import { Observable } from 'rxjs';
import { ExtensionBroker } from './extension-broker';
import { WorkerExtensionInstance } from './model/extension-instance';
export declare type WorkerVersionArgumentMapper = (method: string, version: number, args: any) => any[];
export interface WorkerResult<T> {
    returnValue?: T;
    error?: any;
    worker: WorkerExtensionInstance;
}
/**
 * Defines an abstraction for working with a set of workers given a designated extension target
 */
export declare class WorkerSet {
    private extensionBroker;
    private extensionTarget;
    private mapArguments?;
    /**
     * The source name to use when logging about this service
     */
    private get logSourceName();
    /**
     * Observable to track the creation of our workers
     */
    private workers;
    /**
     * Determine if workers were initialized successfully
     */
    private workersInitializedSubject;
    readonly workersInitialized: Observable<boolean>;
    get isWorkersInitialized(): boolean;
    /**
     * instantiates a new instance of the AzureCenterService service
     * @param extensionBroker the extension broker instance
     * @param extensionTarget the extension target id we want to get workers for
     * @param mapArguments a function that maps different versions of worker arguments
     * based on the the versions implemented by a worker @optional @deprecated
     */
    constructor(extensionBroker: ExtensionBroker, extensionTarget: string, mapArguments?: WorkerVersionArgumentMapper);
    /**
     * Initializes the workers
     */
    initializeWorkers(): void;
    /**
     * Destroys the workers
     */
    destroyWorkers(): void;
    /**
     * Calls a method on each worker in and emits when all workers to respond
     */
    all<T>(method: string, ...args: any[]): Observable<WorkerResult<T>[]>;
    /**
     * Calls a method on each worker in and emits when each worker responds
     */
    each<T>(method: string, ...args: any[]): Observable<WorkerResult<T>>;
    /**
     * Calls a function on the applicable workers
     */
    private prepareCalls;
}