([#2809](https://github.com/ReactiveX/RxJS/issues/2809)) ([3136403](https://github.com/ReactiveX/RxJS/commit/3136403)) * **mergeMap:** add higher-order lettable version of mergeMap ([417efde](https://github.com/ReactiveX/RxJS/commit/417efde)) * **mergeMapTo:** add higher-order lettable version of mergeMapTo ([653b47a](https://github.com/ReactiveX/RxJS/commit/653b47a)) * **mergeScan:** add higher-order lettable version of mergeScan ([fde7205](https://github.com/ReactiveX/RxJS/commit/fde7205)) * **multicast:** add higher-order lettable variant of multicast ([fb6014d](https://github.com/ReactiveX/RxJS/commit/fb6014d)) * **observeOn:** add higher-order lettable version of observeOn ([feb0f5a](https://github.com/ReactiveX/RxJS/commit/feb0f5a)) * **onErrorResumeNext:** add higher-order lettable version of onErrorResumeNext ([badec6a](https://github.com/ReactiveX/RxJS/commit/badec6a)) * **operators:** higher-order lettables of reduce, min, max and defaultIfEmpty added ([9974fc2](https://github.com/ReactiveX/RxJS/commit/9974fc2)) * **package:** rxjs distribution now supports main, module and es2015 keys in package.json ([988e1af](https://github.com/ReactiveX/RxJS/commit/988e1af)) * **pairwise:** add higher-order lettable version of pairwise ([bb21a44](https://github.com/ReactiveX/RxJS/commit/bb21a44)) * **partition:** add higher-order lettable version of partition ([595e588](https://github.com/ReactiveX/RxJS/commit/595e588)) * **pipe:** add pipe method ot Observable ([9f6312d](https://github.com/ReactiveX/RxJS/commit/9f6312d)) * **pipe:** add pipe utility function([42f9daf](https://github.com/ReactiveX/RxJS/commit/42f9daf)) * **pluck:** add higher-order lettable version of pluck ([8ab0914](https://github.com/ReactiveX/RxJS/commit/8ab0914)) * **publish:** add higher-order lettable variant of publish ([4ccf794](https://github.com/ReactiveX/RxJS/commit/4ccf794)) * **publishBehavior:** add higher-order lettable version of publishBehavior ([e911aef](https://github.com/ReactiveX/RxJS/commit/e911aef)) * **publishLast:** add higher-order lettable version of publishLast ([684728c](https://github.com/ReactiveX/RxJS/commit/684728c)) * **publishReplay:** add higher-order lettable version of publishReplay ([2958917](https://github.com/ReactiveX/RxJS/commit/2958917)) * **race:** add higher-order lettable version of race ([e646851](https://github.com/ReactiveX/RxJS/commit/e646851)) * **refCount:** add higher-order lettable version of refCount ([21fba63](https://github.com/ReactiveX/RxJS/commit/21fba63)) * **repeat:** add higher-order lettable version of repeat ([8473fe5](https://github.com/ReactiveX/RxJS/commit/8473fe5)) * **repeatWhen:** add higher-order lettable version of repeatWhen ([1d1cecd](https://github.com/ReactiveX/RxJS/commit/1d1cecd)) * **retry:** add higher-order lettable version of retry ([28e9b13](https://github.com/ReactiveX/RxJS/commit/28e9b13)) * **retryWhen:** add higher-order lettable version of retryWhen ([1290e3c](https://github.com/ReactiveX/RxJS/commit/1290e3c)) * **sample:** add higher-order lettable version of sample ([8c73e6e](https://github.com/ReactiveX/RxJS/commit/8c73e6e)) * **sampleTime:** add higher-order lettable version of sampleTime ([ba6a9ce](https://github.com/ReactiveX/RxJS/commit/ba6a9ce)) * **scan:** add higher-order lettable version of scan ([2cc5d75](https://github.com/ReactiveX/RxJS/commit/2cc5d75)) * **sequenceEqual:** add higher-order lettable version of sequenceEqual ([7cd3165](https://github.com/ReactiveX/RxJS/commit/7cd3165)) * **share:** add higher-order lettable version of share ([f10c42e](https://github.com/ReactiveX/RxJS/commit/f10c42e)) * **shareReplay:** add higher-order lettable version of shareReplay ([e8be197](https://github.com/ReactiveX/RxJS/commit/e8be197)) * **single:** add higher-order lettable version of single ([3bc050a](https://github.com/ReactiveX/RxJS/commit/3bc050a)) * **skip:** add higher-order lettable version of skip ([baed383](https://github.com/ReactiveX/RxJS/commit/baed383)) * **skipLast:** add higher-order lettable version of skipLast ([6e1ff3c](https://github.com/ReactiveX/RxJS/commit/6e1ff3c)) * **skipUntil:** add higher-order lettable version of skipUntil ([6cc2cd6](https://github.com/ReactiveX/RxJS/commit/6cc2cd6)) * **skipWhile:** add higher-order lettable version of skipWhile ([76d8ffa](https://github.com/ReactiveX/RxJS/commit/76d8ffa)) * **subscribeOn:** add higher-order lettable version of subscribeOn ([866af37](https://github.com/ReactiveX/RxJS/commit/866af37)) * **switchAll:** add higher-order lettable version of switch ([2f12572](https://github.com/ReactiveX/RxJS/commit/2f12572)) * **switchMap:** add higher-order lettable version of switchMap ([b6e5b56](https://github.com/ReactiveX/RxJS/commit/b6e5b56)) * **switchMapTo:** add higher-order lettable version of switchMapTo ([2640184](https://github.com/ReactiveX/RxJS/commit/2640184)) * **take:** add higher-order lettable version of take ([089a5a6](https://github.com/ReactiveX/RxJS/commit/089a5a6)) * **takeLast:** add higher-order lettable version of takeLast ([cd7e7dd](https://github.com/ReactiveX/RxJS/commit/cd7e7dd)) * **takeUntil:** add higher-order lettable version of takeUntil ([bb2ddaa](https://github.com/ReactiveX/RxJS/commit/bb2ddaa)) * **takeWhile:** add higher-order lettable version of takeWhile ([f86c862](https://github.com/ReactiveX/RxJS/commit/f86c862)) * **tap:** add higher-order lettable version of do ([f85c60e](https://github.com/ReactiveX/RxJS/commit/f85c60e)) * **throttle:** add higher-order lettable version of throttle ([e4dd1fd](https://github.com/ReactiveX/RxJS/commit/e4dd1fd)) * **throttleTime:** add higher-order lettable version of throttleTime ([34a592d](https://github.com/ReactiveX/RxJS/commit/34a592d)) * **timeInterval:** add higher-order lettable version of timeInterval ([fcad034](https://github.com/ReactiveX/RxJS/commit/fcad034)) * **timeout:** add higher-order lettable version of timeout ([2546750](https://github.com/ReactiveX/RxJS/commit/2546750)) * **timeoutWith:** add higher-order lettable version of timeoutWith ([bd7f5ed](https://github.com/ReactiveX/RxJS/commit/bd7f5ed)) * **timestamp:** add higher-order lettable version of timestamp ([a780bf2](https://github.com/ReactiveX/RxJS/commit/a780bf2)) * **toArray:** add higher-order lettable version of toArray ([82480cf](https://github.com/ReactiveX/RxJS/commit/82480cf)) * **toArray:** add higher-order lettable version of toArray ([a03a50c](https://github.com/ReactiveX/RxJS/commit/a03a50c)) * **toPromise:** add higher-order lettable version of toPromise ([1627da2](https://github.com/ReactiveX/RxJS/commit/1627da2)) * **window:** add higher-order lettable version of window ([9f6373e](https://github.com/ReactiveX/RxJS/commit/9f6373e)) * **windowCount:** add higher-order lettable version of windowCount ([2a9e54c](https://github.com/ReactiveX/RxJS/commit/2a9e54c)) * **windowTime:** add higher-order lettable version of windowTime ([29ffa1b](https://github.com/ReactiveX/RxJS/commit/29ffa1b)) * **windowToggle:** add higher-order lettable version of windowToggle ([81ec389](https://github.com/ReactiveX/RxJS/commit/81ec389)) * **windowWhen:** add higher-order lettable version of windowWhen ([0b73208](https://github.com/ReactiveX/RxJS/commit/0b73208)) * **withLatestFrom:** add higher-order lettable version of withLatestFrom ([509c97c](https://github.com/ReactiveX/RxJS/commit/509c97c)) * **zip:** add higher-order lettable version of zip ([8a9b9b2](https://github.com/ReactiveX/RxJS/commit/8a9b9b2)) * **zipAll:** add higher-order lettable version of zipAll ([f6bd51f](https://github.com/ReactiveX/RxJS/commit/f6bd51f)) <a name="5.4.3"></a> ## [5.4.3](https://github.com/ReactiveX/RxJS/compare/5.4.2...v5.4.3) (2017-08-10) ### Bug Fixes * **compilation:** compiles under typescript 2.4.2 ([#2780](https://github.com/ReactiveX/RxJS/issues/2780)) ([d2a32f9](https://github.com/ReactiveX/RxJS/commit/d2a32f9)) * **exports:** add exports for missing static operators: generate, ([08c4196](https://github.com/ReactiveX/RxJS/commit/08c4196)) <a name="5.4.2"></a> ## [5.4.2](https://github.com/ReactiveX/RxJS/compare/5.4.1...v5.4.2) (2017-07-05) ### Bug Fixes * **Notification:** Don't reference `this` from static methods. ([9f8e375](https://github.com/ReactiveX/RxJS/commit/9f8e375)) * **Subject:** lift signature is now appropriate for stricter TypeScript 2.4 checks ([#2722](https://github.com/ReactiveX/RxJS/issues/2722)) ([9804de7](https://github.com/ReactiveX/RxJS/commit/9804de7)) <a name="5.4.1"></a> ## [5.4.1](https://github.com/ReactiveX/RxJS/compare/5.4.0...v5.4.1) (2017-06-14) ### Bug Fixes * **ajax:** Only set timeout & responseType if request is asynchronous ([#2486](https://github.com/ReactiveX/RxJS/issues/2486)) ([380fbcf](https://github.com/ReactiveX/RxJS/commit/380fbcf)) * **audit:** will now properly mirror source if durations are Observable.empty() ([#2595](https://github.com/ReactiveX/RxJS/issues/2595)) ([6ded82e](https://github.com/ReactiveX/RxJS/commit/6ded82e)) * **elementAt:** will now properly unsubscribe when it completes or errors ([#2501](https://github.com/ReactiveX/RxJS/issues/2501)) ([a400cab](https://github.com/ReactiveX/RxJS/commit/a400cab)) * **ErrorObservable:** will now propagate errors properly when used in a `catch` after `fromPromise`. ([#2552](https://github.com/ReactiveX/RxJS/issues/2552)) ([cf88a20](https://github.com/ReactiveX/RxJS/commit/cf88a20)) * **groupBy:** group duration notifiers will now properly unsubscribe and clean up ([#2662](https://github.com/ReactiveX/RxJS/issues/2662)) ([ab92083](https://github.com/ReactiveX/RxJS/commit/ab92083)), closes [#2660](https://github.com/ReactiveX/RxJS/issues/2660) [#2661](https://github.com/ReactiveX/RxJS/issues/2661) * **Observable:** errors thrown in observer/handlers without an operator applied will no longer be swallowed ([#2626](https://github.com/ReactiveX/RxJS/issues/2626)) ([c250afc](https://github.com/ReactiveX/RxJS/commit/c250afc)), closes [#2565](https://github.com/ReactiveX/RxJS/issues/2565) * **reduce:** type definitions overloads for TypeScript are now in proper order ([#2523](https://github.com/ReactiveX/RxJS/issues/2523)) ([ccc0647](https://github.com/ReactiveX/RxJS/commit/ccc0647)) * **Schedulers:** Fix issue where canceling an asap or animationFrame action early could throw ([#2638](https://github.com/ReactiveX/RxJS/issues/2638)) ([fc39043](https://github.com/ReactiveX/RxJS/commit/fc39043)) <a name="5.4.0"></a> # [5.4.0](https://github.com/ReactiveX/RxJS/) (2017-05-09) ### Features * **shareReplay:** adds `shareReplay` variant of `publishReplay` ([#2443](https://github.com/ReactiveX/RxJS/issues/2443)) ([5a2266a](https://github.com/ReactiveX/RxJS/commit/5a2266a)) * **skipLast:** add skipLast operator ([#2316](https://github.com/ReactiveX/RxJS/issues/2316)) ([4ffbbe5](https://github.com/ReactiveX/RxJS/commit/4ffbbe5)), closes [#1404](https://github.com/ReactiveX/RxJS/issues/1404) * **TypeScript:** fromPromise accepts PromiseLike object ([#2505](https://github.com/ReactiveX/RxJS/issues/2505)) ([ade1fd5](https://github.com/ReactiveX/RxJS/commit/ade1fd5)) <a name="5.3.3"></a> ## [5.3.3](https://github.com/ReactiveX/RxJS/compare/5.3.1...5.3.3) (2017-05-09) ### Bug Fixes * **delayWhen:** correctly handle synchronous duration observable ([#2589](https://github.com/ReactiveX/RxJS/issues/2589)) ([695f280](https://github.com/ReactiveX/RxJS/commit/695f280)), closes [#2587](https://github.com/ReactiveX/RxJS/issues/2587) * **race:** allow TypeScript support for array of observables other than rest param ([#2548](https://github.com/ReactiveX/RxJS/issues/2548)) ([ace553c](https://github.com/ReactiveX/RxJS/commit/ace553c)) * **Subscriber:** do not call complete with undefined value param ([#2559](https://github.com/ReactiveX/RxJS/issues/2559)) ([3d63de2](https://github.com/ReactiveX/RxJS/commit/3d63de2)) **(NOTE: 5.3.2 was a broken release and was removed)** <a name="5.3.1"></a> ## [5.3.1](https://github.com/ReactiveX/RxJS/compare/5.3.0...v5.3.1) (2017-05-02) ### Bug Fixes * **AsyncAction:** rescheduling an action with the same delay before it has executed will now schedule appropriately. ([#2580](https://github.com/ReactiveX/RxJS/issues/2580)) ([281760e](https://github.com/ReactiveX/RxJS/commit/281760e)) * **closure:** make root.ts work with closure ([#2546](https://github.com/ReactiveX/RxJS/issues/2546)) ([0ecf55d](https://github.com/ReactiveX/RxJS/commit/0ecf55d)) * **tests:** add missing babel-polyfill to package.json ([b277ce9](https://github.com/ReactiveX/RxJS/commit/b277ce9)), closes [#2261](https://github.com/ReactiveX/RxJS/issues/2261) * **withLatestFrom:** change from hot to cold observable in marble test ([0c65446](https://github.com/ReactiveX/RxJS/commit/0c65446)), closes [#2526](https://github.com/ReactiveX/RxJS/issues/2526) <a name="5.3.0"></a> # [5.3.0](https://github.com/ReactiveX/RxJS/compare/5.2.0...v5.3.0) (2017-04-03) ### Bug Fixes * **catch:** return type is now the union of input types ([#2478](https://github.com/ReactiveX/RxJS/issues/2478)) ([840def0](https://github.com/ReactiveX/RxJS/commit/840def0)) * **forEach:** fix a temporal dead zone issue in forEach. ([#2474](https://github.com/ReactiveX/RxJS/issues/2474)) ([e9e9801](https://github.com/ReactiveX/RxJS/commit/e9e9801)) * **multicast:** Ensure ConnectableObservables returned by multicast are state-isolated. ([aaa9e6b](https://github.com/ReactiveX/RxJS/commit/aaa9e6b)) * **reduce:** proper TypeScript signature overload ordering ([#2382](https://github.com/ReactiveX/RxJS/issues/2382)) ([f6a4951](https://github.com/ReactiveX/RxJS/commit/f6a4951)), closes [#2338](https://github.com/ReactiveX/RxJS/issues/2338) * **SafeSubscriber:** SafeSubscriber shouldn't mutate incoming Observers. ([a1778e0](https://github.com/ReactiveX/RxJS/commit/a1778e0)) * **timeout:** Cancels scheduled timeout, if no longer needed ([3e9d529](https://github.com/ReactiveX/RxJS/commit/3e9d529)), closes [#2134](https://github.com/ReactiveX/RxJS/issues/2134) [#2244](https://github.com/ReactiveX/RxJS/issues/2244) [#2355](https://github.com/ReactiveX/RxJS/issues/2355) [#2347](https://github.com/ReactiveX/RxJS/issues/2347) [#2353](https://github.com/ReactiveX/RxJS/issues/2353) [#2254](https://github.com/ReactiveX/RxJS/issues/2254) [#2372](https://github.com/ReactiveX/RxJS/issues/2372) [#1301](https://github.com/ReactiveX/RxJS/issues/1301) * **zipAll:** complete when the source is empty ([712fece](https://github.com/ReactiveX/RxJS/commit/712fece)) ### Features * **delayWhen:** add index to the selector function ([5d6291e](https://github.com/ReactiveX/RxJS/commit/5d6291e)) * **symbol exports:** symbols now also exported without `$$` prefix to work with Babel UMD exporting ([#2435](https://github.com/ReactiveX/RxJS/issues/2435)) ([747bef6](https://github.com/ReactiveX/RxJS/commit/747bef6)), closes [#2415](https://github.com/ReactiveX/RxJS/issues/2415) ### Performance Improvements * **bufferCount:** optimize bufferCount operator ([#2359](https://github.com/ReactiveX/RxJS/issues/2359)) ([28d0883](https://github.com/ReactiveX/RxJS/commit/28d0883)) ### April Fools * **smooth:** `smooth()` was never really a thing. Sorry, folks. :D <a name="5.2.0"></a> # [5.2.0](https://github.com/ReactiveX/RxJS/compare/5.1.1...v5.2.0) (2017-02-21) ### Bug Fixes * **ajax:** will set `withCredentials` after `open` on XHR for IE10 ([#2332](https://github.com/ReactiveX/RxJS/issues/2332)) ([0ab1d3b](https://github.com/ReactiveX/RxJS/commit/0ab1d3b)) * **bindCallback:** emit undefined when callback is without arguments ([915a2a8](https://github.com/ReactiveX/RxJS/commit/915a2a8)) * **bindNodeCallback:** emit undefined when callback has no success arguments ([8b81fc6](https://github.com/ReactiveX/RxJS/commit/8b81fc6)), closes [#2254](https://github.com/ReactiveX/RxJS/issues/2254) * **bindNodeCallback:** errors thrown in callback will be scheduled if a scheduler is provided ([#2344](https://github.com/ReactiveX/RxJS/issues/2344)) ([82ec4f1](https://github.com/ReactiveX/RxJS/commit/82ec4f1)) * **concat:** will now return Observable when given a single object implementing Symbol.observable ([#2387](https://github.com/ReactiveX/RxJS/issues/2387)) ([f5d035a](https://github.com/ReactiveX/RxJS/commit/f5d035a)) * **ErrorObservable:** remove type constraint to error value ([2f951cd](https://github.com/ReactiveX/RxJS/commit/2f951cd)), closes [#2395](https://github.com/ReactiveX/RxJS/issues/2395) * **forkJoin:** add type signature for single observable with selector ([7983b91](https://github.com/ReactiveX/RxJS/commit/7983b91)), closes [#2347](https://github.com/ReactiveX/RxJS/issues/2347) * **merge:** return Observable when called with single lowerCaseO ([85752eb](https://github.com/ReactiveX/RxJS/commit/85752eb)) * **mergeAll:** introduce variant support <T, R> for mergeMap ([656f2b3](https://github.com/ReactiveX/RxJS/commit/656f2b3)), closes [#2372](https://github.com/ReactiveX/RxJS/issues/2372) * **single:** predicate function receives indicies starting at 0 ([#2396](https://github.com/ReactiveX/RxJS/issues/2396)) ([c81882f](https://github.com/ReactiveX/RxJS/commit/c81882f)) * **subscribeToResult:** accept array-like as result ([14685ba](https://github.com/ReactiveX/RxJS/commit/14685ba)) ### Features * **webSocket:** Add binaryType to config object ([86acbd1](https://github.com/ReactiveX/RxJS/commit/86acbd1)), closes [#2353](https://github.com/ReactiveX/RxJS/issues/2353) * **windowTime:** maxWindowSize parameter in windowTime operator ([381be3f](https://github.com/ReactiveX/RxJS/commit/381be3f)), closes [#1301](https://github.com/ReactiveX/RxJS/issues/1301) <a name="5.1.1"></a> ## [5.1.1](https://github.com/ReactiveX/RxJS/compare/5.1.0...v5.1.1) (2017-02-13) ### Bug Fixes * **bindCallback:** input function context can now be properly set via output function ([#2319](https://github.com/ReactiveX/RxJS/issues/2319)) ([cb91c76](https://github.com/ReactiveX/RxJS/commit/cb91c76)) * **bindNodeCallback:** input function context can now be properly set via output function ([#2320](https://github.com/ReactiveX/RxJS/issues/2320)) ([3ec315d](https://github.com/ReactiveX/RxJS/commit/3ec315d)) * **Subscription:** fold ChildSubscription logic into Subscriber to prevent operators from leaking ChildSubscriptions. ([#2360](https://github.com/ReactiveX/RxJS/issues/2360)) ([22e4c17](https://github.com/ReactiveX/RxJS/commit/22e4c17)), closes [#2244](https://github.com/ReactiveX/RxJS/issues/2244) [#2355](https://github.com/ReactiveX/RxJS/issues/2355) <a name="5.1.0"></a> # [5.1.0](https://github.com/ReactiveX/RxJS/compare/5.0.3...v5.1.0) (2017-02-01) ### Bug Fixes * **catch:** update the catch operator to dispose inner subscriptions if the catch subscription is di ([#2271](https://github.com/ReactiveX/RxJS/issues/2271)) ([8a1e089](https://github.com/ReactiveX/RxJS/commit/8a1e089)) * **combineLatest:** Don't mutate array of observables passed to ([#2276](https://github.com/ReactiveX/RxJS/issues/2276)) ([9b73c46](https://github.com/ReactiveX/RxJS/commit/9b73c46)) * **ISubscription:** update type definition of ISubscription::closed ([#2249](https://github.com/ReactiveX/RxJS/issues/2249)) ([0c304a2](https://github.com/ReactiveX/RxJS/commit/0c304a2)) * **Observable:** Ensure the generic type of the Observer passed to Observable's initializer function is the same. ([51a0bc1](https://github.com/ReactiveX/RxJS/commit/51a0bc1)), closes [#2166](https://github.com/ReactiveX/RxJS/issues/2166) * **Observable:** errors thrown during subscription are now properly sent down error channel ([#2313](https://github.com/ReactiveX/RxJS/issues/2313)) ([d4a9aac](https://github.com/ReactiveX/RxJS/commit/d4a9aac)), closes [#1833](https://github.com/ReactiveX/RxJS/issues/1833) * **reduce:** index will properly start at 1 if no seed is provided, to match native Array reduce behavior ([30a4ca4](https://github.com/ReactiveX/RxJS/commit/30a4ca4)), closes [#2290](https://github.com/ReactiveX/RxJS/issues/2290) * **repeatWhen:** resulting observable will wait for the source to complete, even if a hot notifier completes first. ([#2209](https://github.com/ReactiveX/RxJS/issues/2209)) ([c65a098](https://github.com/ReactiveX/RxJS/commit/c65a098)), closes [#2054](https://github.com/ReactiveX/RxJS/issues/2054) * **Subject:** ensure subject properly throws ObjectUnsubscribedError when unsubscribed then resubscribed to ([#2318](https://github.com/ReactiveX/RxJS/issues/2318)) ([41489eb](https://github.com/ReactiveX/RxJS/commit/41489eb)) * **TestScheduler:** helper methods return proper types, `HotObservable` and `ColdObservable` instead of Observable ([#2305](https://github.com/ReactiveX/RxJS/issues/2305)) ([758aae9](https://github.com/ReactiveX/RxJS/commit/758aae9)) * **windowTime:** ensure windows created when only a timespan is passed are closed and cleaned up properly. ([#2278](https://github.com/ReactiveX/RxJS/issues/2278)) ([d4533c4](https://github.com/ReactiveX/RxJS/commit/d4533c4)) ### Features * **fromEventPattern:** support optional removeHandler ([86960c2](https://github.com/ReactiveX/RxJS/commit/86960c2)) * **fromEventPattern:** support pass signal from addHandler to removeHandler ([01d0622](https://github.com/ReactiveX/RxJS/commit/01d0622)) <a name="5.0.3"></a> ## [5.0.3](https://github.com/ReactiveX/RxJS/compare/5.0.2...v5.0.3) (2017-01-05) ### Bug Fixes * **observeOn:** seal memory leak involving old notifications ([9664a38](https://github.com/ReactiveX/RxJS/commit/9664a38)), closes [#2244](https://github.com/ReactiveX/RxJS/issues/2244) * **Subscription:** `add` will return Subscription that `remove`s itself when unsubscribed ([375d4a5](https://github.com/ReactiveX/RxJS/commit/375d4a5)) * **TypeScript:** interfaces that accepted `Scheduler` now accept `IScheduler` interface ([a0d28a8](https://github.com/ReactiveX/RxJS/commit/a0d28a8)) <a name="5.0.2"></a> ## [5.0.2](https://github.com/ReactiveX/RxJS/compare/5.0.1...v5.0.2) (2016-12-23) ### Bug Fixes * **ajax:** upload progress is now set correctly ([#2200](https://github.com/ReactiveX/RxJS/issues/2200)) ([1a83041](https://github.com/ReactiveX/RxJS/commit/1a83041)) * **groupBy:** Fix groupBy to dispose of outer subscription. ([#2201](https://github.com/ReactiveX/RxJS/issues/2201)) ([2269618](https://github.com/ReactiveX/RxJS/commit/2269618)) <a name="5.0.1"></a> ## [5.0.1](https://github.com/ReactiveX/RxJS/compare/5.0.0...v5.0.1) (2016-12-13) ### Bug Fixes * **TypeScript:** pin to TypeScript 2.0.x, fix errors with Error subclassing ([300504c](https://github.com/ReactiveX/RxJS/commit/300504c)) <a name="5.0.0"></a> # [5.0.0](https://github.com/ReactiveX/RxJS/compare/5.0.0-rc.5...v5.0.0) (2016-12-13) ### Bug Fixes * **race:** unsubscribe raced observables with immediate scheduler ([#2158](https://github.com/ReactiveX/RxJS/issues/2158)) ([7dd533b](https://github.com/ReactiveX/RxJS/commit/7dd533b)) * **SubscribeOnObservable:** Add the source subscription to the action disposable so the source will ([64e3815](https://github.com/ReactiveX/RxJS/commit/64e3815)) <a name="5.0.0-rc.5"></a> # [5.0.0-rc.5](https://github.com/ReactiveX/RxJS/compare/5.0.0-rc.4...v5.0.0-rc.5) (2016-12-07) ### Bug Fixes * **AjaxObservable:** catch XHR send failures to observer ([#2159](https://github.com/ReactiveX/RxJS/issues/2159)) ([128fb9c](https://github.com/ReactiveX/RxJS/commit/128fb9c)) * **distinctKey:** Removed accidental leftover reference of `distinctKey` ([9fd8096](https://github.com/ReactiveX/RxJS/commit/9fd8096)), closes [#2161](https://github.com/ReactiveX/RxJS/issues/2161) * **errors:** Better error message when you return non-observable things, ([#2152](https://github.com/ReactiveX/RxJS/issues/2152)) ([86a909c](https://github.com/ReactiveX/RxJS/commit/86a909c)), closes [#215](https://github.com/ReactiveX/RxJS/issues/215) * **event:** uses `Object.prototype.toString.call` on objects ([#2143](https://github.com/ReactiveX/RxJS/issues/2143)) ([e036e79](https://github.com/ReactiveX/RxJS/commit/e036e79)) * **typings:** type guard support for `last`, `first`, `find` and `filter`. ([5f2e849](https://github.com/ReactiveX/RxJS/commit/5f2e849)) ### Features * **timeout:** remove `errorToSend` argument, always throw TimeoutError ([#2172](https://github.com/ReactiveX/RxJS/issues/2172)) ([98ea3d2](https://github.com/ReactiveX/RxJS/commit/98ea3d2)) ### BREAKING CHANGES * timeout: `timeout` no longer accepts the `errorToSend` argument related #2141 <a name="5.0.0-rc.4"></a> # [5.0.0-rc.4](https://github.com/ReactiveX/RxJS/compare/5.0.0-rc.3...v5.0.0-rc.4) (2016-11-19) ### Bug Fixes * **partition:** handles `thisArg` as expected ([#2138](https://github.com/ReactiveX/RxJS/issues/2138)) ([6cf7296](https://github.com/ReactiveX/RxJS/commit/6cf7296)) * **timeout:** throw traceable TimeoutError ([#2132](https://github.com/ReactiveX/RxJS/issues/2132)) ([9ebc46b](https://github.com/ReactiveX/RxJS/commit/9ebc46b)) <a name="5.0.0-rc.3"></a> # [5.0.0-rc.3](https://github.com/ReactiveX/RxJS/compare/5.0.0-rc.2...v5.0.0-rc.3) (2016-11-15) ### Bug Fixes * **typings:** You no longer have to install the type definition for chai ([#2112](https://github.com/ReactiveX/rxjs/issues/2112)) ### Features * **filter:** support type guards without casting ([68b7922](https://github.com/ReactiveX/RxJS/commit/68b7922)) * **find:** support type guards without casting ([9058bf6](https://github.com/ReactiveX/RxJS/commit/9058bf6)) * **first:** support type guards without casting ([3aa1988](https://github.com/ReactiveX/RxJS/commit/3aa1988)) * **last:** support type guards without casting ([07ecd5e](https://github.com/ReactiveX/RxJS/commit/07ecd5e)) <a name="5.0.0-rc.2"></a> # [5.0.0-rc.2](https://github.com/ReactiveX/RxJS/compare/5.0.0-rc.1...v5.0.0-rc.2) (2016-11-05) ### Bug Fixes * **AjaxObservable:** remove needless type param R from AjaxObservable.getJSON() ([#2069](https://github.com/ReactiveX/RxJS/issues/2069)) ([0c3d4a4](https://github.com/ReactiveX/RxJS/commit/0c3d4a4)) * **bufferCount:** will behave as expected when `startBufferEvery` is less than `bufferSize` ([#2076](https://github.com/ReactiveX/RxJS/issues/2076)) ([d13dbb4](https://github.com/ReactiveX/RxJS/commit/d13dbb4)), closes [#2062](https://github.com/ReactiveX/RxJS/issues/2062) * **build_docs:** fix doc building ([#1974](https://github.com/ReactiveX/RxJS/issues/1974)) ([1bbbe8b](https://github.com/ReactiveX/RxJS/commit/1bbbe8b)) * **ErrorObservable:** Add generic error type for ErrorObservable. ([#2071](https://github.com/ReactiveX/RxJS/issues/2071)) ([9df86ba](https://github.com/ReactiveX/RxJS/commit/9df86ba)) * **first:** will now only emit one value in recursive cases ([#2100](https://github.com/ReactiveX/RxJS/issues/2100)) ([a047e7a](https://github.com/ReactiveX/RxJS/commit/a047e7a)), closes [#2098](https://github.com/ReactiveX/RxJS/issues/2098) * **fromEvent:** Throw if event target is invalid ([#2107](https://github.com/ReactiveX/RxJS/issues/2107)) ([147ce3e](https://github.com/ReactiveX/RxJS/commit/147ce3e)) * **IteratorObservable:** clarify the return type of IteratorObservable.create() ([#2070](https://github.com/ReactiveX/RxJS/issues/2070)) ([4f0f865](https://github.com/ReactiveX/RxJS/commit/4f0f865)) * **IteratorObservable:** Observables `from` generators will now finalize when subscription ends ([22d286a](https://github.com/ReactiveX/RxJS/commit/22d286a)), closes [#1938](https://github.com/ReactiveX/RxJS/issues/1938) * **multicast:** fix a bug that caused multicast to omit messages after termination ([#2021](https://github.com/ReactiveX/RxJS/issues/2021)) ([44fbc14](https://github.com/ReactiveX/RxJS/commit/44fbc14)) * **Notification:** `materialize` output will now match Rx4 ([#2106](https://github.com/ReactiveX/RxJS/issues/2106)) ([c83bab9](https://github.com/ReactiveX/RxJS/commit/c83bab9)), closes [#2105](https://github.com/ReactiveX/RxJS/issues/2105) * **Object.assign:** stop polyfilling Object assign ([#2080](https://github.com/ReactiveX/RxJS/issues/2080)) ([b5f8ab3](https://github.com/ReactiveX/RxJS/commit/b5f8ab3)) * **Observable/Ajax:** mount properties to origin readystatechange fn ([#2025](https://github.com/ReactiveX/RxJS/issues/2025)) ([76a9abb](https://github.com/ReactiveX/RxJS/commit/76a9abb)) * **operator/do:** fix typings ([9a40297](https://github.com/ReactiveX/RxJS/commit/9a40297)) * **reduce/scan:** both scan/reduce operators now accepts `undefined` itself as a valid seed ([#2050](https://github.com/ReactiveX/RxJS/issues/2050)) ([fee7585](https://github.com/ReactiveX/RxJS/commit/fee7585)), closes [#2047](https://github.com/ReactiveX/RxJS/issues/2047) * **ReplaySubject:** observer now subscribed prior to running subscription function ([#2046](https://github.com/ReactiveX/RxJS/issues/2046)) ([fea08e9](https://github.com/ReactiveX/RxJS/commit/fea08e9)), closes [#2044](https://github.com/ReactiveX/RxJS/issues/2044) * **sample:** source is now subscribed to before the notifier ([ffe99e8](https://github.com/ReactiveX/RxJS/commit/ffe99e8)), closes [#2075](https://github.com/ReactiveX/RxJS/issues/2075) * **Symbol.iterator:** will not polyfill Symbol iterator unless Symbol exists ([#2082](https://github.com/ReactiveX/RxJS/issues/2082)) ([1138c99](https://github.com/ReactiveX/RxJS/commit/1138c99)) * **typings:** fixed Subject<T>.lift to have the same shape as Observable<T>.lift ([b07f597](https://github.com/ReactiveX/RxJS/commit/b07f597)) * **WebSocketSubject.prototype.multiplex:** no longer nulls out socket after first unsubscribe ([#2039](https://github.com/ReactiveX/RxJS/issues/2039)) ([a5e9cfe](https://github.com/ReactiveX/RxJS/commit/a5e9cfe)), closes [#2037](https://github.com/ReactiveX/RxJS/issues/2037) ### Features * **distinct:** remove `distinctKey`, `distinct` signature change and perf improvements ([#2049](https://github.com/ReactiveX/RxJS/issues/2049)) ([89612b2](https://github.com/ReactiveX/RxJS/commit/89612b2)), closes [#2009](https://github.com/ReactiveX/RxJS/issues/2009) * **groupBy:** Adds subjectSelector argument to groupBy ([#2023](https://github.com/ReactiveX/RxJS/issues/2023)) ([f94ceb9](https://github.com/ReactiveX/RxJS/commit/f94ceb9)) * **typescript:** remove dependency to 3rd party es2015 definition ([#2027](https://github.com/ReactiveX/RxJS/issues/2027)) ([4c31974](https://github.com/ReactiveX/RxJS/commit/4c31974)), closes [#2016](https://github.com/ReactiveX/RxJS/issues/2016) ### BREAKING CHANGES * Notification: `Notification.prototype.exception` is now `Notification.prototype.error` to match Rx4 semantics * Symbol.iterator: RxJS will no longer polyfill `Symbol.iterator` if `Symbol` does not exist. This may break code that inadvertently relies on this behavior * Object.assign: RxJS will no longer polyfill `Object.assign`. It does not require `Object.assign` to function, however, your code may be inadvertently relying on this polyfill. * AjaxObservable: Observable.ajax.getJSON() now only supports a single type parameter, `getJSON<T>(url: string, headers?: Object): Observable<T>`. The extra type parameter it accepted previously was superfluous. * distinct: `distinctKey` has been removed. Use `distinct` * distinct: `distinct` operator has changed, first argument is an optional `keySelector`. The custom `compare` function is no longer supported. <a name="5.0.0-rc.1"></a> # [5.0.0-rc.1](https://github.com/ReactiveX/RxJS/compare/5.0.0-beta.12...v5.0.0-rc.1) (2016-10-11) ### Bug Fixes * **AjaxObservable:** Fix for [#1921](https://github.com/ReactiveX/RxJS/issues/1921) exposed AjaxObservable unsubscription error calling xhr.abort(). ([4d23f87](https://github.com/ReactiveX/RxJS/commit/4d23f87)) * **AnonymousSubject:** is now exposed on Rx namespace ([0a6f049](https://github.com/ReactiveX/RxJS/commit/0a6f049)), closes [#2002](https://github.com/ReactiveX/RxJS/issues/2002) * **bufferTime:** no errors with take after bufferTime with maxBufferSize ([ecec640](https://github.com/ReactiveX/RxJS/commit/ecec640)), closes [#1944](https://github.com/ReactiveX/RxJS/issues/1944) * **docs:** Fix esdoc for Observable.merge spread argument ([b794e9b](https://github.com/ReactiveX/RxJS/commit/b794e9b)) * **Observer:** fix Observable#subscribe() signature to suggest correct usable ([459d2a2](https://github.com/ReactiveX/RxJS/commit/459d2a2)) * **operator:** Fix take to complete when the source is re-entrant. ([86615cb](https://github.com/ReactiveX/RxJS/commit/86615cb)) * **root:** find global context (window/self/global) in a more safe way ([a098132](https://github.com/ReactiveX/RxJS/commit/a098132)), closes [#1930](https://github.com/ReactiveX/RxJS/issues/1930) * **schedulers:** Queue, Asap, and AnimationFrame Schedulers should be Async if delay > 0 ([d5c682c](https://github.com/ReactiveX/RxJS/commit/d5c682c)) * **util/toSubscriber:** Supplies the Subscriber constructor with emptyObserver as destination if no ([8e7e4e3](https://github.com/ReactiveX/RxJS/commit/8e7e4e3)) * **WebSocketSubject:** ensure all internal state properly reset when socket is nulled out ([62d242e](https://github.com/ReactiveX/RxJS/commit/62d242e)), closes [#1863](https://github.com/ReactiveX/RxJS/issues/1863) ### Features * **cache:** remove `cache` operator ([1b23ace](https://github.com/ReactiveX/RxJS/commit/1b23ace)) * **ES2015:** stop publishing `rxjs-es`, ES2015 output no longer included in `@reactivex/rxjs` package under `/dist/es6` ([6be9968](https://github.com/ReactiveX/RxJS/commit/6be9968)), closes [#1671](https://github.com/ReactiveX/RxJS/issues/1671) * **filter:** Observable<T>.filter() can take type guard as the predicate function ([d62fbf0](https://github.com/ReactiveX/RxJS/commit/d62fbf0)) * **find:** Observable<T>.find() can take type guard as the predicate function ([b952718](https://github.com/ReactiveX/RxJS/commit/b952718)) * **first:** Observable<T>.first() can take type guard as the predicate function ([f99ca49](https://github.com/ReactiveX/RxJS/commit/f99ca49)) * **last:** Observable<T>.last() can take type guard as the predicate function ([76a8a57](https://github.com/ReactiveX/RxJS/commit/76a8a57)) * **operators:** Use lift in the operators that don't currently use lift. ([68af9ef](https://github.com/ReactiveX/RxJS/commit/68af9ef)) * **TypeScript:** update TypeScript to v2.0 ([3478b0b](https://github.com/ReactiveX/RxJS/commit/3478b0b)) ### BREAKING CHANGES * **cache:** The .cache() operator has been removed, pending further discussion ([1b23ace](https://github.com/ReactiveX/RxJS/commit/1b23ace)) * ES2015: `rxjs-es` is no longer being published * ES2015: `@reactivex/rxjs` no longer has `/dist/es6` output related #2016 related #1992 * package.json: TypeScript definitions are now for TS 2.0 and higher Even if we use getter for class, they are marked with `readonly` properties in d.ts. * operators: Removes MulticastObservable subclass in favor of a MulticastOperator. <a name="5.0.0-beta.12"></a> # [5.0.0-beta.12](https://github.com/ReactiveX/RxJS/compare/5.0.0-beta.11...v5.0.0-beta.12) (2016-09-09) ### Bug Fixes * **ajaxObservable:** remove implicit dependency to map operator patch ([1744ae9](https://github.com/ReactiveX/RxJS/commit/1744ae9)), closes [#1874](https://github.com/ReactiveX/RxJS/issues/1874) * **AjaxObservable:** return null value from JSON.Parse (#1904) ([6ba374e](https://github.com/ReactiveX/RxJS/commit/6ba374e)) * **catch:** removed unneeded overload for catch ([dd0e586](https://github.com/ReactiveX/RxJS/commit/dd0e586)) * **max:** do not return comparer values ([f454e93](https: