declare module Rx {

// Type alias for observables and promises

export type ObservableOrPromise<T> = IObservable<T> | Observable<T> | Promise<T>;

export type ArrayLike<T> = Array<T> | { length: number;[index: number]: T; };

// Type alias for arrays and array like objects

export type ArrayOrIterable<T> = ArrayLike<T> | Iterable<T>;

/**

* Promise A+

*/

export type Promise<T> = PromiseLike<T>;

/**

* Promise A+

*/

export type IPromise<T> = PromiseLike<T>;

/**

* Represents a push-style collection.

*/

export interface IObservable<T> {}

/**

* Represents a push-style collection.

*/

export interface Observable<T> extends IObservable<T> {}

export module internals {

export interface EmptyError extends Error { message: string; }

export interface EmptyErrorStatic { new (): EmptyError; }

export interface ObjectDisposedError extends Error { message: string; }

export interface ObjectDisposedErrorStatic { new (): ObjectDisposedError; }

export interface ArgumentOutOfRangeError extends Error { message: string; }

export interface ArgumentOutOfRangeErrorStatic { new (): ArgumentOutOfRangeError; }

export interface NotSupportedError extends Error { message: string; }

export interface NotSupportedErrorStatic { new (): NotSupportedError; }

export interface NotImplementedError extends Error { message: string; }

export interface NotImplementedErrorStatic { new (): NotImplementedError; }

}

export module helpers {

export var notImplemented: () => internals.NotImplementedError;

export var notSupported: () => internals.NotSupportedError;

}

export module internals {

export var bindCallback: (func: Function, thisArg: any, argCount: number) => Function;

}

export module internals {

export var isEqual : (left: any, right: any) => boolean;

}

export interface IDisposable {

dispose(): void;

}

export interface Disposable extends IDisposable {

/** Is this value disposed. */

isDisposed?: boolean;

}

interface DisposableStatic {

/**

* Provides a set of static methods for creating Disposables.

* @param {Function} dispose Action to run during the first call to dispose. The action is guaranteed to be run at most once.

*/

new (action: () => void): Disposable;

/**

* Creates a disposable object that invokes the specified action when disposed.

* @param {Function} dispose Action to run during the first call to dispose. The action is guaranteed to be run at most once.

* @return {Disposable} The disposable object that runs the given action upon disposal.

*/

create(action: () => void): Disposable;

/**

* Gets the disposable that does nothing when disposed.

*/

empty: IDisposable;

/**

* Validates whether the given object is a disposable

* @param {Object} Object to test whether it has a dispose method

* @returns {Boolean} true if a disposable object, else false.

*/

isDisposable(d: any): boolean;

}

/**

* Provides a set of static methods for creating Disposables.

* @param {Function} dispose Action to run during the first call to dispose. The action is guaranteed to be run at most once.

*/

export var Disposable: DisposableStatic;

export module config {

export var Promise: { new <T>(resolver: (resolvePromise: (value: T) => void, rejectPromise: (reason: any) => void) => void): IPromise<T>; };

}

export module helpers {

export var noop: () => void;

export var notDefined: (value: any) => boolean;

export var identity: <T>(value: T) => T;

export var defaultNow: () => number;

export var defaultComparer: (left: any, right: any) => boolean;

export var defaultSubComparer: (left: any, right: any) => number;

export var defaultKeySerializer: (key: any) => string;

export var defaultError: (err: any) => void;

export var isPromise: (p: any) => boolean;

export var asArray: <T>(...args: T[]) => T[];

export var not: (value: any) => boolean;

export var isFunction: (value: any) => boolean;

}

export type _Selector<T, TResult> = (value: T, index: number, observable: Observable<T>) => TResult;

export type _ValueOrSelector<T, TResult> = TResult | _Selector<T, TResult>;

export type _Predicate<T> = _Selector<T, boolean>;

export type _Comparer<T, TResult> = (value1: T, value2: T) => TResult;

export type _Accumulator<T, TAcc> = (acc: TAcc, value: T) => TAcc;

export module special {

export type _FlatMapResultSelector<T1, T2, TResult> = (value: T1, selectorValue: T2, index: number, selectorOther: number) => TResult;

}

export interface IObservable<T> {

/**

* Subscribes an o to the observable sequence.

* @param {Mixed} [oOrOnNext] The object that is to receive notifications or an action to invoke for each element in the observable sequence.

* @param {Function} [onError] Action to invoke upon exceptional termination of the observable sequence.

* @param {Function} [onCompleted] Action to invoke upon graceful termination of the observable sequence.

* @returns {Diposable} A disposable handling the subscriptions and unsubscriptions.

*/

subscribe(observer: IObserver<T>): IDisposable;

/**

* Subscribes an o to the observable sequence.

* @param {Mixed} [oOrOnNext] The object that is to receive notifications or an action to invoke for each element in the observable sequence.

* @param {Function} [onError] Action to invoke upon exceptional termination of the observable sequence.

* @param {Function} [onCompleted] Action to invoke upon graceful termination of the observable sequence.

* @returns {Diposable} A disposable handling the subscriptions and unsubscriptions.

*/

subscribe(onNext?: (value: T) => void, onError?: (exception: any) => void, onCompleted?: () => void): IDisposable;

}

export interface Observable<T> {

/**

* Subscribes an o to the observable sequence.

* @param {Mixed} [oOrOnNext] The object that is to receive notifications or an action to invoke for each element in the observable sequence.

* @param {Function} [onError] Action to invoke upon exceptional termination of the observable sequence.

* @param {Function} [onCompleted] Action to invoke upon graceful termination of the observable sequence.

* @returns {Diposable} A disposable handling the subscriptions and unsubscriptions.

*/

subscribe(observer: IObserver<T>): IDisposable;

/**

* Subscribes an o to the observable sequence.

* @param {Mixed} [oOrOnNext] The object that is to receive notifications or an action to invoke for each element in the observable sequence.

* @param {Function} [onError] Action to invoke upon exceptional termination of the observable sequence.

* @param {Function} [onCompleted] Action to invoke upon graceful termination of the observable sequence.

* @returns {Diposable} A disposable handling the subscriptions and unsubscriptions.

*/

subscribe(onNext?: (value: T) => void, onError?: (exception: any) => void, onCompleted?: () => void): IDisposable;

/**

* Subscribes to the next value in the sequence with an optional "this" argument.

* @param {Function} onNext The function to invoke on each element in the observable sequence.

* @param {Any} [thisArg] Object to use as this when executing callback.

* @returns {Disposable} A disposable handling the subscriptions and unsubscriptions.

*/

subscribeOnNext(onNext: (value: T) => void, thisArg?: any): IDisposable;

/**

* Subscribes to an exceptional condition in the sequence with an optional "this" argument.

* @param {Function} onError The function to invoke upon exceptional termination of the observable sequence.

* @param {Any} [thisArg] Object to use as this when executing callback.

* @returns {Disposable} A disposable handling the subscriptions and unsubscriptions.

*/

subscribeOnError(onError: (exception: any) => void, thisArg?: any): IDisposable;

/**

* Subscribes to the next value in the sequence with an optional "this" argument.

* @param {Function} onCompleted The function to invoke upon graceful termination of the observable sequence.

* @param {Any} [thisArg] Object to use as this when executing callback.

* @returns {Disposable} A disposable handling the subscriptions and unsubscriptions.

*/

subscribeOnCompleted(onCompleted: () => void, thisArg?: any): IDisposable;

/**

* Subscribes an o to the observable sequence.

* @param {Mixed} [oOrOnNext] The object that is to receive notifications or an action to invoke for each element in the observable sequence.

* @param {Function} [onError] Action to invoke upon exceptional termination of the observable sequence.

* @param {Function} [onCompleted] Action to invoke upon graceful termination of the observable sequence.

* @returns {Diposable} A disposable handling the subscriptions and unsubscriptions.

*/

forEach(observer: IObserver<T>): IDisposable;

/**

* Subscribes an o to the observable sequence.

* @param {Mixed} [oOrOnNext] The object that is to receive notifications or an action to invoke for each element in the observable sequence.

* @param {Function} [onError] Action to invoke upon exceptional termination of the observable sequence.

* @param {Function} [onCompleted] Action to invoke upon graceful termination of the observable sequence.

* @returns {Diposable} A disposable handling the subscriptions and unsubscriptions.

*/

forEach(onNext?: (value: T) => void, onError?: (exception: any) => void, onCompleted?: () => void): IDisposable;

}

export interface ObservableStatic {

/**

* Determines whether the given object is an Observable

* @param {Any} An object to determine whether it is an Observable

* @returns {Boolean} true if an Observable, else false.

*/

isObservable(o: any): boolean;

}

export var Observable: ObservableStatic;

export module internals {

export var inherits: (child, parent) => void;

export var addProperties: (obj, ...sources: any[]) => void;

export var addRef: <T>(xs: Observable<T>, r: { getDisposable(): IDisposable; }) => Observable<T>;

}

export module internals {

export interface ScheduledItem<TTime> {

scheduler: IScheduler;

state: TTime;

action: (scheduler: IScheduler, state: any) => IDisposable;

dueTime: TTime;

comparer: (x: TTime, y: TTime) => number;

disposable: SingleAssignmentDisposable;

invoke(): void;

compareTo(other: ScheduledItem<TTime>): number;

isCancelled(): boolean;

invokeCore(): IDisposable;

}

interface ScheduledItemStatic {

new <TTime>(scheduler: IScheduler, state: any, action: (scheduler: IScheduler, state: any) => IDisposable, dueTime: TTime, comparer?: _Comparer<TTime, number>):ScheduledItem<TTime>;

}

export var ScheduledItem: ScheduledItemStatic

}

export module internals {

// Priority Queue for Scheduling

export interface PriorityQueue<TTime> {

length: number;

isHigherPriority(left: number, right: number): boolean;

percolate(index: number): void;

heapify(index: number): void;

peek(): ScheduledItem<TTime>;

removeAt(index: number): void;

dequeue(): ScheduledItem<TTime>;

enqueue(item: ScheduledItem<TTime>): void;

remove(item: ScheduledItem<TTime>): boolean;

}

interface PriorityQueueStatic {

new <T>(capacity: number) : PriorityQueue<T>;

count: number;

}

export var PriorityQueue : PriorityQueueStatic;

}

/**

* Represents a group of disposable resources that are disposed together.

* @constructor

*/

export interface CompositeDisposable extends Disposable {

/**

* Adds a disposable to the CompositeDisposable or disposes the disposable if the CompositeDisposable is disposed.

* @param {Mixed} item Disposable to add.

*/

add(item: IDisposable): void;

/**

* Removes and disposes the first occurrence of a disposable from the CompositeDisposable.

* @param {Mixed} item Disposable to remove.

* @returns {Boolean} true if found; false otherwise.

*/

remove(item: IDisposable): void;

}

interface CompositeDisposableStatic {

/**

* Represents a group of disposable resources that are disposed together.

* @constructor

*/

new (...disposables: Rx.IDisposable[]): CompositeDisposable;

/**

* Represents a group of disposable resources that are disposed together.

* @constructor

*/

new(disposables: Rx.IDisposable[]): CompositeDisposable;

}

export var CompositeDisposable: CompositeDisposableStatic;

export interface SingleAssignmentDisposable {

/** Performs the task of cleaning up resources. */

dispose(): void;

/** Is this value disposed. */

isDisposed: boolean;

getDisposable(): IDisposable;

setDisposable(value: IDisposable): void;

}

interface SingleAssignmentDisposableStatic {

new() : SingleAssignmentDisposable;

}

export var SingleAssignmentDisposable : SingleAssignmentDisposableStatic;

export interface SerialDisposable {

/** Performs the task of cleaning up resources. */

dispose(): void;

/** Is this value disposed. */

isDisposed: boolean;

getDisposable(): IDisposable;

setDisposable(value: IDisposable): void;

}

interface SerialDisposableStatic {

new() : SerialDisposable;

}

export var SerialDisposable : SerialDisposableStatic;

/**

* Represents a disposable resource that only disposes its underlying disposable resource when all dependent disposable objects have been disposed.

*/

export interface RefCountDisposable extends Disposable {

/** Performs the task of cleaning up resources. */

dispose(): void;

/** Is this value disposed. */

isDisposed: boolean;

/**

* Returns a dependent disposable that when disposed decreases the refcount on the underlying disposable.

* @returns {Disposable} A dependent disposable contributing to the reference count that manages the underlying disposable's lifetime.

*/

getDisposable(): IDisposable;

}

interface RefCountDisposableStatic {

/**

* Initializes a new instance of the RefCountDisposable with the specified disposable.

* @constructor

* @param {Disposable} disposable Underlying disposable.

*/

new(disposable: IDisposable): RefCountDisposable;

}

export var RefCountDisposable : RefCountDisposableStatic;

export interface IScheduler {

/**

* Schedules an action to be executed.

* @param {Function} action Action to execute.

* @returns {Disposable} The disposable object used to cancel the scheduled action (best effort).

*/

schedule(action: () => void): IDisposable;

/**

* Schedules an action to be executed.

* @param state State passed to the action to be executed.

* @param {Function} action Action to be executed.

* @returns {Disposable} The disposable object used to cancel the scheduled action (best effort).

*/

scheduleWithState<TState>(state: TState, action: (scheduler: IScheduler, state: TState) => IDisposable): IDisposable;

/**

* Schedules an action to be executed after the specified relative due time.

* @param {Function} action Action to execute.

* @param {Number} dueTime Relative time after which to execute the action.

* @returns {Disposable} The disposable object used to cancel the scheduled action (best effort).

*/

scheduleWithRelative(dueTime: number, action: () => void): IDisposable;

/**

* Schedules an action to be executed after dueTime.

* @param state State passed to the action to be executed.

* @param {Function} action Action to be executed.

* @param {Number} dueTime Relative time after which to execute the action.

* @returns {Disposable} The disposable object used to cancel the scheduled action (best effort).

*/

scheduleWithRelativeAndState<TState>(state: TState, dueTime: number, action: (scheduler: IScheduler, state: TState) => IDisposable): IDisposable;

/**

* Schedules an action to be executed at the specified absolute due time.

* @param {Function} action Action to execute.

* @param {Number} dueTime Absolute time at which to execute the action.

* @returns {Disposable} The disposable object used to cancel the scheduled action (best effort).

*/

scheduleRecursiveWithAbsolute(dueTime: number, action: (action: (dueTime: number) => void) => void): IDisposable;

/**

* Schedules an action to be executed at dueTime.

* @param {Mixed} state State passed to the action to be executed.

* @param {Function} action Action to be executed.

* @param {Number}dueTime Absolute time at which to execute the action.

* @returns {Disposable} The disposable object used to cancel the scheduled action (best effort).

*/

scheduleRecursiveWithAbsoluteAndState<TState>(state: TState, dueTime: number, action: (state: TState, action: (state: TState, dueTime: number) => void) => void): IDisposable;

}

export interface SchedulerStatic {

new (

now: () => number,

schedule: (state: any, action: (scheduler: IScheduler, state: any) => IDisposable) => IDisposable,

scheduleRelative: (state: any, dueTime: number, action: (scheduler: IScheduler, state: any) => IDisposable) => IDisposable,

scheduleAbsolute: (state: any, dueTime: number, action: (scheduler: IScheduler, state: any) => IDisposable) => IDisposable): Rx.IScheduler;

/** Gets the current time according to the local machine's system clock. */

now: number;

/**

* Normalizes the specified TimeSpan value to a positive value.

* @param {Number} timeSpan The time span value to normalize.

* @returns {Number} The specified TimeSpan value if it is zero or positive; otherwise, 0

*/

normalize(timeSpan: number): number;

}

/** Provides a set of static properties to access commonly used schedulers. */

export var Scheduler: SchedulerStatic;

export interface IScheduler {

/**

* Schedules an action to be executed recursively.

* @param {Function} action Action to execute recursively. The parameter passed to the action is used to trigger recursive scheduling of the action.

* @returns {Disposable} The disposable object used to cancel the scheduled action (best effort).

*/

scheduleRecursive(action: (action: () => void) => void): IDisposable;

/**

* Schedules an action to be executed recursively.

* @param {Mixed} state State passed to the action to be executed.

* @param {Function} action Action to execute recursively. The last parameter passed to the action is used to trigger recursive scheduling of the action, passing in recursive invocation state.

* @returns {Disposable} The disposable object used to cancel the scheduled action (best effort).

*/

scheduleRecursiveWithState<TState>(state: TState, action: (state: TState, action: (state: TState) => void) => void): IDisposable;

/**

* Schedules an action to be executed recursively after a specified relative due time.

* @param {Function} action Action to execute recursively. The parameter passed to the action is used to trigger recursive scheduling of the action at the specified relative time.

* @param {Number}dueTime Relative time after which to execute the action for the first time.

* @returns {Disposable} The disposable object used to cancel the scheduled action (best effort).

*/

scheduleRecursiveWithRelative(dueTime: number, action: (action: (dueTime: number) => void) => void): IDisposable;

/**

* Schedules an action to be executed recursively after a specified relative due time.

* @param {Mixed} state State passed to the action to be executed.

* @param {Function} action Action to execute recursively. The last parameter passed to the action is used to trigger recursive scheduling of the action, passing in the recursive due time and invocation state.

* @param {Number}dueTime Relative time after which to execute the action for the first time.

* @returns {Disposable} The disposable object used to cancel the scheduled action (best effort).

*/

scheduleRecursiveWithRelativeAndState<TState>(state: TState, dueTime: number, action: (state: TState, action: (state: TState, dueTime: number) => void) => void): IDisposable;

/**

* Schedules an action to be executed recursively at a specified absolute due time.

* @param {Function} action Action to execute recursively. The parameter passed to the action is used to trigger recursive scheduling of the action at the specified absolute time.

* @param {Number}dueTime Absolute time at which to execute the action for the first time.

* @returns {Disposable} The disposable object used to cancel the scheduled action (best effort).

*/

scheduleRecursiveWithAbsolute(dueTime: number, action: (action: (dueTime: number) => void) => void): IDisposable;

/**

* Schedules an action to be executed recursively at a specified absolute due time.

* @param {Mixed} state State passed to the action to be executed.

* @param {Function} action Action to execute recursively. The last parameter passed to the action is used to trigger recursive scheduling of the action, passing in the recursive due time and invocation state.

* @param {Number}dueTime Absolute time at which to execute the action for the first time.

* @returns {Disposable} The disposable object used to cancel the scheduled action (best effort).

*/

scheduleRecursiveWithAbsoluteAndState<TState>(state: TState, dueTime: number, action: (state: TState, action: (state: TState, dueTime: number) => void) => void): IDisposable;

}

export interface IScheduler {

/**

* Schedules a periodic piece of work by dynamically discovering the scheduler's capabilities. The periodic task will be scheduled using window.setInterval for the base implementation.

* @param {Number} period Period for running the work periodically.

* @param {Function} action Action to be executed.

* @returns {Disposable} The disposable object used to cancel the scheduled recurring action (best effort).

*/

schedulePeriodic(period: number, action: () => void): IDisposable;

/**

* Schedules a periodic piece of work by dynamically discovering the scheduler's capabilities. The periodic task will be scheduled using window.setInterval for the base implementation.

* @param {Mixed} state Initial state passed to the action upon the first iteration.

* @param {Number} period Period for running the work periodically.

* @param {Function} action Action to be executed, potentially updating the state.

* @returns {Disposable} The disposable object used to cancel the scheduled recurring action (best effort).

*/

schedulePeriodicWithState<TState>(state: TState, period: number, action: (state: TState) => TState): IDisposable;

}

export interface IScheduler {

/**

* Returns a scheduler that wraps the original scheduler, adding exception handling for scheduled actions.

* @param {Function} handler Handler that's run if an exception is caught. The exception will be rethrown if the handler returns false.

* @returns {Scheduler} Wrapper around the original scheduler, enforcing exception handling.

*/

catchError(handler: Function): IScheduler;

/**

* Returns a scheduler that wraps the original scheduler, adding exception handling for scheduled actions.

* @param {Function} handler Handler that's run if an exception is caught. The exception will be rethrown if the handler returns false.

* @returns {Scheduler} Wrapper around the original scheduler, enforcing exception handling.

*/

catch(handler: Function): IScheduler;

}

export module internals {

export interface SchedulePeriodicRecursive {

start(): IDisposable;

}

interface SchedulePeriodicRecursiveStatic {

new (scheduler, state, period, action) : SchedulePeriodicRecursive;

}

export var SchedulePeriodicRecursive: SchedulePeriodicRecursiveStatic;

}

export interface SchedulerStatic {

immediate: IScheduler;

}

export interface ICurrentThreadScheduler extends IScheduler {

scheduleRequired(): boolean;

}

export interface SchedulerStatic {

currentThread: ICurrentThreadScheduler;

}

export interface SchedulerStatic {

timeout: IScheduler;

default: IScheduler;

}

/**

* Supports push-style iteration over an observable sequence.

*/

export interface IObserver<T> {

/**

* Notifies the observer of a new element in the sequence.

* @param {Any} value Next element in the sequence.

*/

onNext(value: T): void;

/**

* Notifies the observer that an exception has occurred.

* @param {Any} error The error that has occurred.

*/

onError(exception: any): void;

/**

* Notifies the observer of the end of the sequence.

*/

onCompleted(): void;

}

export interface Observer<T> {

/**

* Notifies the observer of a new element in the sequence.

* @param {Any} value Next element in the sequence.

*/

onNext(value: T): void;

/**

* Notifies the observer that an exception has occurred.

* @param {Any} error The error that has occurred.

*/

onError(exception: any): void;

/**

* Notifies the observer of the end of the sequence.

*/

onCompleted(): void;

}

export interface ObserverStatic {

/**

* Creates an observer from the specified OnNext, along with optional OnError, and OnCompleted actions.

* @param {Function} [onNext] Observer's OnNext action implementation.

* @param {Function} [onError] Observer's OnError action implementation.

* @param {Function} [onCompleted] Observer's OnCompleted action implementation.

* @returns {Observer} The observer object implemented using the given actions.

*/

create<T>(onNext?: (value: T) => void, onError?: (exception: any) => void, onCompleted?: () => void): Observer<T>;

}

/**

* Supports push-style iteration over an observable sequence.

*/

export var Observer: ObserverStatic;

/**

* Represents a notification to an observer.

*/

export interface Notification<T> {

/**

* Invokes the delegate corresponding to the notification or the observer's method corresponding to the notification and returns the produced result.

*

* @memberOf Notification

* @param {Any} observerOrOnNext Delegate to invoke for an OnNext notification or Observer to invoke the notification on..

* @param {Function} onError Delegate to invoke for an OnError notification.

* @param {Function} onCompleted Delegate to invoke for an OnCompleted notification.

* @returns {Any} Result produced by the observation.

*/

accept(observer: IObserver<T>): void;

/**

* Invokes the delegate corresponding to the notification or the observer's method corresponding to the notification and returns the produced result.

*

* @memberOf Notification

* @param {Any} observerOrOnNext Delegate to invoke for an OnNext notification or Observer to invoke the notification on..

* @param {Function} onError Delegate to invoke for an OnError notification.

* @param {Function} onCompleted Delegate to invoke for an OnCompleted notification.

* @returns {Any} Result produced by the observation.

*/

accept<TResult>(onNext: (value: T) => TResult, onError?: (exception: any) => TResult, onCompleted?: () => TResult): TResult;

/**

* Returns an observable sequence with a single notification.

*

* @memberOf Notifications

* @param {Scheduler} [scheduler] Scheduler to send out the notification calls on.

* @returns {Observable} The observable sequence that surfaces the behavior of the notification upon subscription.

*/

toObservable(scheduler?: IScheduler): Observable<T>;

hasValue: boolean;

equals(other: Notification<T>): boolean;

kind: string;

value: T;

exception: any;

}

interface NotificationStatic {

new <T>(kind, value, exception, accept, acceptObservable, toString) : Notification<T>;

/**

* Creates an object that represents an OnNext notification to an observer.

* @param {Any} value The value contained in the notification.

* @returns {Notification} The OnNext notification containing the value.

*/

createOnNext<T>(value: T): Notification<T>;

/**

* Creates an object that represents an OnError notification to an observer.

* @param {Any} error The exception contained in the notification.

* @returns {Notification} The OnError notification containing the exception.

*/

createOnError<T>(exception: any): Notification<T>;

/**

* Creates an object that represents an OnCompleted notification to an observer.

* @returns {Notification} The OnCompleted notification.

*/

createOnCompleted<T>(): Notification<T>;

}

export var Notification : NotificationStatic;

export interface Observer<T> {

makeSafe(disposable: IDisposable): Observer<T>;

}

export module internals {

/**

* Abstract base class for implementations of the Observer class.

* This base class enforces the grammar of observers where OnError and OnCompleted are terminal messages.

*/

export interface AbstractObserver<T> extends Rx.IObserver<T>, Rx.IDisposable {

/**

* Notifies the observer of a new element in the sequence.

* @param {Any} value Next element in the sequence.

*/

onNext(value: T): void;

/**

* Notifies the observer that an exception has occurred.

* @param {Any} error The error that has occurred.

*/

onError(exception: any): void;

/**

* Notifies the observer of the end of the sequence.

*/

onCompleted(): void;

isStopped: boolean;

/**

* Disposes the observer, causing it to transition to the stopped state.

*/

dispose(): void;

fail(e: any): boolean;

// Must be implemented by other observers

next(value: T): void;

error(error: any): void;

completed(): void;

}

interface AbstractObserverStatic {

new <T>(): AbstractObserver<T>;

}

export var AbstractObserver: AbstractObserverStatic

}

/**

* Class to create an Observer instance from delegate-based implementations of the on* methods.

*/

export interface AnonymousObserver<T> extends Observer<T> {

/**

* Notifies the observer of a new element in the sequence.

* @param {Any} value Next element in the sequence.

*/

onNext(value: T): void;

/**

* Notifies the observer that an exception has occurred.

* @param {Any} error The error that has occurred.

*/

onError(exception: any): void;

/**

* Notifies the observer of the end of the sequence.

*/

onCompleted(): void;

}

interface AnonymousObserverStatic {

/**

* Creates an observer from the specified OnNext, OnError, and OnCompleted actions.

* @param {Any} onNext Observer's OnNext action implementation.

* @param {Any} onError Observer's OnError action implementation.

* @param {Any} onCompleted Observer's OnCompleted action implementation.

*/

new <T>(onNext?: (value: T) => void, onError?: (exception: any) => void, onCompleted?: () => void): AnonymousObserver<T>;

}

export var AnonymousObserver : AnonymousObserverStatic;

export interface CheckedObserver<T> extends Observer<T> {

checkAccess(): void;

}

export module internals {

export interface ScheduledObserver<T> extends Observer<T> {

ensureActive(): void;

}

}

export interface Observable<T> {

/**

* Wraps the source sequence in order to run its observer callbacks on the specified scheduler.

*

* This only invokes observer callbacks on a scheduler. In case the subscription and/or unsubscription actions have side-effects

* that require to be run on a scheduler, use subscribeOn.

*

* @param {Scheduler} scheduler Scheduler to notify observers on.

* @returns {Observable} The source sequence whose observations happen on the specified scheduler.

*/

observeOn(scheduler: IScheduler): Observable<T>;

}

export interface Observable<T> {

/**

* Wraps the source sequence in order to run its subscription and unsubscription logic on the specified scheduler. This operation is not commonly used;

* see the remarks section for more information on the distinction between subscribeOn and observeOn.

* This only performs the side-effects of subscription and unsubscription on the specified scheduler. In order to invoke observer

* callbacks on a scheduler, use observeOn.

* @param {Scheduler} scheduler Scheduler to perform subscription and unsubscription actions on.

* @returns {Observable} The source sequence whose subscriptions and unsubscriptions happen on the specified scheduler.

*/

subscribeOn(scheduler: IScheduler): Observable<T>;

}

export interface ObservableStatic {

/**

* Converts a Promise to an Observable sequence

* @param {Promise} An ES6 Compliant promise.

* @returns {Observable} An Observable sequence which wraps the existing promise success and failure.

*/

fromPromise<T>(promise: Promise<T>): Observable<T>;

}

export interface Observable<T> {

/*

* Converts an existing observable sequence to an ES6 Compatible Promise

* @example

* var promise = Rx.Observable.return(42).toPromise(RSVP.Promise);

*

* // With config

* Rx.config.Promise = RSVP.Promise;

* var promise = Rx.Observable.return(42).toPromise();

* @param {Function} [promiseCtor] The constructor of the promise. If not provided, it looks for it in Rx.config.Promise.

* @returns {Promise} An ES6 compatible promise with the last value from the observable sequence.

*/

toPromise(promiseCtor?: { new (resolver: (resolvePromise: (value: T) => void, rejectPromise: (reason: any) => void) => void): IPromise<T>; }): IPromise<T>;

/*

* Converts an existing observable sequence to an ES6 Compatible Promise

* @example

* var promise = Rx.Observable.return(42).toPromise(RSVP.Promise);

*

* // With config

* Rx.config.Promise = RSVP.Promise;

* var promise = Rx.Observable.return(42).toPromise();

* @param {Function} [promiseCtor] The constructor of the promise. If not provided, it looks for it in Rx.config.Promise.

* @returns {Promise} An ES6 compatible promise with the last value from the observable sequence.

*/

toPromise<TPromise extends IPromise<T>>(promiseCtor: { new (resolver: (resolvePromise: (value: T) => void, rejectPromise: (reason: any) => void) => void): TPromise; }): TPromise;

}

export interface Observable<T> {

/**

* Creates an array from an observable sequence.

* @returns {Observable} An observable sequence containing a single element with a list containing all the elements of the source sequence.

*/

toArray(): Observable<T[]>;

}

export interface ObservableStatic {

/**

* Creates an observable sequence from a specified subscribe method implementation.

* @example

* var res = Rx.Observable.create(function (observer) { return function () { } );

* var res = Rx.Observable.create(function (observer) { return Rx.Disposable.empty; } );

* var res = Rx.Observable.create(function (observer) { } );

* @param {Function} subscribe Implementation of the resulting observable sequence's subscribe method, returning a function that will be wrapped in a Disposable.

* @returns {Observable} The observable sequence with the specified implementation for the Subscribe method.

*/

create<T>(subscribe: (observer: Observer<T>) => IDisposable | Function | void): Observable<T>;

}

export interface ObservableStatic {

/**

* Returns an observable sequence that invokes the specified factory function whenever a new observer subscribes.

*

* @example

* var res = Rx.Observable.defer(function () { return Rx.Observable.fromArray([1,2,3]); });

* @param {Function} observableFactory Observable factory function to invoke for each observer that subscribes to the resulting sequence or Promise.

* @returns {Observable} An observable sequence whose observers trigger an invocation of the given observable factory function.

*/

defer<T>(observableFactory: () => ObservableOrPromise<T>): Observable<T>;

}

export interface ObservableStatic {

/**

* Returns an empty observable sequence, using the specified scheduler to send out the single OnCompleted message.

*

* @example

* var res = Rx.Observable.empty();

* var res = Rx.Observable.empty(Rx.Scheduler.timeout);

* @param {Scheduler} [scheduler] Scheduler to send the termination call on.

* @returns {Observable} An observable sequence with no elements.

*/

empty<T>(scheduler?: IScheduler): Observable<T>;

}

export interface ObservableStatic {

/**

* This method creates a new Observable sequence from an array-like or iterable object.

* @param {Any} arrayLike An array-like or iterable object to convert to an Observable sequence.

* @param {Function} [mapFn] Map function to call on every element of the array.

* @param {Any} [thisArg] The context to use calling the mapFn if provided.

* @param {Scheduler} [scheduler] Optional scheduler to use for scheduling. If not provided, defaults to Scheduler.currentThread.

*/

from<T>(array: ArrayOrIterable<T>): Observable<T>;

/**

* This method creates a new Observable sequence from an array-like or iterable object.

* @param {Any} arrayLike An array-like or iterable object to convert to an Observable sequence.

* @param {Function} [mapFn] Map function to call on every element of the array.

* @param {Any} [thisArg] The context to use calling the mapFn if provided.

* @param {Scheduler} [scheduler] Optional scheduler to use for scheduling. If not provided, defaults to Scheduler.currentThread.

*/

from<T, TResult>(array: ArrayOrIterable<T>, mapFn: (value: T, index: number) => TResult, thisArg?: any, scheduler?: IScheduler): Observable<TResult>;

}

export interface ObservableStatic {

/**

* Converts an array to an observable sequence, using an optional scheduler to enumerate the array.

* @deprecated use Observable.from or Observable.of

* @param {Scheduler} [scheduler] Scheduler to run the enumeration of the input sequence on.

* @returns {Observable} The observable sequence whose elements are pulled from the given enumerable sequence.

*/

fromArray<T>(array: ArrayLike<T>, scheduler?: IScheduler): Observable<T>;

}

export interface ObservableStatic {

/**

* Generates an observable sequence by running a state-driven loop producing the sequence's elements, using the specified scheduler to send out observer messages.

*

* @example

* var res = Rx.Observable.generate(0, function (x) { return x < 10; }, function (x) { return x + 1; }, function (x) { return x; });

* var res = Rx.Observable.generate(0, function (x) { return x < 10; }, function (x) { return x + 1; }, function (x) { return x; }, Rx.Scheduler.timeout);

* @param {Mixed} initialState Initial state.

* @param {Function} condition Condition to terminate generation (upon returning false).

* @param {Function} iterate Iteration step function.

* @param {Function} resultSelector Selector function for results produced in the sequence.

* @param {Scheduler} [scheduler] Scheduler on which to run the generator loop. If not provided, defaults to Scheduler.currentThread.

* @returns {Observable} The generated sequence.

*/

generate<TState, TResult>(initialState: TState, condition: (state: TState) => boolean, iterate: (state: TState) => TState, resultSelector: (state: TState) => TResult, scheduler?: IScheduler): Observable<TResult>;

}

export interface ObservableStatic {

/**

* This method creates a new Observable instance with a variable number of arguments, regardless of number or type of the arguments.

* @returns {Observable} The observable sequence whose elements are pulled from the given arguments.

*/

of<T>(...values: T[]): Observable<T>;

/**

* This method creates a new Observable instance with a variable number of arguments, regardless of number or type of the arguments.

* @param {Scheduler} scheduler A scheduler to use for scheduling the arguments.

* @returns {Observable} The observable sequence whose elements are pulled from the given arguments.

*/

ofWithScheduler<T>(scheduler?: IScheduler, ...values: T[]): Observable<T>;

}

export interface ArrayObserveChange<T> {

type: string;

object: T[];

name?: string;

oldValue?: T;

index?: number;

removed?: T[];

added?: number;

}

export interface ObservableStatic {

/**

* Creates an Observable sequence from changes to an array using Array.observe.

* @param {Array} array An array to observe changes.

* @returns {Observable} An observable sequence containing changes to an array from Array.observe.

*/

ofArrayChanges<T>(obj: T[]): Observable<ArrayObserveChange<T>>;

}

export interface ObjectObserveChange<T> {

type: string;

object: T;

name: string;

oldValue?: any;

}

export interface ObservableStatic {

/**

* Creates an Observable sequence from changes to an object using Object.observe.

* @param {Object} obj An object to observe changes.

* @returns {Observable} An observable sequence containing changes to an object from Object.observe.

*/

ofObjectChanges<T>(obj: T): Observable<ObjectObserveChange<T>>;

}

export interface ObservableStatic {

/**

* Returns a non-terminating observable sequence, which can be used to denote an infinite duration (e.g. when using reactive joins).

* @returns {Observable} An observable sequence whose observers will never get called.

*/

never<T>(): Observable<T>;

}

export interface ObservableStatic {

/**

* Convert an object into an observable sequence of [key, value] pairs.

* @param {Object} obj The object to inspect.

* @param {Scheduler} [scheduler] Scheduler to run the enumeration of the input sequence on.

* @returns {Observable} An observable sequence of [key, value] pairs from the object.

*/

pairs<T>(obj: { [key: string]: T }, scheduler?: IScheduler): Observable<[string, T]>;

/**

* Convert an object into an observable sequence of [key, value] pairs.

* @param {Object} obj The object to inspect.

* @param {Scheduler} [scheduler] Scheduler to run the enumeration of the input sequence on.

* @returns {Observable} An observable sequence of [key, value] pairs from the object.

*/

pairs<T>(obj: { [key: number]: T }, scheduler?: IScheduler): Observable<[number, T]>;

}

export interface ObservableStatic {

/**

* Generates an observable sequence of integral numbers within a specified range, using the specified scheduler to send out observer messages.

*

* @example

* var res = Rx.Observable.range(0, 10);