/**
 * Project interfaces
 */
/**
 * Generic Dictionary
 */
export interface Dictionary<T> {
    [key: string]: T;
}
/**
 * Where `T` is the type of the complete interface you wish to expose
 */
export interface Remote<T> extends Dictionary<Function | Object> {
}
/**
 * Specify async types on the remote
 */
export interface RemoteDesc extends Dictionary<number | Dictionary<number>> {
}
/**
 * Async style function union
 */
export declare type RPCAsync<T> = RPCDefer<T> | RPCNodeCallback<T> | RPCNodeEventInternal | RPCNotify<T>;
/**
 * Ensures correct async response
 */
export interface RPCAsyncContainer<T> {
    type: number;
    async: RPCAsync<T> | Dictionary<RPCNodeEventInternal>;
}
export interface RPCNodeEventInternal {
    listener: Function;
    uid: string;
}
export declare type RPCAsyncContainerDictionary = Dictionary<RPCAsyncContainer<any>>;
export interface RPCNodeCallback<T> {
    (error: Error, param?: T): any;
    (error: Error, ...rest: any[]): any;
}
/**
 * tl;dr these are used in `RemoteDesc` to describe given API functions
 *
 * js-rpc uses these strings to identify types of "real world" functions that
 * it can interface with.
 *
 * These types are actually used by consumers of the library since they are the
 * specific strings enforced by `RemoteDesc`
 *
 * - ### "nodeCallback"
 * nodeCallback refers to JavaScript callback functions that strictly follow
 * two rules:
 *
 *     - the _last_ parameter passed to a function is the callback
 *     - a "Nullable Error" is the _first_ parameter passed to the callback
 *
 *     Example:
 *
 *     ```js
 *     function add(a, b, callback) {
 *       setTimeout(() => {
 *         if (isNumber(a) && (isNumber(b)) {
 *           callback(null, result);
 *         } else {
 *           callback(new TypeError('add is for numbers'));
 *         }
 *       }, 0);
 *     }
 *
 *     add(1, 2, (err, result) => expect(result).toBe(3);
 *     add(1, 2, (err, result) => expect(error).toBeFalsey();
 *     add('1', 2), (erro, result) => expect(error instanceof Error).toBe(true);
 *     ```
 *
 * - ### "nodeEvent"/"nodeEventInternal"
 * nodeEvents are a _limited_ interface to *
 * [node EventEmitters](https://nodejs.org/api/events.html "docs")
 *
 * - ### "observable"
 * In this case observables refer to
 * [RxJS5](https://github.com/ReactiveX/rxjs, "RxJS")
 *
 * - ### "promise"
 * promises are es6 promises or any A+ promises that implement `.then` and
 * `.catch` along with the global `Promise`
 */
export declare const RPCAsyncType: {
    observable: number;
    promise: number;
};
export interface RPCDefer<T> {
    resolve: (any: any) => any;
    reject: (any: any) => any;
    promise: Promise<T>;
}
/**
 * The Different Types of RPC Events
 */
export declare const RPCEventType: Readonly<{
    ack: number;
    create: number;
    createReturn: number;
    destroy: number;
    destroyReturn: number;
    fnReturn: number;
    invoke: number;
    promise: number;
    subscribe: number;
    unsubscribe: number;
}>;
export interface RPCEmit {
    (message: string, payload: RPCEvent): any;
}
export interface ConfiguredRPCEmit {
    (payload: RPCEvent): any;
}
export interface RPCNotify<T> {
    (param: T, ...args: any[]): any;
    (...args: any[]): any;
}
export interface RPCObservable<T> {
    subscribe: (next: (param: T) => any, onError: (error: Error) => any, onComplete: () => any) => () => void;
}
export interface RPCOn {
    (message: string, callback: (payload: RPCEvent) => void): () => void;
}
export interface ConfiguredRPCOn {
    (callback: (payload: RPCEvent) => any): () => any;
}
export interface RPCOptions {
    defaultAsyncType?: number;
    defaultCreateRetry?: number;
    defaultCreateRetryCurve?: number;
    defaultCreateWait?: number;
    enableStackTrace?: boolean;
    maxAckDelay?: number;
    useAcks?: Dictionary<number>;
}
export interface FunctionalState {
    responders: RPCEventRegistry;
    successHandlers: RPCEventRegistry;
    errorHandlers: RPCEventRegistry;
}
export interface RPCAbstractConfig extends RPCOptions {
    message?: string;
    remote?: Object;
    emit?: ConfiguredRPCEmit;
    on?: ConfiguredRPCOn;
    functionalState?: FunctionalState;
    callbacks?: RPCAsyncContainerDictionary;
    uid?: () => string;
}
export interface RPCConfig extends RPCAbstractConfig {
    emit: ConfiguredRPCEmit;
    on: ConfiguredRPCOn;
}
export declare type RPCEventRegistry = {
    [key: number]: (...args: any[]) => any;
};
export declare type RPCAsyncRegistry = {
    [key: number]: (...args: any[]) => any;
};
export declare type RPCRegister = (key: number, value: (...args: any[]) => any) => void;
/**
 * JavaScript error with a code number
 */
export interface CodedError extends Error {
    code?: number;
    stack?: string;
}
/**
 * Serializable Error
 */
export interface RPCError {
    code?: number;
    message: string;
    stack?: string;
    type?: string;
}
export interface RPCInvocationPayload {
    fn: string;
    args: any[];
}
export interface RPCErrorPayload {
    error: RPCError;
}
export interface RPCReturnPayload {
    result: any[];
}
export declare type RPCPayload = RPCInvocationPayload | RPCReturnPayload | RPCErrorPayload;
export interface RPCEvent {
    type: number;
    payload: RPCPayload;
    uid: string;
    useAcks?: boolean;
}
export interface RPC<T> {
    config: RPCConfig;
    destroy: (reason?: string) => Promise<void>;
    onDestroy: (callback: (reason?: string) => any) => () => void;
    ready: Promise<void>;
    remote: T;
}