import * as child_process from 'child_process';
export interface PackageInfo {
    name: string;
    version: string;
    installPath: string;
    process?: child_process.ChildProcess;
}
export interface FunctionExecutionResult {
    success: boolean;
    result?: any;
    error?: string;
}
export declare class PackageManager {
    private packageCache;
    private cacheDir;
    constructor(cacheDir?: string);
    /**
     * Gets the cache key for a package name and version
     */
    private getCacheKey;
    /**
     * Gets the installation directory for a package
     */
    private getPackageDir;
    /**
     * Checks if a package is already cached
     */
    isPackageCached(serviceName: string, serviceVersion: string): Promise<boolean>;
    /**
     * Downloads and installs a package to the cache
     */
    downloadPackage(serviceName: string, serviceVersion: string): Promise<string>;
    /**
     * Creates a worker script for executing functions in the package
     */
    private createWorkerScript;
    /**
     * Starts a worker process for a package
     */
    startWorker(serviceName: string, serviceVersion: string): Promise<child_process.ChildProcess>;
    /**
     * Sends a message to a worker process and waits for response
     */
    private sendWorkerMessage;
    /**
     * Gets a package, downloading it if necessary and starting worker if needed
     */
    getPackage(serviceName: string, serviceVersion: string): Promise<PackageInfo>;
    /**
     * Lists functions available in a package
     */
    listFunctions(serviceName: string, serviceVersion: string): Promise<Record<string, any>>;
    /**
     * Executes a function in a package
     */
    executeFunction(serviceName: string, serviceVersion: string, functionName: string, encodedArgs: `0x${string}`, isConsensus?: boolean, consensusArgs?: any): Promise<any>;
    /**
     * Cleans up resources for a package
     */
    cleanup(serviceName: string, serviceVersion: string): Promise<void>;
    /**
     * Clears all package cache and kills all worker processes
     */
    clearCache(): Promise<void>;
    /**
     * Gets cache statistics
     */
    getCacheStats(): {
        cachedPackages: number;
        activeWorkers: number;
    };
}
export declare const packageManager: PackageManager;