1 | /**
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2 | * @license
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3 | * Copyright 2017 Google LLC
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4 | *
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5 | * Licensed under the Apache License, Version 2.0 (the "License");
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6 | * you may not use this file except in compliance with the License.
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7 | * You may obtain a copy of the License at
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8 | *
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9 | * http://www.apache.org/licenses/LICENSE-2.0
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10 | *
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11 | * Unless required by applicable law or agreed to in writing, software
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12 | * distributed under the License is distributed on an "AS IS" BASIS,
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13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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14 | * See the License for the specific language governing permissions and
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15 | * limitations under the License.
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16 | */
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17 | export declare type NextFn<T> = (value: T) => void;
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18 | export declare type ErrorFn = (error: Error) => void;
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19 | export declare type CompleteFn = () => void;
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20 | export interface Observer<T> {
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21 | next: NextFn<T>;
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22 | error: ErrorFn;
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23 | complete: CompleteFn;
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24 | }
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25 | export declare type PartialObserver<T> = Partial<Observer<T>>;
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26 | export declare type Unsubscribe = () => void;
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27 | /**
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28 | * The Subscribe interface has two forms - passing the inline function
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29 | * callbacks, or a object interface with callback properties.
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30 | */
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31 | export interface Subscribe<T> {
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32 | (next?: NextFn<T>, error?: ErrorFn, complete?: CompleteFn): Unsubscribe;
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33 | (observer: PartialObserver<T>): Unsubscribe;
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34 | }
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35 | export interface Observable<T> {
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36 | subscribe: Subscribe<T>;
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37 | }
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38 | export declare type Executor<T> = (observer: Observer<T>) => void;
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39 | /**
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40 | * Helper to make a Subscribe function (just like Promise helps make a
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41 | * Thenable).
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42 | *
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43 | * @param executor Function which can make calls to a single Observer
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44 | * as a proxy.
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45 | * @param onNoObservers Callback when count of Observers goes to zero.
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46 | */
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47 | export declare function createSubscribe<T>(executor: Executor<T>, onNoObservers?: Executor<T>): Subscribe<T>;
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48 | /** Turn synchronous function into one called asynchronously. */
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49 | export declare function async(fn: Function, onError?: ErrorFn): Function;
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