7.0.0-beta.0 (2020-04-03)

Bug Fixes

mergeMapTo: remove redundant/unused generic (#5299) (d67b7da)
ajax: AjaxTimeoutErrorImpl extends AjaxError (#5226) (a8da8dc)
delay: emit complete notification as soon as possible (63b8797), closes #4249
endWith: will properly type N arguments (#5246) (81ee1f7)
fetch: don't leak event listeners added to passed-in signals (#5305) (d4d6c47)
TestScheduler: Subclassing TestScheduler needs RunHelpers (#5138) (927d5d9)
pipe: Special handling for 0-arg case. (#4936) (290fa51)
pluck: fix pluck's catch-all signature for better type safety (#5192) (e0c5b7c)
pluck: param type now accepts number and symbol (9697b69)
startWith: accepts N arguments and returns correct type (#5247) (150ed8b)
combineLatestWith: and zipWith infer types from n-arguments (#5257) (3e282a5)
race: support N args in static race and ensure observable returned (#5286) (6d901cb)
toPromise: correct toPromise return type (#5072) (b1c3573)
fromFetch: don't reassign closed-over parameter in fromFetch (#5234) (37d2d99), closes #5233 #5233

Features

add lastValueFrom and firstValueFrom methods (#5295) (e69b765)
RxJS now supports first-class interop with AsyncIterables (4fa9d01)
combineLatestWith: adds combineLatestWith - renamed legacy combineLatest operator (#5251) (6d7b146)
retry: add config to reset error count on successful emission (#5280) (ab6e9fc)
zipWith: add zipWith which is just a rename of legacy zip operator (#5249) (86b6a27)

BREAKING CHANGES

startWith: startWith will return incorrect types when called with more than 7 arguments and a scheduler. Passing scheduler to startWith is deprecated
toPromise: toPromise return type now returns T | undefined in TypeScript, which is correct, but may break builds.

7.0.0-alpha.1 (2019-12-27)

Bug Fixes

chain subscriptions from observables that belong to other instances of RxJS (e.g. in node_modules) (#5059) (d7f7078)
clear subscription on shareReplay completion (#5044) (35e600f), closes #5034
closure: Annotate next() for ReplaySubject (#5088) (8687fbd)
closure: static prop frameTimeFactor being collapsed when compiled with closure. (39872c9)
docs: remove repetitive op3() in example (#5043) (e17df33)
filter: Fix overload order for filter to support inferring the generic type (#5024) (8255365)
fromFetch: passing already aborted signal to init aborts fetch (0e4849a)

Features

concatWith: adds concatWith (#4988) (dc89736)

7.0.0-alpha.0 (2019-09-18)

Bug Fixes

missing package.json in rxjs/fetch (#5001) (f4bee07)
filter: Resolve TS build failures for certain situations where Boolean is the predicate (77c7dfd)
pluck: key union type strictness (#4585) (bd5ec2d)
race: ignore latter sources after first complete or error (#4809) (f31c3df), closes #4808
scan/reduce: Typings correct for mixed seed/value types (#4858) (b89ebe5)
scheduled: import from relative paths (#4832) (1d37a87)
TS: Error impls now properly type this (#4978) (7606dc7)
TS: fix type inference for defaultIfEmpty. (#4833) (9b5ce2f)
types: add Boolean signature to filter (#4961) (259853e), closes #4959 /github.com/ReactiveX/rxjs/issues/4959#issuecomment-520629091

Features

animationFrames: Adds an observable of animationFrames (#5021) (6a4cd68)
concat: can infer N types (6c0cbc4)
of: Update of typings (e8adbb5)
rxjs-compat: removed for v7 (#4839) (79b1b95)
TestScheduler: expose frameTimeFactor property (#4977) (8c32ed0)
TS: Update to TypeScript 3.5.3 (741a136)

BREAKING CHANGES

concat: Generic signature changed. Recommend not explicitly passing generics, just let inference do its job. If you must, cast with as.
of: Generic signature changed, do not specify generics, allow them to be inferred or use as
of: Use with more than 9 arguments, where the last argument is a SchedulerLike may result in the wrong type which includes the SchedulerLike, even though the run time implementation does not support that. Developers should be using scheduled instead
TS: RxJS requires TS 3.5
rxjs-compat: rxjs/Rx is no longer a valid import site.
rxjs-compat: rxjs-compat is not published for v7 (yet)
race: race() will no longer subscribe to subsequent observables if a provided source synchronously errors or completes. This means side effects that might have occurred during subscription in those rare cases will no longer occur.

6.5.3 (2019-09-03)

Bug Fixes

general: Refactor modules so they don't show side effects in some tools (#4769) (9829c5e0)
defer: restrict allowed factory types (#4835) (40a22096)

6.5.2 (2019-05-10)

Bug Fixes

endWith: wrap args - they are not observables - in of before concatenating (#4735) (986be2f)
forkJoin: test for object literal (#4741) (c11e1b3), closes #4737 #4737
Notification: replace const enum (#4556) (e460eec), closes #4538
of: remove deprecation comment to prevent false positive warning (#4724) (da69c16)
pairwise: make it recursion-proof (#4743) (21ab261)
scan: fixed declarations to properly support different return types (#4598) (126d2b6)
Subscription: Return Empty when teardown === null (#4575) (ffc4e68)
throttleTime: emit single value with trailing enabled (#4564) (fd690a6), closes #2859 #4491
umd: export fetch namespace (#4738) (7926122)
fromFetch: don't abort if fetch resolves (#4742 (ed8d771)

6.5.1 (2019-04-23)

Bug Fixes

Notification: replace const enum (#4556) (e460eec), closes #4538
throttleTime: emit single value with trailing enabled (#4564) (fd690a6), closes #2859 #4491

6.5.0 (2019-04-23)

Bug Fixes

docs-app: remove stopWordFilter from lunr pipeline (#4536) (9eaebd4)
dtslint: disable tests that break in TS@next (#4705) (ecc73d2)
index: export NotificationKind (#4514) (7125355), closes #4513
race: better typings (#4643) (fb9bc48), closes #4390 #4642
throwIfEmpty: ensure result is retry-able (c4f44b9)
types: Fixed signature for onErrorResumeNext (#4603) (4dd0be0)

Features

combineLatest: deprecated rest argument and scheduler signatures (#4641) (6661c79), closes #4640
fromFetch: We now export a fromFetch static observable creation method from rxjs/fetch. Mirrors native fetch only it's lazy and cancellable via Observable interface. (#4702) (5a1ef86)
forkJoin: accepts a dictionary of sources (#4640) (b5a2ac9)
partition: new partition observable creation function. Old partition operator is deprecated (#4419) (#4685) (d5d6980)
scheduled: Add scheduled creation function to use to create scheduled observable of values. Deprecate scheduled versions of from, range, et al. (#4595) (f57e1fc)

Performance Improvements

Subscription: improve parent management (#4526) (06f1a25)

6.4.0 (2019-01-30)

Bug Fixes

ajax: Fix case-insensitive headers in HTTP request (#4453) (673bf47)
bundle: closure to not rewrite polyfills for minification (#4487) (a1fedb9)
bundle: don't export operators twice (#4310) (2399f6e)
combineLatest: improve typings for combineLatest (#4470) (40c3d9f)
compat: remove internal from import locations (#4498) (a6c0017), closes #4070
endWith: ability to endWith different types (#4183) (#4185) (83533d1)
fromEventPattern: improve typings for fromEventPattern (#4496) (037f53d)
Observable: Fix Observable.subscribe to add operator TeardownLogic to returned Subscription. (#4434) (f28955f)
subscribe: Deprecate null starting parameter signatures for subscribe (#4202) (c85ddf6)
combineLatest: support passing union types (ffda319)
from: support passing union types (eb1d596)
withLatestFrom: support passing union types (1e19a24)
zip: support passing union types (0d87f52)
multicast: support returning union types from projection (e9e9041)
exhaustMap: support returning union types from projection (ff1f5dc)
merge: support union type inference for merge operators (c2ac39c)
catchError: support union type returns (8350622)
switchMap: support union type returns (32d35fd)
defer: support union types passed (5aea50e)
race: Update typings to support proper return types (#4465) (0042846)
VirtualTimeScheduler: rework flush so it won't lose actions (#4433) (d068bc9)
WebSocketSubject: fix subject failing to close socket (#4446) (dcfa52b)

Features

shareReplay: Add configuration object for named arguments, and add argument to support unsubscribing from source observable by refCount when all resulting subscriptions have unsubscribed. The default behavior is to leave the source subscription running.
mergeScan: Add index to the accumulator function (#4458) (f5e143d), closes #4441
range: accept one argument (#4360) (a388578)
takeWhile: add an inclusive option to the operator which causes to emit final value (#4115) (6e7f407)

Performance Improvements

internal: optimize Subscription#add() for the common case (#4489) (bdd201c)
internal: use strict equality for isObject() (#4493) (fc84a00)
Subscription: use instanceof to avoid megamorphic LoadIC (#4499) (065b4e3)

6.3.3 (2018-09-25)

Bug Fixes

pipe: align static pipe to Observable pipe rest parameters overl… (#4112) (8c607e9), closes #4109 #4109
RxJS: each instance of RxJS now has a unique Subscriber symbol (0972c56)
subscribe: report errors that occur in subscribe after the initial error (#4089) (9b4b2bc), closes #3803
Subscriber: Can no longer subscribe to itself in a circular manner (#4106) (e623ec6), closes #4095
Subscriber: use only local Subscriber instances (50ee0a7)
TypeScript: ensure RxJS builds with TS@next as well (f03e790)

6.3.2 (2018-09-04)

Bug Fixes

node: will no longer error mixing RxJS 6.3 and 6.2 (#4078) (69d9ccf), closes #4077

6.3.1 (2018-08-31)

Bug Fixes

mergeMap: fix nested mergeMaps (#4072) (0ab701b), closes #4071

6.3.0 (2018-08-30)

Bug Fixes

find: unsubscribe from source when found (#3968) (fd01f7b)
convert @internal comment to JSDoc (#3932) (f8a9d6e)
AjaxObservable: notify with error if fails to parse json response (#3139) (d8231e2), closes #3138
catchError: stop listening to a synchronous inner-obervable when unsubscribed (456ef33)
distinctUntilKeyChanged: improved key typing with keyof T (#3988) (4ec4ff1)
exhaustMap: stop listening to a synchronous inner-obervable when unsubscribed (ee1a339)
find: add undefined to return type (#3970) (5a6c90f), closes #3969
IE10: Remove dependency on Object.setPrototypeOf (#3967) (5c52a73), closes #3966
mergeAll: add source subscription to composite before actually subscribing (#2479) (40852ff), closes #2476
mergeScan: stop listening to a synchronous inner-obervable when unsubscribed (c4002f3)
Observable: forEach will no longer next values after an error (b4bad1f)
Observable: use more granular Observable exports in compat mode (#3974) (3f75564)
onErrorResumeNext: stop listening to a synchronous inner-obervable when unsubscribed (1d14277)
pipe: replace rest parameters overload (#3945) (872b0ec), closes #3841
skipUntil: stop listening to a synchronous notifier after its first nexted value (1c257db)
startWith: allow empty type signature and passing a different type (b7866a0)
subscribable: make subscribe() signature match Observable (#4050) (865d8d7), closes #3891
subscriber: unsubscribe parents on error/complete (ad8131b)
switchMap: stop listening to a synchronous inner-obervable when unsubscribed (260d52a)
takeUntil: takeUntil should subscribe to the source if notifier sync completes without emitting (#4039) (21fd0b4), closes #3504
testscheduler: type arguments to Observable creation functions (#3928) (0e30ef1)

Features

delayWhen: add index to the selector function (#2473) (0979d31)
forEach: deprecating passing promise constructor (5178ab9)
TestScheduler: Add subscription schedule to expectObservable (#3997) (0d20255)

6.2.2 (2018-07-13)

Bug Fixes

first: improved type gaurds for TypeScript (3e12f7a)
last: improved type gaurds for TypeScript (3e12f7a)

6.2.1 (2018-06-12)

Bug Fixes

ci: do not trigger postbuild script on PR (f82c085)
delayWhen: Emit source value if duration selector completes synchronously (#3664) (2c43af7), closes #3663
docs: fix broken github links (#3802) (9f9bf9b)
docs: fix code examples (#3784) (a95441b)
from: Objects implementing Symbol.observable take precedence over other types (80ceea0)
fromEvent: Support React Native and node-compatible event sources. (#3821) (1969f18)
Observable.prototype.pipe: TS typings now more correct for >8 parameters (#3789) (ad010ea)
subscribe: ignore syncError when deprecated (#3749) (f94560c)
Symbol.observable: make observable declaration readonly (#3697) (#3773) (e1c203f)
TypeScript: resolved typings issue for TS 3.0 (bf2cdeb)
typings: allow bufferCreationInterval null for bufferTime (#3734) (0bda9cd), closes #3728

Performance Improvements

remove comments from js-files (#3760) (bb2c334)

6.2.0 (2018-05-22)

Bug Fixes

ajax: Handle timeouts as errors (#3653) (e4128ea)
ajax: RxJS v6 TimeoutError is missing name property (576d943)
isObservable: Fix throwing error when testing isObservable(null) (#3688) (c9acc61)
range: Range should be same for every subscriber (#3707) (9642133)
skipUntil: fix skipUntil when innerSubscription is null (#3686) (4226432)
TestScheduler: restore run changes upon error (27cb9b6)
TimeoutError: Add name to TimeoutError (44042d0)
WebSocketSubject: Check to see if WebSocket exists in global scope (#3694) (2db0788)

Features

endWith: add new operator endWith (#3679) (537fe7d)

6.1.0 (2018-05-03)

Bug Fixes

audit: will not crash if duration is synchronous (#3608) (76b7e27), closes #2743
delay: fix memory leak (#3605) (96f05b0)

Features

isObservable: a new method for checking to see if an object is an RxJS Observable (edb33e5)

6.0.0 (2018-04-24)

Bug Fixes

websocket: no longer throws errors in operators applied to it (#3577) (cb38ddf)

Code Refactoring

webSocket: rename back to webSocket ala 5.0 (#3590) (d5658fe)

Features

testing: Add testScheduler.run() helper (2d5b3b2)
testing: testScheduler.run() supports time progression syntax (9322b7d)

BREAKING CHANGES

webSocket: UNBREAKING websocket to be named webSocket again, just like it was in 5.0. Now you should import from rxjs/webSocket

6.0.0-uncanny-rc.7 (2018-04-13)

Bug Fixes

interop: functions with [Symbol.observable] on them will now be accepted in operators like mergeMap, from, etc (#3562) (c9570df)
migrations: change the version the migration applies to (#3564) (9217a03)
rxjs: no longer requires dom lib (#3566) (8b33ee2)
throttleTime: emit throttled values when complete if trailing=true (#3559) (3e846f2), closes #3351
websocket: export WebSocketSubject, WebSocketSubjectConfig from rxjs/websocket (#3557) (c365405)

6.0.0-ucandoit-rc.6 (2018-04-13)

Bug Fixes

migrations: make sure collection.json is present (63e10a8)

6.0.0-uber-rc.5 (2018-04-13)

Bug Fixes

migrations: deploy compiled JS rather than just the TS files. (9aed72f)

6.0.0-turbo-rc.4 (2018-04-12)

Bug Fixes

groupBy: reexporting the GroupedObservable type (#3556) (12d4933), closes #3551
migrations: build now properly copies migration into package (#3555) (329a145)

6.0.0-terrific-rc.3 (2018-04-11)

Features

schematics: add migration schematics for schematics users (20a2f07)

6.0.0-tenacious-rc.2 (2018-04-11)

Bug Fixes

compat: fix first & last operators so undefined arguments won't create empty values (#3542) (a327db2)
node/TS: eliminate incompatable types to protected properties (#3544) (21dd3bd)

BREAKING CHANGES

NodeJS Dropping support for non-LTS versions of Node.

6.0.0-tactical-rc.1 (2018-04-07)

Why "tactical"? Because I TOTALLY MEANT to ruin the release names by publishing an amazingly funny April Fool's joke about smooshMap. So this was "tactical". Super tactical. So very tactical.

Bug Fixes

closure-compiler: adds nocollapse to static members (#3519) (8758a5d)
closure-compiler: remove internal flag from _isScalar (#3520) (b3a657d)
closure-compiler: remove top level throws (#3518) (b069473)
closure-compiler: removes bad [@params](https://github.com/params) comments that caused issues (#3521) (09c874c)
compat: deprecate Observable.if/throw (#3527) (3116275)
compat: export TeardownLogic (#3532) (0c76e64), closes #3531
compat: remove observable/scalar deep import as it wasn't previously available (4566001)
Scheduler: export but deprecate (#3522) (a3e1fb8)
skipUntil: properly manages notifier subscription (889f84a), closes #1886
fix type mismatch in NodeStyleEventEmitter (#3530) (3f51ddd)
sourcemaps: fix mappings for source maps so they will work (#3523) (32e7f75), closes #3479

Features

compat: add Observable extension classes with static create() (ecd7f68)
compat: add rxjs/interfaces exports (ba5c266)

6.0.0-rc.0 (2018-03-31)

Bug Fixes

ajax: properly encode body with form data that includes URLs (#3502) (4455d21), closes #2399
bindNodeCallback: better type inference (932bb7a)
elementAt: now allows falsy defaultValues (13706e7)
lint_perf: fix lint issues with newer perf tests (1013754)
throttle: now properly trailing throttles for individual values (#3505) (3db18d1), closes #2864

Features

takeUntil: no longer subscribes to source if notifier synchronously emits (#3504) (7b8a3e3), closes #2189

Performance Improvements

pluck,bufferTime,asObservable: add performance tests for pluck(), bufferTime() and asObservable() operators (#2491) (24506b3)
ReplaySubject: slightly improved performance (#2677) (9fea36d)

BREAKING CHANGES

throttle: This changes the behavior of throttle, in particular throttling with both leading and trailing behaviors set to true, to more closely match the throttling behavior of lodash and other libraries. Throttling now starts immediately after any emission from the observable, and values will not be double emitted for both leading and trailing values

6.0.0-beta.4 (2018-03-29)

Bug Fixes

bindCallback: add better type overloads (#3480) (037cf34)
compat: add IScheduler to compat/Scheduler (0a67df6)

Features

compat: add all utilities to internal-compatibility (a9ecfe7)
websocket: Add serializer/deserializer config settings (#3489) (8d44124)

BREAKING CHANGES

websocket: WebSocketSubject will now JSON serialize all messages sent over it by default, to return to the old behavior, pass a config setting of serializer: x => x like so: websocket({ url, serializer: x => x })

6.0.0-beta.3 (2018-03-27)

Bug Fixes

build: update build-optimizer and point to correct sources (6717a01)
node: Subscriber no longer trampled if from another copy of rxjs (371b658)
Observable: empty ctor returns valid Observable (#3464) (58b8ebc)
subscribeOn: add subscribeOn back to the distribution (d6556f2)

6.0.0-beta.2 (2018-03-24)

Bug Fixes

build: update build-optimizer and point to correct sources (6717a01)
Observable: empty ctor returns valid Observable (#3464) (58b8ebc)
subscribeOn: add subscribeOn back to the distribution (d6556f2)

6.0.0-beta.1 (2018-03-21)

Bug Fixes

remove duplicate Subscribable interface declaration (#3450) (ac78d89)
compat: add package.json for internal-compatibility package (#3455) (3b306ed)
config.useDeprecatedSynchronousErrorThrowing: reentrant error throwing no longer trapped (#3449) (0892a2d), closes #3161

Features

compat: add interfaces export (d8f8122)
compat: add rxjs/observable/dom/* APIs to compatibility package (d9a618f)

6.0.0-beta.0 (2018-03-16)

Bug Fixes

AjaxObservable: 1xx,2xx,3xx requests shouldn't error, only 4xx,5xx (#3438) (2128932)
compat: adjustments to get rxjs-compat to build correctly (dea6964)
config: expose configuration via rxjs exports (#3441) (4287424)
config: make sure that Promise config is undefined initially (#3440) (469afe8)
ESM: Add [operators|ajax|websocket|testing]/package.json for ESM support, fixes #3227 (#3356) (725dcb4)
forkJoin: fix forkJoin typings for forkJoin(Observable[]) (#3436) (17c7f8f)
fromEvent: Defines toString to fix Closure compilations (#3417) (1558b43)
fromEvent: pass options in unsubscribe (f1872b0), closes #3349
publishReplay: type inference improved (#3437) (dd7c9f1), closes #3260
rxjs: add exports for symbols/interfaces that were missing (#3380) (1622ee0)
rxjs: make sure esm imports from index.js by default, not Rx.js (#3316) (c2b00f4), closes #3315
rxjs: once again exports custom error types (#3371) (4465a9f)
rxjs: remove types.ts importing from itself. (#3383) (8fd50ad)
spec: get tests running using compatibility package (916e968)
correct internal module paths to be systemjs compatible (#3412) (35abc9d)
Symbol.iterator: correctly handle case where Symbol constructor itself is not defined (#3394) (6725be1)
typings: fixed some cases where multicast and publish would not return a ConnectableObservable (#3320) (ddffecc)
reexport Symbol.observable typings patch (4c4d7b0)
remove the root operators.ts because it overshadows operators/package.json (184b6d4)

Code Refactoring

Observable.if: remove ts hacks from Observable (f46f261)
Rx.ts: move Rx.ts to internal (#3400) (7ad2119)

Features

ajax: default to opting into CORS (#3442) (aa3bf57), closes #3273
bindCallback: remove result selector (2535641)
bindNodeCallback: remove resultSelector (26e6e5c)
compat: add compatability package definition (40aca82)
compat: add concat operator to compatibility layer (6e84e78)
compat: add legacy reexport compat layer for 'rxjs/Observable' and other top-level symbols (70e562b)
compat: add Rx.ts to rxjs-compat (df25de1)
compat: combatability mode for combineLatest (fd86df5)
compat: compatibility mode for merge operator (ffce980)
compat: compatibility mode for zip operator (9f131d0)
compat: make Rx.ts for compatability layer work as the default for rxjs-compat (d43a4c2)
compat: set up correct imports & get build working for rxjs-comapt (1a0dc97)
deprecated-error-handling-warning: add console warning when code sets the flag to bad mode (49be56a)
error-handling: add deprecated sync error handling behind a flag (583cd1d)
exhaustMap: simplify interface (42589d0)
first: simplify interface (a011338)
forkJoin: simplify interface (4d2338b)
fromEvent: remove resultSelector (197f449)
fromEvent: will now emit an array when event emits multiple arguments (51b37fd)
fromEventPattern: removed resultSelector (6b34f9f)
last: simplify interface (3240419)
mergeMap|concatMap|concatMapTo: simplified the signatures (d293245)
mergeMapTo: simplify interface (582c7be)
never: no longer export never function (#3386) (53debc8)
switchMap|switchMapTo: simplify interface (959fb6a)
Symbol.iterator: no longer polyfilled (#3389) (6319f3c)
Symbol.observable: is no longer polyfilled (#3387) (4a5aaaf)
throwIfEmpty: adds throwIfEmpty operator (#3368) (9b21458)
typings: updated typings for combineAll, mergeAll, concatAll, switch, exhaust, zipAll (#3321) (f7e4c02)
umd: UMD now mirrors export schema for ESM and CJS (#3426) (556c904)

BREAKING CHANGES

ajax: will no longer execute a CORS request by default, you must opt-in with the crossDomain flag in the config.
mergeMap|concatMap|concatMapTo: mergeMap, concatMap and concatMapTo no longer support a result selector, if you need to use a result selector, use the following pattern: source.mergeMap(x => of(x + x).pipe(map(y => y + x)) (the pattern would be the same for concatMap).
never: no longer exported. Use the NEVER constant instead.
bindCallback: removes result selector, use map instead: bindCallback(fn1, fn2)() becomes bindCallback(fn1)().pipe(map(fn2))
Rx.ts: importing from rxjs/Rx is no longer available. Upcoming backwards compat solution will allow that
Symbol.iterator: We are no longer polyfilling Symbol.iterator. That would be done by a proper polyfilling library
Observable.if: TypeScript users using Observable.if will have to cast Observable as any to get to if. It is a better idae to just use iif directly via import { iif } from 'rxjs';
bindNodeCallback: resultSelector removed, use map instead: bindNodeCallback(fn1, fn2)() becomes bindNodeCallback(fn1)().pipe(map(fn2))
Symbol.observable: RxJS will no longer be polyfilling Symbol.observable. That should be done by an actual polyfill library. This is to prevent duplication of code, and also to prevent having modules with side-effects in rxjs.
fromEvent: result selector removed, use map instead: fromEvent(target, 'click', fn) becomes fromEvent(target, 'click').pipe(map(fn))
last: no longer accepts resultSelector argument. To get this same functionality, use map.
first: no longer supports resultSelector argument. The same functionality can be achieved by simply mapping either before or after first depending on your use case.
exhaustMap: resultSelector no longer supported, to get this functionality use: source.pipe(exhaustMap(x => of(x + x).pipe(map(y => x + y))))
switchMap|switchMapTo: switchMap and switchMapTo no longer take resultSelector arguments, to get the same functionality use switchMap and map in combination: source.pipe(switchMap(x => of(x + x).pipe(y => x + y))).
mergeMapTo: mergeMapTo no longer accepts a resultSelector, to get this functionality, you'll want to use mergeMap and map together: source.pipe(mergeMap(() => inner).pipe(map(y => x + y)))
fromEventPattern: no longer supports a result selector, use map instead: fromEventPattern(fn1, fn2, fn3) becomes fromEventPattern(fn1, fn2).pipe(map(fn3))

6.0.0-alpha.4 (2018-03-13)

Bug Fixes

ESM: Add [operators|ajax|websocket|testing]/package.json for ESM support, fixes #3227 (#3356) (725dcb4)
fromEvent: Defines toString to fix Closure compilations (#3417) (1558b43)
fromEvent: pass options in unsubscribe (f1872b0), closes #3349
rxjs: add exports for symbols/interfaces that were missing (#3380) (1622ee0)
rxjs: make sure esm imports from index.js by default, not Rx.js (#3316) (c2b00f4), closes #3315
rxjs: once again exports custom error types (#3371) (4465a9f)
rxjs: remove types.ts importing from itself. (#3383) (8fd50ad)
correct internal module paths to be systemjs compatible (#3412) (35abc9d)
Symbol.iterator: correctly handle case where Symbol constructor itself is not defined (#3394) (6725be1)
typings: fixed some cases where multicast and publish would not return a ConnectableObservable (#3320) (ddffecc)
reexport Symbol.observable typings patch (4c4d7b0)
remove the root operators.ts because it overshadows operators/package.json (184b6d4)

Code Refactoring

Observable.if: remove ts hacks from Observable (f46f261)
Rx.ts: move Rx.ts to internal (#3400) (7ad2119)

Features

bindCallback: remove result selector (2535641)
bindNodeCallback: remove resultSelector (26e6e5c)
exhaustMap: simplify interface (42589d0)
first: simplify interface (a011338)
forkJoin: simplify interface (4d2338b)
fromEvent: remove resultSelector (197f449)
fromEvent: will now emit an array when event emits multiple arguments (51b37fd)
fromEventPattern: removed resultSelector (6b34f9f)
last: simplify interface (3240419)
mergeMap|concatMap|concatMapTo: simplified the signatures (d293245)
mergeMapTo: simplify interface (582c7be)
never: no longer export never function (#3386) (53debc8)
switchMap|switchMapTo: simplify interface (959fb6a)
Symbol.iterator: no longer polyfilled (#3389) (6319f3c)
Symbol.observable: is no longer polyfilled (#3387) (4a5aaaf)
throwIfEmpty: adds throwIfEmpty operator (#3368) (9b21458)
typings: updated typings for combineAll, mergeAll, concatAll, switch, exhaust, zipAll (#3321) (f7e4c02)
umd: UMD now mirrors export schema for ESM and CJS (#3426) (556c904)

BREAKING CHANGES

Symbol.observable: RxJS will no longer be polyfilling Symbol.observable. That should be done by an actual polyfill library. This is to prevent duplication of code, and also to prevent having modules with side-effects in rxjs.
mergeMap|concatMap|concatMapTo: mergeMap, concatMap and concatMapTo no longer support a result selector, if you need to use a result selector, use the following pattern: source.mergeMap(x => of(x + x).pipe(map(y => y + x)) (the pattern would be the same for concatMap).
bindCallback: removes result selector, use map instead: bindCallback(fn1, fn2)() becomes bindCallback(fn1)().pipe(map(fn2))
Rx.ts: importing from rxjs/Rx is no longer available. Upcoming backwards compat solution will allow that
Symbol.iterator: We are no longer polyfilling Symbol.iterator. That would be done by a proper polyfilling library
Observable.if: TypeScript users using Observable.if will have to cast Observable as any to get to if. It is a better idae to just use iif directly via import { iif } from 'rxjs';
bindNodeCallback: resultSelector removed, use map instead: bindNodeCallback(fn1, fn2)() becomes bindNodeCallback(fn1)().pipe(map(fn2))
never: no longer exported. Use the NEVER constant instead.
fromEvent: result selector removed, use map instead: fromEvent(target, 'click', fn) becomes fromEvent(target, 'click').pipe(map(fn))
last: no longer accepts resultSelector argument. To get this same functionality, use map.
first: no longer supports resultSelector argument. The same functionality can be achieved by simply mapping either before or after first depending on your use case.
exhaustMap: resultSelector no longer supported, to get this functionality use: source.pipe(exhaustMap(x => of(x + x).pipe(map(y => x + y))))
switchMap|switchMapTo: switchMap and switchMapTo no longer take resultSelector arguments, to get the same functionality use switchMap and map in combination: source.pipe(switchMap(x => of(x + x).pipe(y => x + y))).
mergeMapTo: mergeMapTo no longer accepts a resultSelector, to get this functionality, you'll want to use mergeMap and map together: source.pipe(mergeMap(() => inner).pipe(map(y => x + y)))
fromEventPattern: no longer supports a result selector, use map instead: fromEventPattern(fn1, fn2, fn3) becomes fromEventPattern(fn1, fn2).pipe(map(fn3))

6.0.0-alpha.3 (2018-02-06)

Bug Fixes

animationFrame.spec: spec description fix (#3140) (ab6c325)
debounce: support scalar selectors (#3236) (1548393), closes #3232
forkJoin: catch and forward selector errors (#3261) (e57bbb7), closes #3216
Observable: expose pipe rest parameter overload (#3292) (7ff5bc3)
onErrorResumeNext: no longer holds onto subscriptions too long (abbbdad), closes #3178
scheduler: prevent unwanted clearInterval (#3226) (d7cfb42), closes #3042
timer: multiple subscriptions to timer(Date) behaves correctly (aafa7ff), closes #3252
typings: correct compilation warnings from missing types in tests (3aad6bc)
typings: relax debounce selector type (c419ab4), closes #3164
typings: relax throttle selector type (#3205) (e83fda7), closes #3204
typings: the return type of factory of defer should be ObservableInput (#3211) (dc41a5e)

Features

empty: empty() returns the same instance (5c7c749)
EMPTY: observable constant EMPTY now exported (08fb074)
never: always return the same instance (#3249) (d57fa52)
rxjs: move rxjs/create into rxjs (#3299) (6711fe2)
throwError: functional version of throwError (639236e)

BREAKING CHANGES

rxjs: rxjs/create items are now exported from rxjs
throwError: Observable.throw no longer available in TypeScript without a cast
empty: empty() without a scheduler will return the same instance every time.
empty: In TypeScript, empty() no longer accepts a generic argument, as it returns Observable<never>
never: never() always returns the same instance
never: TypeScript typing for never() is now Observable<never> and the function no longer requires a generic type.

6.0.0-alpha.2 (2018-01-14)

Bug Fixes

build: properly outputs subdirectories like rxjs/operators (34fe560)

6.0.0-alpha.1 (2018-01-12)

Bug Fixes

Revert "fix(scheduler): prevent unwanted clearInterval (#3044)" (ad5c7c6)
Revert "fix(scheduler): prevent unwanted clearInterval (#3044)" (64f9285)
debounceTime: synchronous reentrancy of debounceTime no longer swallows the second value (#3218) (598e9ce), closes #2748
dependency: move symbol-observable into devdependency (4400628)
IteratorObservable: get new iterator for each subscription (#2497) (1bd0a58), closes #2496
Observable.toArray: Fix toArray with multiple subscriptions. (#3134) (3390926)
SystemJS: avoid node module resolution of pipeable operators (#3025) (0f3cf71), closes #2971 #2996 #3011
tap: make next optional (#3073) (e659f0c), closes #2534
TSC: Fixing TSC errors. Fixes #3020 (01d1575)
typings: the return type of project of mergeScan should be ObservableInput (23fe17d)

Chores

TypeScript: Bump up typescript to latest (#3009) (2f395da)

Code Refactoring

asap: Remove setImmediate polyfill (5eb6af7)
distinct: Remove Set polyfill (68ee499)
groupBy: Remove Map polyfill (74b5b1a)

Features

Observable: unhandled errors are now reported to HostReportErrors (#3062) (cd9626a)
reorganize: move ./interfaces.ts to internal/types.ts (cfbfaac)
reorganize: internal utils hidden (70058cd)
reorganize: add rxjs/create exports (c9963bd)
reorganize: ajax observable creator now exported from rxjs/ajax (e971c93)
reorganize: all patch operators moved to internal directory (7342401)
reorganize: export noop and identity from rxjs (810c4d0)
reorganize: export Notification from rxjs (8809b48)
reorganize: export schedulers from rxjs (abd3b61)
reorganize: export Subject, ReplaySubject, BehaviorSubject from rxjs (bd683ca)
reorganize: export the pipe utility function from rxjs (4574310)
reorganize: hid testing implementation details (b981666)
reorganize: move observable implementations under internal directory (2d5c3f8)
reorganize: move operator impls under internal directory (207976f)
reorganize: move top-level impls under internal directory (c3bb705)
reorganize: moved symbols to be internal (80783ab)
reorganize: operators all exported from rxjs/operators (b1f8bfe)
reorganize: websocket subject creator now exported from rxjs/websocket (5ac62c0)

BREAKING CHANGES

webSocket: webSocket creator function now exported from rxjs/websocket as websocket.
IteratorObservable: IteratorObservable no longer share iterator between subscription
utils: Many internal use utilities like isArray are now hidden under rxjs/internal, they are implementation details and should not be used.
testing observables: HotObservable and ColdObservable, and other testing support types are no longer exported directly.
creation functions: All create functions such as of, from, combineLatest and fromEvent should now be imported from rxjs/create.
types and interfaces: Can no longer explicitly import types from rxjs/interfaces, import them from rxjs instead
symbols: Symbols are no longer exported directly from modules such as rxjs/symbol/observable please use Symbol.observable and Symbol.iterator (polyfills may be required)
deep imports: Can no longer deep import top-level types such as rxjs/Observable, rxjs/Subject, rxjs/ReplaySubject, et al. All imports should be done directly from rxjs, for example: import \{ Observable, Subject \} from 'rxjs';
schedulers: Scheduler instances have changed names to be suffixed with Scheduler, (e.g. asap -> asapScheduler)
operators: Pipeable operators must now be imported from rxjs like so: import { map, filter, switchMap } from 'rxjs/operators';. No deep imports.
ajax: Ajax observable should be imported from rxjs/ajax.
Observable: You should no longer deep import custom Observable implementations such as ArrayObservable or ForkJoinObservable.
_throw: _throw is now exported as throwError
if: if is now exported as iif
operators: Deep imports to rxjs/operator/* will no longer work. Again, pipe operators are still where they were.
error handling: Unhandled errors are no longer caught and rethrown, rather they are caught and scheduled to be thrown, which causes them to be reported to window.onerror or process.on('error'), depending on the environment. Consequently, teardown after a synchronous, unhandled, error will no longer occur, as the teardown would not exist, and producer interference cannot occur
distinct: Using distinct requires a Set implementation and must be polyfilled in older runtimes
asap: Old runtimes must polyfill Promise in order to use ASAP scheduling.
groupBy: Older runtimes will require Map to be polyfilled to use groupBy
TypeScript: IE10 and lower will need to polyfill Object.setPrototypeOf
operators removed: Operator versions of static observable creators such as merge, concat, zip, onErrorResumeNext, and race have been removed. Please use the static versions of those operations. e.g. a.pipe(concat(b, c)) becomes concat(a, b, c).

5.5.6 (2017-12-21)

Bug Fixes

Observable: rethrow errors when syncErrorThrowable and inherit it from destination. Fixes #2813 (541b49d)

5.5.5 (2017-12-06)

Support Added

Bazel: Add files to support users that want Bazel builds with RxJS (12dac3b)

5.5.4 (2017-12-05)

Bug Fixes

scheduler: resolve regression on angular router with zones (#3158) (520b06a)
publish: re-publish after having built with proper version of TypeScript. (f0ff5bc, closes#3155)

5.5.3 (2017-12-01)

Bug Fixes

concatStatic: missing exports for mergeStatic and concatStatic (#2999) (cae5f9b)
scheduler: prevent unwanted clearInterval (#3044) (7d722d4), closes #3042
SystemJS: avoid node module resolution of pipeable operators (#3025) (d77e3d7), closes #2971 #2996 #3011
typings: fix subscribe overloads (#3053) (1a9fd42), closes #3052

5.5.2 (2017-10-25)

Bug Fixes

package: fixed import failures in Webpack (#2987) (e16202d)
typings: improved type inference for arguments to publishReplay (#2992) (0753ff7), closes #2991
typings: ensure TS types for zip and combineLatest are properly inferred. (b8e6cf8)
typings: publish variants will properly return ConnectableObservable(#2983) (d563bfa)

5.5.1 (2017-10-24)

Bug Fixes

build: Remove module and es2015 keys to avoid resolution conflicts (5073139)
ajaxobservable: fix operator import path (d9b62ed)

5.5.0 (2017-10-18)

Bug Fixes

build: CJS sourceMaps now inlined into sourcesContent (39b4af5), closes #2934

Features

publishReplay: add selector function to publishReplay (#2885) (e0efd13)

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), closes #2934
flatMap: reexport flatMap as alias of mergeMap (#2920) (9922c02)
publish: correct the name and republish to sync packages (464b115)
shareReplay: no longer exporting function unnecessarily (#2928) (e159578)
shareReplay: properly uses lift (#2924) (3d9cf87), closes #2921
toPromise: include toPromise in build output (#2923) (f55bfa5), closes #2922

5.5.0-beta.5 (2017-10-06)

Bug Fixes

toPromise: remove lettable version of toPromise (031edca), closes #2868

Features

toPromise: now exists as a permanent method on Observable (2e49a5c)

5.5.0-beta.4 (2017-10-06)

Bug Fixes

publish: fix selector typings (#2891) (9ee234d), closes #2889
shareReplay: properly retains history on subscribe (#2910) (accbcd0), closes #2908
subscribeOn: remove subscribeOn from reexport to support treesha… (#2899) (fb51a02)

5.5.0-beta.3 (2017-10-03)

Bug Fixes

build: revert to 5.4.x build output for CJS & add configurable support for ESM (#2878) (167456a)
concatAll: use higher-order lettable version of concatAll (60c96ab)
mergeAll: use higher-order lettable version of mergeAll (f0b703b)

5.5.0-beta.2 (2017-09-27)

Bug Fixes

build: make CJS references to import X from '../operators' work correctly with SystemJS (#2874) (3dd4cc4)

5.5.0-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) (daaf424)
package: remove src directory and fix typings location (#2866) (c57eea7)

Features

global: export lettables as Rx.operators (#2862) (ba2f586), closes #2861

5.5.0-beta.0 (2017-09-22)

Important! Checkout the explanation of the new lettable operators features here

Bug Fixes

package: correct errors generated during rollup for UMD generation (#2839) (124cc93)
partition: update TypeScript signature to match docs and filter operator (#2819) (755df9b)
subscribeToResult: throw error in subscriber with inner observable (d7bffa9), closes #2618

Features

ajax: Include the response on instances of AjaxError (3f6553c)
audit: add higher-order lettable version of audit (e2daefe)
auditTime: add higher-order lettable version of auditTime (9e963aa)
buffer: add higher-order lettable version of buffer (d8ca9de)
bufferCount: add higher-order lettable version of bufferCount (0ae2ed5)
bufferTime: add higher-order lettable version of bufferTime operator (0377ca6)
bufferToggle: add higher-order lettable version of bufferToggle (ea1c3ee)
bufferWhen: add higher-order lettable version of bufferWhen (ec3eceb)
catchError: add higher-order lettable version of catch (408a2af)
combineAll: add higher-order lettable version of combineAll (97704b3)
combineLatest: add higher-order lettable version of combineLatest (b7154f2)
concatMap: add higher-order lettable version of concatMap (c4125ff)
concatMapTo: add higher-order lettable version of concatMapTo (0a6672e)
count: add higher-order lettable version of count (caf713e)
debounce: add higher-order lettable version of debounce (cb8ce46)
debounceTime: add higher-order lettable version of debounceTime (df0d439)
delay: add higher-order lettable version of delay (7efb803)
delayWhen: add higher-order lettable version of delayWhen (cb91c3f)
dematerialize: add higher-ordeer lettable version of dematerialize (b5948f9)
distinct: add higher-order lettable version of distinct (0429a69)
distinctUntilChanged: add higher-order lettable version of distinctUntilChanged (b2725e7)
distinctUntilKeyChanged: add higher-order lettable version of distinctUntilKeyChanged (9db141c)
elementAt: add higher-order lettable version of elementAt (b8e956b)
every: add higher-order lettable version of every (13f3503)
exhaust: add higher-order lettable version of exhaust (b145dca)
exhaustMap: add higher-order lettable exhaustMap (b134e0c)
expand: add higher-order lettable expand (6ec8a19)
filter: add higher-order lettable version of filter (2848556)
finalize: add higher-order lettable version of finally, called finalize (cfeae9f)
find: add higher-order lettable version of find (ff6d5af)
findIndex: add higher-order lettable findIndex (40e680e)
first: add higher-order lettable first (33eac1e)
groupBy: add higher-order lettable groupBy (5281229)
ignoreElements: add higher-order lettable version of ignoreElements (68286d4)
isEmpty: add higher-order lettable version of isEmpty (aad1833)
last: add higher-order lettable version of last (bf33b97)
lettables: add higher-order lettable versions of concat, concatAll, mergeAll (d7e8be7)
map: add higher-order lettable map operator (ce40b2d)
mapTo: add higher-order lettable version of mapTo (e97530f)
materialize: add higher-order lettable materialize operator (ce42477)
merge: add higher-order lettable version of merge (#2809) (3136403)
mergeMap: add higher-order lettable version of mergeMap (417efde)
mergeMapTo: add higher-order lettable version of mergeMapTo (653b47a)
mergeScan: add higher-order lettable version of mergeScan (fde7205)
multicast: add higher-order lettable variant of multicast (fb6014d)
observeOn: add higher-order lettable version of observeOn (feb0f5a)
onErrorResumeNext: add higher-order lettable version of onErrorResumeNext (badec6a)
operators: higher-order lettables of reduce, min, max and defaultIfEmpty added (9974fc2)
package: rxjs distribution now supports main, module and es2015 keys in package.json (988e1af)
pairwise: add higher-order lettable version of pairwise (bb21a44)
partition: add higher-order lettable version of partition (595e588)
pipe: add pipe method ot Observable (9f6312d)
pipe: add pipe utility function(42f9daf)
pluck: add higher-order lettable version of pluck (8ab0914)
publish: add higher-order lettable variant of publish (4ccf794)
publishBehavior: add higher-order lettable version of publishBehavior (e911aef)
publishLast: add higher-order lettable version of publishLast (684728c)
publishReplay: add higher-order lettable version of publishReplay (2958917)
race: add higher-order lettable version of race (e646851)
refCount: add higher-order lettable version of refCount (21fba63)
repeat: add higher-order lettable version of repeat (8473fe5)
repeatWhen: add higher-order lettable version of repeatWhen (1d1cecd)
retry: add higher-order lettable version of retry (28e9b13)
retryWhen: add higher-order lettable version of retryWhen (1290e3c)
sample: add higher-order lettable version of sample (8c73e6e)
sampleTime: add higher-order lettable version of sampleTime (ba6a9ce)
scan: add higher-order lettable version of scan (2cc5d75)
sequenceEqual: add higher-order lettable version of sequenceEqual (7cd3165)
share: add higher-order lettable version of share (f10c42e)
shareReplay: add higher-order lettable version of shareReplay (e8be197)
single: add higher-order lettable version of single (3bc050a)
skip: add higher-order lettable version of skip (baed383)
skipLast: add higher-order lettable version of skipLast (6e1ff3c)
skipUntil: add higher-order lettable version of skipUntil (6cc2cd6)
skipWhile: add higher-order lettable version of skipWhile (76d8ffa)
subscribeOn: add higher-order lettable version of subscribeOn (866af37)
switchAll: add higher-order lettable version of switch (2f12572)
switchMap: add higher-order lettable version of switchMap (b6e5b56)
switchMapTo: add higher-order lettable version of switchMapTo (2640184)
take: add higher-order lettable version of take (089a5a6)
takeLast: add higher-order lettable version of takeLast (cd7e7dd)
takeUntil: add higher-order lettable version of takeUntil (bb2ddaa)
takeWhile: add higher-order lettable version of takeWhile (f86c862)
tap: add higher-order lettable version of do (f85c60e)
throttle: add higher-order lettable version of throttle (e4dd1fd)
throttleTime: add higher-order lettable version of throttleTime (34a592d)
timeInterval: add higher-order lettable version of timeInterval (fcad034)
timeout: add higher-order lettable version of timeout (2546750)
timeoutWith: add higher-order lettable version of timeoutWith (bd7f5ed)
timestamp: add higher-order lettable version of timestamp (a780bf2)
toArray: add higher-order lettable version of toArray (82480cf)
toArray: add higher-order lettable version of toArray (a03a50c)
toPromise: add higher-order lettable version of toPromise (1627da2)
window: add higher-order lettable version of window (9f6373e)
windowCount: add higher-order lettable version of windowCount (2a9e54c)
windowTime: add higher-order lettable version of windowTime (29ffa1b)
windowToggle: add higher-order lettable version of windowToggle (81ec389)
windowWhen: add higher-order lettable version of windowWhen (0b73208)
withLatestFrom: add higher-order lettable version of withLatestFrom (509c97c)
zip: add higher-order lettable version of zip (8a9b9b2)
zipAll: add higher-order lettable version of zipAll (f6bd51f)

5.4.3 (2017-08-10)

Bug Fixes

compilation: compiles under typescript 2.4.2 (#2780) (d2a32f9)
exports: add exports for missing static operators: generate, (08c4196)

5.4.2 (2017-07-05)

Bug Fixes

Notification: Don't reference this from static methods. (9f8e375)
Subject: lift signature is now appropriate for stricter TypeScript 2.4 checks (#2722) (9804de7)

5.4.1 (2017-06-14)

Bug Fixes

ajax: Only set timeout & responseType if request is asynchronous (#2486) (380fbcf)
audit: will now properly mirror source if durations are Observable.empty() (#2595) (6ded82e)
elementAt: will now properly unsubscribe when it completes or errors (#2501) (a400cab)
ErrorObservable: will now propagate errors properly when used in a catch after fromPromise. (#2552) (cf88a20)
groupBy: group duration notifiers will now properly unsubscribe and clean up (#2662) (ab92083), closes #2660 #2661
Observable: errors thrown in observer/handlers without an operator applied will no longer be swallowed (#2626) (c250afc), closes #2565
reduce: type definitions overloads for TypeScript are now in proper order (#2523) (ccc0647)
Schedulers: Fix issue where canceling an asap or animationFrame action early could throw (#2638) (fc39043)

5.4.0 (2017-05-09)

Features

shareReplay: adds shareReplay variant of publishReplay (#2443) (5a2266a)
skipLast: add skipLast operator (#2316) (4ffbbe5), closes #1404
TypeScript: fromPromise accepts PromiseLike object (#2505) (ade1fd5)

5.3.3 (2017-05-09)

Bug Fixes

delayWhen: correctly handle synchronous duration observable (#2589) (695f280), closes #2587
race: allow TypeScript support for array of observables other than rest param (#2548) (ace553c)
Subscriber: do not call complete with undefined value param (#2559) (3d63de2)

(NOTE: 5.3.2 was a broken release and was removed)

5.3.1 (2017-05-02)

Bug Fixes

AsyncAction: rescheduling an action with the same delay before it has executed will now schedule appropriately. (#2580) (281760e)
closure: make root.ts work with closure (#2546) (0ecf55d)
tests: add missing babel-polyfill to package.json (b277ce9), closes #2261
withLatestFrom: change from hot to cold observable in marble test (0c65446), closes #2526

5.3.0 (2017-04-03)

Bug Fixes

catch: return type is now the union of input types (#2478) (840def0)
forEach: fix a temporal dead zone issue in forEach. (#2474) (e9e9801)
multicast: Ensure ConnectableObservables returned by multicast are state-isolated. (aaa9e6b)
reduce: proper TypeScript signature overload ordering (#2382) (f6a4951), closes #2338
SafeSubscriber: SafeSubscriber shouldn't mutate incoming Observers. (a1778e0)
timeout: Cancels scheduled timeout, if no longer needed (3e9d529), closes #2134 #2244 #2355 #2347 #2353 #2254 #2372 #1301
zipAll: complete when the source is empty (712fece)

Features

delayWhen: add index to the selector function (5d6291e)
symbol exports: symbols now also exported without $$ prefix to work with Babel UMD exporting (#2435) (747bef6), closes #2415

Performance Improvements

bufferCount: optimize bufferCount operator (#2359) (28d0883)

April Fools

smooth: smooth() was never really a thing. Sorry, folks. :D

5.2.0 (2017-02-21)

Bug Fixes

ajax: will set withCredentials after open on XHR for IE10 (#2332) (0ab1d3b)
bindCallback: emit undefined when callback is without arguments (915a2a8)
bindNodeCallback: emit undefined when callback has no success arguments (8b81fc6), closes #2254
bindNodeCallback: errors thrown in callback will be scheduled if a scheduler is provided (#2344) (82ec4f1)
concat: will now return Observable when given a single object implementing Symbol.observable (#2387) (f5d035a)
ErrorObservable: remove type constraint to error value (2f951cd), closes #2395
forkJoin: add type signature for single observable with selector (7983b91), closes #2347
merge: return Observable when called with single lowerCaseO (85752eb)
mergeAll: introduce variant support <T, R> for mergeMap (656f2b3), closes #2372
single: predicate function receives indicies starting at 0 (#2396) (c81882f)
subscribeToResult: accept array-like as result (14685ba)

Features

webSocket: Add binaryType to config object (86acbd1), closes #2353
windowTime: maxWindowSize parameter in windowTime operator (381be3f), closes #1301

5.1.1 (2017-02-13)

Bug Fixes

bindCallback: input function context can now be properly set via output function (#2319) (cb91c76)
bindNodeCallback: input function context can now be properly set via output function (#2320) (3ec315d)
Subscription: fold ChildSubscription logic into Subscriber to prevent operators from leaking ChildSubscriptions. (#2360) (22e4c17), closes #2244 #2355

5.1.0 (2017-02-01)

Bug Fixes

catch: update the catch operator to dispose inner subscriptions if the catch subscription is di (#2271) (8a1e089)
combineLatest: Don't mutate array of observables passed to (#2276) (9b73c46)
ISubscription: update type definition of ISubscription::closed (#2249) (0c304a2)
Observable: Ensure the generic type of the Observer passed to Observable's initializer function is the same. (51a0bc1), closes #2166
Observable: errors thrown during subscription are now properly sent down error channel (#2313) (d4a9aac), closes #1833
reduce: index will properly start at 1 if no seed is provided, to match native Array reduce behavior (30a4ca4), closes #2290
repeatWhen: resulting observable will wait for the source to complete, even if a hot notifier completes first. (#2209) (c65a098), closes #2054
Subject: ensure subject properly throws ObjectUnsubscribedError when unsubscribed then resubscribed to (#2318) (41489eb)
TestScheduler: helper methods return proper types, HotObservable and ColdObservable instead of Observable (#2305) (758aae9)
windowTime: ensure windows created when only a timespan is passed are closed and cleaned up properly. (#2278) (d4533c4)

Features

fromEventPattern: support optional removeHandler (86960c2)
fromEventPattern: support pass signal from addHandler to removeHandler (01d0622)

5.0.3 (2017-01-05)

Bug Fixes

observeOn: seal memory leak involving old notifications (9664a38), closes #2244
Subscription: add will return Subscription that removes itself when unsubscribed (375d4a5)
TypeScript: interfaces that accepted Scheduler now accept IScheduler interface (a0d28a8)

5.0.2 (2016-12-23)

Bug Fixes

ajax: upload progress is now set correctly (#2200) (1a83041)
groupBy: Fix groupBy to dispose of outer subscription. (#2201) (2269618)

5.0.1 (2016-12-13)

Bug Fixes

TypeScript: pin to TypeScript 2.0.x, fix errors with Error subclassing (300504c)

5.0.0 (2016-12-13)

Bug Fixes

race: unsubscribe raced observables with immediate scheduler (#2158) (7dd533b)
SubscribeOnObservable: Add the source subscription to the action disposable so the source will (64e3815)

5.0.0-rc.5 (2016-12-07)

Bug Fixes

AjaxObservable: catch XHR send failures to observer (#2159) (128fb9c)
distinctKey: Removed accidental leftover reference of distinctKey (9fd8096), closes #2161
errors: Better error message when you return non-observable things, (#2152) (86a909c), closes #215
event: uses Object.prototype.toString.call on objects (#2143) (e036e79)
typings: type guard support for last, first, find and filter. (5f2e849)

Features

timeout: remove errorToSend argument, always throw TimeoutError (#2172) (98ea3d2)

BREAKING CHANGES

timeout: timeout no longer accepts the errorToSend argument

related #2141

5.0.0-rc.4 (2016-11-19)

Bug Fixes

partition: handles thisArg as expected (#2138) (6cf7296)
timeout: throw traceable TimeoutError (#2132) (9ebc46b)

5.0.0-rc.3 (2016-11-15)

Bug Fixes

typings: You no longer have to install the type definition for chai (#2112)

Features

filter: support type guards without casting (68b7922)
find: support type guards without casting (9058bf6)
first: support type guards without casting (3aa1988)
last: support type guards without casting (07ecd5e)

5.0.0-rc.2 (2016-11-05)

Bug Fixes

AjaxObservable: remove needless type param R from AjaxObservable.getJSON() (#2069) (0c3d4a4)
bufferCount: will behave as expected when startBufferEvery is less than bufferSize (#2076) (d13dbb4), closes #2062
build_docs: fix doc building (#1974) (1bbbe8b)
ErrorObservable: Add generic error type for ErrorObservable. (#2071) (9df86ba)
first: will now only emit one value in recursive cases (#2100) (a047e7a), closes #2098
fromEvent: Throw if event target is invalid (#2107) (147ce3e)
IteratorObservable: clarify the return type of IteratorObservable.create() (#2070) (4f0f865)
IteratorObservable: Observables from generators will now finalize when subscription ends (22d286a), closes #1938
multicast: fix a bug that caused multicast to omit messages after termination (#2021) (44fbc14)
Notification: materialize output will now match Rx4 (#2106) (c83bab9), closes #2105
Object.assign: stop polyfilling Object assign (#2080) (b5f8ab3)
Observable/Ajax: mount properties to origin readystatechange fn (#2025) (76a9abb)
operator/do: fix typings (9a40297)
reduce/scan: both scan/reduce operators now accepts undefined itself as a valid seed (#2050) (fee7585), closes #2047
ReplaySubject: observer now subscribed prior to running subscription function (#2046) (fea08e9), closes #2044
sample: source is now subscribed to before the notifier (ffe99e8), closes #2075
Symbol.iterator: will not polyfill Symbol iterator unless Symbol exists (#2082) (1138c99)
typings: fixed Subject.lift to have the same shape as Observable.lift (b07f597)
WebSocketSubject.prototype.multiplex: no longer nulls out socket after first unsubscribe (#2039) (a5e9cfe), closes #2037

Features

distinct: remove distinctKey, distinct signature change and perf improvements (#2049) (89612b2), closes #2009
groupBy: Adds subjectSelector argument to groupBy (#2023) (f94ceb9)
typescript: remove dependency to 3rd party es2015 definition (#2027) (4c31974), closes #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.

5.0.0-rc.1 (2016-10-11)

Bug Fixes

AjaxObservable: Fix for #1921 exposed AjaxObservable unsubscription error calling xhr.abort(). (4d23f87)
AnonymousSubject: is now exposed on Rx namespace (0a6f049), closes #2002
bufferTime: no errors with take after bufferTime with maxBufferSize (ecec640), closes #1944
docs: Fix esdoc for Observable.merge spread argument (b794e9b)
Observer: fix Observable#subscribe() signature to suggest correct usable (459d2a2)
operator: Fix take to complete when the source is re-entrant. (86615cb)
root: find global context (window/self/global) in a more safe way (a098132), closes #1930
schedulers: Queue, Asap, and AnimationFrame Schedulers should be Async if delay > 0 (d5c682c)
util/toSubscriber: Supplies the Subscriber constructor with emptyObserver as destination if no (8e7e4e3)
WebSocketSubject: ensure all internal state properly reset when socket is nulled out (62d242e), closes #1863

Features

cache: remove cache operator (1b23ace)
ES2015: stop publishing rxjs-es, ES2015 output no longer included in @reactivex/rxjs package under /dist/es6 (6be9968), closes #1671
filter: Observable.filter() can take type guard as the predicate function (d62fbf0)
find: Observable.find() can take type guard as the predicate function (b952718)
first: Observable.first() can take type guard as the predicate function (f99ca49)
last: Observable.last() can take type guard as the predicate function (76a8a57)
operators: Use lift in the operators that don't currently use lift. (68af9ef)
TypeScript: update TypeScript to v2.0 (3478b0b)

BREAKING CHANGES

cache: The .cache() operator has been removed, pending further discussion (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.

5.0.0-beta.12 (2016-09-09)

Bug Fixes

ajaxObservable: remove implicit dependency to map operator patch (1744ae9), closes #1874
AjaxObservable: return null value from JSON.Parse (#1904) (6ba374e)
catch: removed unneeded overload for catch (dd0e586)
max: do not return comparer values (f454e93), closes #1892
min: do not return comparer values (222fd17), closes #1892
operators: export reserved name operators on prototype (34c39dd), closes #1924
VirtualTimeScheduler: remove default maxFrame limit (1de86f1), closes #1889
WebSocketSubject: pass constructor errors onto observable (49c7d67)

Features

operator: Add repeatWhen operator (c288d88)
sequenceEqual: adds sequenceEqual operator (3c30293), closes #1882

5.0.0-beta.11 (2016-08-09)

Bug Fixes

ajaxObservable: only set default Content-Type header when no body is sent (#1830) (5a895e8)
AjaxObservable: drop resultSelector support in ajax method (7a77437), closes #1783
AsyncSubject: do not allow change value after complete (801f282), closes #1800
BoundNodeCallbackObservable: cast to any to access to private field in source (54f342f)
catch: accept selector returns ObservableInput (e55c62d), closes #1857
combineLatest: emit unique array instances with the default projection (2e30fd1)
Observable.from: standardise arguments (remove map/context) (aa30af2)
schedulers: fix asap and animationFrame schedulers to execute across async boundaries. (#182 (548ec2a), closes [(#1820](https://github.com/(/issues/1820) #1814
subscribeToResult: update subscription to iterables (5d6339a)
WebSocketSubject: prevent early close (#1831) (848a527), closes [(#1831](https://github.com/(/issues/1831)

Features

fromEvent: Pass through event listener options (#1845) (8f0dc01)
PairsObservable: add PairsObservable creation method (26bafff), closes #1804

BREAKING CHANGES

Observable.from: - Observable.from no longer supports the optional map function and associated context argument. This change has been reflected in the related constructors and their properties have been standardised.
AjaxObservable: ajax.*() method no longer support resultSelector, encourage to use map instead

5.0.0-beta.10 (2016-07-06)

Bug Fixes

AjaxObservable: ignore content-type for formdata (#1746) (43d05e7)
AjaxObservable: support withCredentials for CORS request (8084572), closes #1732 #1711
babel: fix an issue where babel could not compile Scheduler.async (#1807) (12c5c74), closes [(#1807](https://github.com/(/issues/1807) #1806
bufferTime: handle closing context when synchronously unsubscribed (4ce4433), closes #1763
multicast: Fixes multicast with selector to create a new source connection per subscriber. (c3ac852), closes [(#1774](https://github.com/(/issues/1774)
Subject: allow optional next value in type definition (3e0c6d9), closes #1728
WebSocketSubject: respect WebSockeCtor, support source/destination arguments in constructor. (#179 (cd8cdd0), closes #1745 #1784

5.0.0-beta.9 (2016-06-14)

Bug Fixes

cache: get correct caching behavior (#1765) (cb0b806), closes #1628
ConnectableObservable: fix ConnectableObservable connection handling issue (41ce80c)
typings: make HotObservavle._subscribe protected (1c3d6ea)
WebSocketSubject: WebSocketSubject will now chain operators properly (#1752) (bf54db4), closes #1745
window: don't track internal window subjects as subscriptions. (f3357b9)

Performance Improvements

fromEventPattern: ~3x improvement in speed (3dc1c00)

5.0.0-beta.8 (2016-05-22)

Bug Fixes

AnonymousSubject: allow anonymous observers as destination (0e2c28b)
combineLatest: rxjs/observable/combineLatest is now properly exported (21fab73), closes #1722
ConnectableObservable: fix race conditions in ConnectableObservable and refCount. (d1412bc)
Rx: remove kitchenSink and DOM, let Rx export all (f5090b4), closes #1650
ScalarObservable: set _isScalar to false when initialized with a scheduler (5037b3a)
Subject: correct Subject behaviors to be more like Rx4 (ba9ef2b)
subscriptions: fixes bug that tracked subscriber subscriptions twice. (29ff794)

Features

bufferTime: add maxBufferSize optional argument (cf45540), closes #1295
multicast: subjectfactory allows selectors (32fa3a4)
onErrorResumeNext: add onErrorResumeNext operator (51e022b), closes #1665
publish: support optional selectors (0e5991d), closes #1629

Performance Improvements

combineLatest: avoid splice and indexOf (33599cd)

BREAKING CHANGES

Subject: Subjects no longer duck-type as Subscriptions
Subject: Subjects will no longer throw when re-subscribed to if they are not unsubscribed
Subject: Subjects no longer automatically unsubscribe when completed or errored BREAKING CAHNGE: Minor scheduling changes to groupBy to ensure proper emission ordering
Rx: Rx.kitchenSink and Rx.DOM are removed, Rx export everything.

5.0.0-beta.7 (2016-04-27)

Bug Fixes

race: handle observables completes immediately (abac3d1), closes #1615
scan: accumulator passes current index (a3ec896), closes #1614

Features

Observable.generate: add generate static creation method (c03434c)

5.0.0-beta.6 (2016-04-12)

Bug Fixes

AjaxObservable: support json responseType on IE (bba13d8), closes #1381
bufferToggle: accepts closing selector returns promise (b1c575c)
bufferToggle: accepts promise as openings (3d22c7a)
bufferToggle: handle closingSelector completes immediately (02239fb)
typings: explictly export typings for arguments to functions that destructure configuration objects (ef305af)

Features

UnsubscriptionError: add messages from inner errors to output message (dd01279), closes #1590

Performance Improvements

DeferSubscriber: split up 'tryDefer()' into a method to call a factory function. (566f46b)

5.0.0-beta.5 (2016-04-05)

Bug Fixes

take: make 'take' unsubscribe when it reaches the total (9858aa3)

BREAKING CHANGES

Operator: Operator.prototype.call has been refactored to include both the destination Subscriber, and the source Observable the Operator is now responsible for describing it's own subscription process. (26423f4)

5.0.0-beta.4 (2016-03-29)

Bug Fixes

AjaxObservable: enhance compatibility (0ac7e1e)
Observable.if: accept promise as source (147166e)
mergeMap: allow concurrent to be set as the second argument for mergeMap and mergeMapTo (c003468)
observable: ensure the subscriber chain is complete before calling this._subscribe (1631224)
Symbol: fixed issue where $$observable is not defined (e66b2d8)
Observable.using: accepts factory returns promise (f8d7d1b)
windowToggle: handle closingSelector completes immediately (c755587), closes #1487

Features

ajax: add FormData support in AjaxObservable and add percent encoding for parameters (1f6119c)
Subscription: add() now returns a Subscription reference (a3f4552)
timestamp: add timestamp operator (80b1646), closes #1515

Performance Improvements

forkJoin: improve forkJoin perf slightly by removing unnecessary context tracking (280b985)

BREAKING CHANGES

Observable: Observable.fromArray was removed since it's deprecated on RxJS 4. You should use Observable.from instead.

5.0.0-beta.3 (2016-03-21)

Bug Fixes

AjaxObservable: update type definition for AjaxObservable (3f5c269), closes #1382
deferObservable: accepts factory returns promise (0cb44e1)
do: fix do operator to invoke observer message handlers in the right context. (67a2f25)
exhaustMap: remove innersubscription when it completes (7ca0859)
forEach: ensure that teardown logic is called when nextHandler throws (c50f528), closes #1411
forkJoin: accepts observables emitting null or undefined (6279d6b), closes #1362
forkJoin: dispose the inner subscriptions when the outer subscription is disposed (c7bf30c)
FutureAction: add support for periodic scheduling with setInterval instead of setTimeout (c4f5408)
Observable: introduce Subscribable interface that will be used instead of Observable in inpu (2256e7b)
Observable.prototype.forEach: removed thisArg to match es-observable spec (d5f1bcd)
package.json: install typings only after packages are installed (a48d796)
Schedulers: ensure schedulers can be reused after error in execution (202b79a)
takeLast: fix takeLast behavior to emit correct order (73eb658), closes #1407
typings: set map function parameter for Observable.from as optional (efa4dc3)

Features

AsyncScheduler: add AsyncScheduler implementation (4486c1f)
if: add static Observable.if creation operator. (f7ff7ec)
let: adds the let operator to Rx.KitchenSink (dca6504)
using: add static Observable.using creation operator. (6c76593)

BREAKING CHANGES

Observable.prototype.forEach: thisArg removed to match es-observable spec

5.0.0-beta.2 (2016-02-10)

Bug Fixes

ajax: fixes error in Chrome accessing responseText when responseType isn't text. (f3e2f73)
benchpress: fix issues with benchmarks (16894bb)
every: remove eager predicate calls (74c2c44)
forkJoin: fix forkJoin to complete if sources Array is empty. (412b13b)
groupBy: does not emit on unsubscribed group (6d08705)
groupBy: fix groupBy to use lift(), supports composability (815cfae), closes #1085
merge/concat: passed scalar observables will now complete properly (c01b92f), closes #1150
MergeMapSubscriber: clarify type definitions for MergeMapSubscriber's members (4ee5f02)
Observable.forEach: errors thrown in nextHandler reject returned promise (c5ead88), closes #1184
Observer: fix typing to allow observation via partial observables with PartialObservable<T (7b6da90)
Subject: align parameter order to match with RxJS4 (44dfa07), closes #1285
Subject: throw ObjectUnsubscribedError when unsubscribed (29b630b), closes #859
Subscriber: adds unsubscription when errors are thrown from user-land handlers. (dc67d21)
Subscription: fix leaks caused by unsubscribe functions that throw (9e88c2e)
subscriptions: unsubscribe correctly when a Subscriber throws during synchronous dispatch. (b1698fe)
typings: don't expose PromiseConstructor dependency (f59225b), closes #1270
typings: remove R from Operator.call, update operators accordingly (f27902d)
typings: remove redundant generics from call<T, R> and lift<T, R> (603c9eb)
windowTime: does not emit on unsubscribed window (595f4ef)

Features

cache: add cache operator (4308a04)
delayWhen: add delayWhen operator (17122f9)
distinct: add distinct operator (94a034d)
distinctKey: add distinctKey operator (fe4d57f)
from: allow Observable.from to handle array-like objects (7245005)
MapPolyfill: implement clear interface (e3fbd05)
operator: adds inspect and inspectTime operators (54f957b)
OuterSubscriber: notifyNext passes innersubscriber when next emits (1df8928), closes #1250
Subject: implement asObservable (aca3dd0), closes #1108
takeLast: adds takeLast operator. (3583cd3)

Performance Improvements

catch: remove tryCatch/errorObject for custom tryCatching, 1.3M -> 1.5M ops/sec (35caf74)
combineLatest: remove tryCatch/errorObject, 156k -> 221k ops/sec (1c7d639)
count: remove tryCatch/errorObject for custom tryCatching, 1.84M -> 1.97M ops/sec (869718d)
debounce: remove tryCatch/errorObject for custom tryCatching (90bf3f1)
distinct: increase perf from 60% of Rx4 to 1000% Rx4 (d026c41)
do: remove tryCatch/errorObject use, 104k -> 263k ops/sec improvement (ccba39d)
every: remove tryCatch/errorObject (~1.8x improvement) (14afeb6)
exhaustMap: remove tryCatch/errorObject (~10% improvement) (a55f459)
filter: remove tryCatch/errorObject for 2x perf improvement (086c4bf)
find: remove tryCatch/errorObject (~2x improvement) (aa35b2a)
first: remove tryCatch/errorObject for custom tryCatching, 970k ops -> 1.27M ops/sec (d8c835a)
groupBy: remove tryCatch/errorObject for custom tryCatching, 38% faster. (40c43f7)
last: remove tryCatch/errorObject for custom tryCatching, 960k -> 1.38M ops/sec (243ace3)
map: 2x increase from removing tryCatch/errorObject (231f729)
mergeMap: extra 1x factor gains from custom tryCatch member function (c4ce2fb)
mergeMapTo: remove tryCatch/errorObject (~2x improvement) (42bcced)
reduce: remove tryCatch/errorObject, optimize calls, 2-3x perf improvement (6186d46)
scan: remove tryCatch/errorObject for custom tryCatcher 1.75x improvement (338135d)
single: remove tryCatch/errorObject (~2.5x improvement) (2515cfb)
skipWhile: remove tryCatch/errorObject (~1.6x improvement) (cf002db)
Subscriber: double performance adding tryOrUnsub to Subscriber (4e75466)
switchMap: remove tryCatch/errorObject ~20% improvement (ec0199f)
switchMapTo: remove tryCatch/errorObject (~2x improvement) (c8cf72a)
takeWhile: remove tryCatch/errorObject (~6x improvement) (ef6c3c3)
withLatestFrom: remove tryCatch/errorObject, 92k -> 107k (16% improvement) (e4ccb44)
zip: extra 1x-2x factor gains from custom tryCatch member function (a1b0e52)

BREAKING CHANGES

Subject: Subject.create arguments have been swapped to match Rx 4 signature. Subject.create(observable, observer) is now Subject.create(observer, observable)
Observable patching: Patch files for static observable methods such as of and from can now be found in rxjs/add/observable/of, rxjs/add/observable/from, etc.
Observable modules: Observable modules for subclassed Observables like PromiseObservable, ArrayObservable are now in appropriately named files like rxjs/observable/PromiseObservable and rxjs/observable/ArrayObservable as opposed to rxjs/observable/fromPromise and rxjs/observable/fromArray, since they're not patching, they simply house the Observable implementations.

5.0.0-beta.1 (2016-01-13)

Bug Fixes

ajax: ensure post sending values (7aae0a3)
ajax: ensure that headers are set properly (1100bdd)
ajax: ensure XHR props are set after open (4a6a579)
ajax: ensure XHR send is being called (c569e3e)
ajax: remove unnecessary onAbort handling (ed8240e)
ajax: response properly based off responseType (b2a27a2)
ajax: should no longer succeed on 300 status (4d4fa32)
animationFrame: req/cancel animationFrame has to be called within the context of root. (30a11ee)
debounceTime: align value emit behavior as same as RxJS4 (5ee11e0), closes #1081
distinctUntilChanged: implement optional keySelector (f6a897c)
fromEvent: added spread operator for emitters that pass multiple arguments (3f8eabb)
fromObservable: expand compatibility for iterating string source (8f7924f), closes #1147
Immediate: update setImmediate compatibility on IE (39e6c0e), closes #1163
inspect: remove inspect and inspectTime operators (17341a4)
Readme: update link to bundle on npmcdn (44a8ca7)
ReplaySubject: Fix case-sensitive import. (de31f32)
ScalarObservable: fix issue where scalar map fired twice (c18c42e), closes #1142 #1140
scheduling: Fixes bugs in scheduled actions. (e050f01)
Subscriber: errors in nextHandler no longer propagate to errorHandler (f42eed2), closes #1135
WebSocketSubject: ensure error codes passed to WebSocket close method (3b1655e)
WebSocketSubject: ensure WebSocketSubject can be resubscribed (861a0c1)
WebSocketSubject: resultSelector and protocols specifications work properly (580f69a)

Features

ajax: add resultSelector and improve perf (6df755f)
ajax: adds ajax methods from rx-dom. (2ca4236)
bindNodeCallback: add Observable.bindNodeCallback (497bb0d), closes #736
Observable: add let to allow fluent style query building (5a2014c)
Observable: add pairwise operator (1432e59)
Operator: Expose the Operator interface to library consumers (29aa3af)
pluck: add pluck operator (8026906), closes #1134
race: add race operator (ee3b593)
scheduler: adds animationFrame scheduler. (e637b78)
WebSocketSubject: add basic WebSocketSubject implementation (58cd806)
WebSocketSubject.multiplex: add multiplex operator to WebSocketSubject (904d617)

BREAKING CHANGES

inspect: inspect and inspectTime were removed. Use withLatestFrom instead.
Subscriber/Observable: errors thrown in nextHandlers by consumer code will no longer propagate to the errorHandler.

5.0.0-beta.0 (2015-12-15)

Bug Fixes

micro-perf: rename immediate to queue scheduler (fe56b28), closes #1040
micro-perf: use the correnct scheduler on current-thread tests (3dff5eb)
operators: emit declarations for patch modules (676f82d)
test: make explicit unsubscription for observable (7f67b09)
test: make explicit unsubscription for observable (65e65e2)
window: fix window() to dispose window Subjects (5168f73)
windowCount: fix windowCount to dispose window Subjects (f29ee29)
windowTime: fix windowTime to dispose window Subjects (b73e260)
windowToggle: fix windowToggle to dispose window Subjects (15ff3f7)
windowWhen: fix windowWhen to dispose window Subjects (91c1941)

Features

inspect: added inspect operator (f9944ae)
inspectTime: add inspectTime operator (6835dcd)
sample: readd sample operator (e93bffc)
sampleTime: reimplement sampleTime with RxJS 4 behavior (6b77e69)
TestScheduler: add createTime() parser to return number (cb8cf6b)

BREAKING CHANGES

sampleTime: sampleTime now has the same behavior sample(number, scheduler) did in RxJS 4
sample: sample behavior returned to RxJS 4 behavior
inspectTime: sampleTime is now inspectTime
inspect: RxJS 5 sample behavior is now inspect
extended operators: All extended operators are now under the same operator directory as all others. This means that import "rxjs/add/operator/extended/min" is now import "rxjs/add/operator/min"

5.0.0-alpha.14 (2015-12-09)

Bug Fixes

every: handle thisArg for scalar and array observables (eae4b00)
SymbolShim: ensure for function even if Symbol already exists (e942776), closes #999
SymbolShim: Symbol polyfill is a function (1f57157), closes #988
timeoutWith: fix to avoid unnecessary inner subscription (6e63752)

Features

count: remove thisArg (878a1fd)
distinctUntilChanged: remove thisArg (bfc52d6)
exhaust: rename switchFirst operators to exhaust (9b565c9), closes #915
finally: remove thisArg (d4b02fc)
forEach: add thisArg (14ffce6), closes #878
single: remove thisArg (43af805)

BREAKING CHANGES

exhaust: switchFirst is now exhaust
exhaust: switchFirstMap is now exhaustMap
forEach: Observable.prototype.forEach argument order changed to accommodate thisArg. Optional PromiseCtor argument moved to third arg from second

5.0.0-alpha.13 (2015-12-08)

Bug Fixes

Observable: fix circular dependency issue. (b7672f4)
bufferToggle: fix unsubscriptions of closing Observable (439b641)
expand: accept scheduler parameter (79e9084), closes #841
publish: make script generate correct package names (10563d3)
repeat: preserve Subscriber chain in repeat() (d9a7328)
retry: preserve Subscriber chain in retry() (b429dac)
retryWhen: preserve Subscriber chain in retryWhen() (c9cb958)

Features

AsapScheduler: rename NextTickScheduler to AsapScheduler (3255fb3), closes #838
BehaviorSubject: add getValue method to access value (33b387b), closes #758
BehaviorSubject: now throws when getValue is called after unsubscription (1ddf116)
ObjectUnsubscribedError: add ObjectUnsubscribed error class (39836af)
Observable: subscribe accepts objects with rxSubscriber symbol (b7672f4)
QueueScheduler: rename ImmediateScheduler to QueueScheduler (66eb537)
Rx.Symbol.rxSubscriber: add rxSubscriber symbol (d4f1670)
Subject: add rxSubscriber symbol (d2e4257)
Subscriber: add rxSubscriber symbol (7bda360)
switchFirstMap: rename switchMapFirst to switchFirstMap (eddd4dc)

BREAKING CHANGES

AsapScheduler: Rx.Scheduler.nextTick (Rx 4's "default" scheduler) is now Rx.Scheduler.asap
QueueScheduler: Rx.Scheduler.immediate (Rx 4's "currentThread" scheduler) is now Rx.Scheduler.queue related #838
switchFirstMap: switchMapFirst is now switchFirstMap

5.0.0-alpha.12 (2015-12-04)

Bug Fixes

AsyncSubject: emit value when it's subscribed after complete (ed0eaf6)
bindCallback: only call function once even while scheduled (8637d47), closes #881
bufferToggle: fix disposal of subscriptions when errors occur (a20325c)
catch: fix catch to dispose old subscriptions (280f7ed), closes #763
catch: fix catch() to preserve Subscriber chain (e1447ac)
concat: accept scheduler parameter (8859702)
ConnectableObservable: fix ConnectableObservable connectability and refCounting (aef9578), closes #678
debounce: Fix debounce to unsubscribe duration Observables (dea7847)
expand: fix expand's concurrency behavior (01f86e5)
expand: terminate recursive call when destination completes (3b8cf94)
Observable: Subjects no longer wrapped in Subscriber (5cb0f2b), closes #825 #748
Observer: anonymous observers now allow missing handlers (a11c763), closes #723
operators: Remove shareReplay and shareBehavior (536a6a6), closes #710
publish: copy readme and license, remove scripts (439a2f3), closes #845
throttleTime: fix and rename throttleTime operator (3b0c1f3)
TimerObservable: accepts absolute date for dueTime (e284fb8), closes #648

Features

AsyncSubject: add AsyncSubject (34c05fe)
bindCallback: remove thisArg (feea9a1)
bindCallback: rename fromCallback to bindCallback (305d66d), closes #876
callback: Add Observable.fromCallback (9f751e7)
combineLatest: accept array of observable as parameter (2edd92c), closes #594
forkJoin: accept array of observable as parameter (d45f672)
mergeScan: support concurrency parameter for mergeScan (fe0eb37), closes #868
usage: add auto-patching operators (1ab3508), closes #860
skipWhile: add skipWhile operator (a2244e0)
switchFirst: add switchFirst and switchMapFirst (71e3dd1)
publishLast: add publishLast operator (9bef228), closes #883
takeWhile: add takeWhile operator (48e53ea), closes #695
takeWhile: remove thisArg (b5219a4)
throttle: add throttle operator with durationSelector (c3bf3e7), closes #496

Performance Improvements

ReplaySubject: fix memory leak of growing buffer (0a73b4d), closes #578

5.0.0-alpha.11 (2015-12-01)

Bug Fixes

catch: fix catch to dispose old subscriptions (280f7ed), closes #763
concat: accept scheduler parameter (8859702)
ConnectableObservable: fix ConnectableObservable connectability and refCounting (aef9578), closes #678
debounce: Fix debounce to unsubscribe duration Observables (dea7847)
expand: fix expand's concurrency behavior (01f86e5)
expand: terminate recursive call when destination completes (3b8cf94)
Observer: anonymous observers now allow missing handlers (a11c763), closes #723
operators: Remove shareReplay and shareBehavior (536a6a6), closes #710
test: make explicit unsubscription for observable (505f5b7)
throttleTime: fix and rename throttleTime operator (3b0c1f3)
TimerObservable: accepts absolute date for dueTime (e284fb8), closes #648

Features

callback: Add Observable.fromCallback (9f751e7)
combineLatest: accept array of observable as parameter (2edd92c), closes #594
forkJoin: accept array of observable as parameter (d45f672)
operator: add skipWhile operator (a2244e0)
operator: add switchFirst and switchMapFirst (71e3dd1)
takeWhile: add takeWhile operator (48e53ea), closes #695
throttle: add throttle operator with durationSelector (c3bf3e7), closes #496

Performance Improvements

ReplaySubject: fix memory leak of growing buffer (0a73b4d), closes #578

5.0.0-alpha.10 (2015-11-10)

Bug Fixes

Immediate: set immediate should no longer throw in Chrome (a3de7d9), closes #690

5.0.0-alpha.9 (2015-11-10)

Bug Fixes

util: incorrect Symbol.iterator for es6-shim (15bf32c)

Features

forkJoin: accept promise, resultselector as parameter of forkJoin (190f349), closes #507

5.0.0-alpha.8 (2015-11-06)

Bug Fixes

concat: handle a given scheduler correctly (8745216)
package.json: loosen the engines/npm semver range to prevent false warnings (df791c6)
skipUntil: unsubscribe source when it completes (8a4162b), closes #577
take: deal with total <= 0 and add tests (c5cc06f)
windowWhen: fix windowWhen with regard to unsubscriptions (8174947)

Features

mergeScan: add new mergeScan operator. (0ebb5bd)
multicast: support both Subject and subjectFactory arguments (f779027)

BREAKING CHANGES

publish: reverted to RxJS 4 behavior
publishBehavior: reverted to RxJS 4 behavior
publishReplay: reverted to RxJS 4 behavior
shareBehavior: removed
shareReplay: removed

5.0.0-alpha.7 (2015-10-27)

Bug Fixes

NextTickAction: fix unsubscription behavior (3d8264c), closes #582
buffer: cleanup notifier subscription when unsubscribed (1b30aa9)
delay: accepts absolute time delay (b109100)
mergeMapTo: mergeMapTo result should complete (6f9859e)
operator: update type definitions for union types (9d90c75), closes #581
repeat: fix inner subscription semantics for repeat (f67a596), closes #554
switchMapTo: reimplement switchMapTo to pass tests (d4789cd)
takeUntil: unsubscribe notifier when it completes (9415196)

Features

operator: add max operator (7fda036)
operator: add min operator (79cb6cf)
shareBehavior: add shareBehavior and its tests (97ff1ec)

5.0.0-alpha.6 (2015-10-17)

Bug Fixes

retryWhen: fix internal unsubscriptions (5aff5e8)
scan: scan now behaves like RxJS 4 scan (27f9c09)

5.0.0-alpha.5 (2015-10-16)

Bug Fixes

bufferToggle: fix bugs in order to pass tests (949fa31)
mergeAll: fix mergeAll micro performance tests to use mapTo instead of map. (616e86e)
package: correct typings path (a501b06)
repeat: add additional resubscription behavior (4f9f33b), closes #516
retry: fix internal unsubscriptions for retry (cc92f45), closes #546
windowToggle: fix window closing and unsubscription semantics (0cb21e6)

5.0.0-alpha.4 (2015-10-15)

Bug Fixes

Subject: fix missing unsubscribe call (9dd27d6)
Subscriber: avoid implicit any (08faaa9)
bufferWhen: onComplete of closings determine buffers (5d28a38)
fromEvent: make selector argument optional in fromEvent static method (71d90b4)
skipUntil: update skipUntil behavior with error, completion (6f0d98f), closes #518
windowCount: fix windowCount window opening times (908ae56), closes #273

Features

operator: add debounce operator (a1e652f), closes #493
operator: add debounceTime operator (dd2ba40)

Performance Improvements

ScalarObservable: add fast-path for mapping scalar observables (7b0d3dc)
count: fast-path for counting over scalars (c35a120)
filter: add fast-path for filtering scalar observables (e2e8954)
reduce: add fast-path for reducing over scalar observables (4c65136)
scan: fast-path for scanning scalars (0201b92)
skip: fast-path for skip over scalar observable (9b49936)
take: add fast-path for take over scalars (33053b1)

5.0.0-alpha.3 (2015-10-13)

Bug Fixes

Observable: fix type signature of some static operators (e5364de)
Subject.create: ensure operator property not required for Observable subscription (2259de2), closes #483
TestScheduler: stop sorting actual results (51db0b8), closes #422
benchpress: update benchpress dependencies and config (8513eaa), closes #348
buffer: change behavior of buffer to more closely match RxJS 4 (b66592d)
combineLatest: fix type signature (a3e6deb)
defer: fix type signature (11327b9)
empty: fix type signature (893cb7e)
fromPromise: fix type signature (17415fa)
groupBy: durationSelector cannot keep source alive (57e4207)
groupBy: fix bugs related to group resets (23a7574)
groupBy: fix bugs with groupBy (86992c6)
interval: fix signature type (9c238c0)
operator: startWith operator accepts scheduler, multiple values (d1d339a)
operators: reorder signature of resultSelectors (fc1724d)
range: fix type signature (9237d0b)
timeout: fix absolute timeout behavior (8ec06cf)
timeout: update behavior of timeout, timeoutWith (16bd691)
timer: fix type signature (fffb96c)
window: handle closingNotifier errors/completes (42beff1)

Features

TestScheduler: support unsubscription marbles (ffb0bb9)
count: add predicate support in count() (42d1add), closes #425
dematerialize: add dematerialize operator (0a8b074), closes #475
do: do will now handle an observer as an argument (c1a4994), closes #476
first: add resultSelector (3c20fcc), closes #417
last: add resultSelector argument (5a4896c), closes #418
operator: add every operator (d11f32e)
operator: add timeInterval operator (6cc0615)
share: add the share operator (c36f2be), closes #439
shareReplay: add the shareReplay() operator (65c84ea)

Performance Improvements

ReplaySubject: remove unnecessary computation (488ac2e)

BREAKING CHANGES

operators with resultSelectors (mergeMap, concatMap, switchMap, etc): The function signature of resultSelectors used to be (innerValue, outerValue, innerIndex, outerIndex) but this commits changes it to be (outerValue, innerValue, outerIndex, innerIndex), to match signatures in RxJS 4.

5.0.0-alpha.2 (2015-09-30)

Bug Fixes

concat: let observable concat instead of merge (c17e832)

Features

operator: add find, findIndex operator (7c6cc9d)
operator: add first operator (274c233)
operator: add ignoreElements operator (fe1a952)
zip: zip now supports never-ending iterables (a5684ba), closes #397

5.0.0-alpha.1 (2015-09-23)

Bug Fixes

Promises: escape promise error trap (c69088a)
TestScheduler: ensure TestScheduler subscribes to expectations before hot subjects (b9b2ba5)
TestScheduler: properly schedule actions added dynamically (069ede4)
buffer: do not emit empty buffer when completes (252fccb)
bufferTime: inner intervals will now clean up properly (4ef41b0)
expand: Fix expand to stay open until the source Observable completes. (20ef785)
expand: fix expand operator to match Rx3 (67f9623)
last: emit value matches with predicate instead of result of predicate (0f635ee)
merge: fix issues with async in merge (7a15304)
mergeAll: merge all will properly handle async observables (43b63cc)
package: specify supported npm version (f72e622)
switchAll: switch all will properly handle async observables (c2e2d29)
switchAll/switchLatest: inner subscriptions should now properly unsub (38a45f8), closes #302

Features

combineLatest: supports promises, iterables, lowercase-o observables and Observables (ce76e4e)
config: add global configuration of Promise capability (e7eb5d7), closes #115
expand: now handles promises, iterables and lowercase-o observables (c5239e9)
mergeAll: now supports promises, iterables and lowercase-o observables (4c16aa6)
operator: add elementAt operator (cd562c4)
operator: add isEmpty operator (80f72c5)
operator: add last operator (d841b11), closes #304 #306
operator: add single operator (49484a2)
switch: add promise, iterable and array support (24fdd34)
withLatestFrom: default array output, handle other types (cb393dc)
zip: supports promises, iterables and lowercase-o observables (d332a0e)

0.0.0-prealpha.3 (2015-09-11)

Bug Fixes

root: use self as the root object when available (0428a85)

0.0.0-prealpha.2 (2015-09-11)

Bug Fixes

bufferCount: set default value for skip argument, do not emit empty buffer at the end (2c1a9dc)
windowCount: set default value for skip argument, do not emit empty buffer at the end (a513dbb)

Features

Observable: add static create method (e0d27ba), closes #255
TestScheduler: add TestScheduler (b23daf1), closes #270
VirtualTimeScheduler: add VirtualTimeScheduler (96f9386), closes #269
operator: add sample and sampleTime (9e62789), closes #178

0.0.0-prealpha.1 (2015-09-02)

Bug Fixes

combineLatest: check for limits higher than total observable count (81e5dfb)
rx: add hack to export global until better global build exists (1a543b0)
subscription-ref: add setter for isDisposed (6fe5427)
take: complete on limit reached (801a711)

Features

benchpress: add benchpress config and flatmap spec (0441dea)
catch: add catch operator, related to #141, closes #130 (94b4c01), closes #130
from: let from handle any "observablesque" (526d4c3), closes #156 #236
index: add index module which requires commonjs build (379d2d1), closes #117
observable: add Observable.all (forkJoin) (44a4ee1)
operator: Add count operator. (30dd894)
operator: Add distinctUntilChanged and distinctUntilKeyChanged (f9ba4da)
operator: Add do operator. (7d9b52b)
operator: Add expand operator. (47b178b)
operator: Add minimal delay operator. (7851885)
operator: add buffer operators: buffer, bufferWhen, bufferTime, bufferCount, and bufferTog (9f8347f), closes #207
operator: add debounce (f03adaf), closes #193
operator: add defaultIfEmpty (c80688b)
operator: add finally (526e4c9)
operator: add fromEventPattern creator function (1095d4c)
operator: add groupBy (1e13aea), closes #165
operator: add materialize. closes #132 (6d9f6ae), closes #132
operator: add publishBehavior operator and spec (249ab8d)
operator: add publishReplay operator and spec (a0c47d6)
operator: add retry (4451db5)
operator: add retryWhen operator. closes #129 (65eb50e), closes #129
operator: add skipUntil (ef2620e), closes #180
operator: add throttle (1d735b9), closes #191
operator: add timeout and timeoutWith (bb440ad), closes #244
operator: add toPromise operator. closes #159 (361a53b), closes #159
operator: add window operators: window, windowWhen, windowTime, windowCount, windowToggle (9f5d510), closes #195
operator: add withLatestFrom (322218a), closes #209
operator: implement startWith(). (1f36d99)

Files

CHANGELOG.md

Latest commit

History

CHANGELOG.md

File metadata and controls

7.0.0-beta.0 (2020-04-03)

Bug Fixes

Features

BREAKING CHANGES

7.0.0-alpha.1 (2019-12-27)

Bug Fixes

Features

7.0.0-alpha.0 (2019-09-18)

Bug Fixes

Features

BREAKING CHANGES

6.5.3 (2019-09-03)

Bug Fixes

6.5.2 (2019-05-10)

Bug Fixes

6.5.1 (2019-04-23)

Bug Fixes

6.5.0 (2019-04-23)

Bug Fixes

Features

Performance Improvements

6.4.0 (2019-01-30)

Bug Fixes

Features

Performance Improvements

6.3.3 (2018-09-25)

Bug Fixes

6.3.2 (2018-09-04)

Bug Fixes

6.3.1 (2018-08-31)

Bug Fixes

6.3.0 (2018-08-30)

Bug Fixes

Features

6.2.2 (2018-07-13)

Bug Fixes

6.2.1 (2018-06-12)

Bug Fixes

Performance Improvements

6.2.0 (2018-05-22)

Bug Fixes

Features

6.1.0 (2018-05-03)

Bug Fixes

Features

6.0.0 (2018-04-24)

Bug Fixes

Code Refactoring

Features

BREAKING CHANGES

6.0.0-uncanny-rc.7 (2018-04-13)

Bug Fixes

6.0.0-ucandoit-rc.6 (2018-04-13)

Bug Fixes

6.0.0-uber-rc.5 (2018-04-13)

Bug Fixes

6.0.0-turbo-rc.4 (2018-04-12)

Bug Fixes

6.0.0-terrific-rc.3 (2018-04-11)

Features

6.0.0-tenacious-rc.2 (2018-04-11)

Bug Fixes

BREAKING CHANGES

6.0.0-tactical-rc.1 (2018-04-07)

Bug Fixes

Features

6.0.0-rc.0 (2018-03-31)

Bug Fixes

Features

Performance Improvements

BREAKING CHANGES

6.0.0-beta.4 (2018-03-29)

Bug Fixes

Features