/**
 * postgres-mcp - Worker Sandbox (worker_threads)
 *
 * Production-grade sandboxed execution using `node:worker_threads`.
 * Provides true V8 isolate boundary with resource limits,
 * hard timeouts, and MessagePort RPC bridge.
 */
import { type SandboxOptions, type PoolOptions, type SandboxResult } from "./types.js";
/**
 * Worker-thread sandbox for secure code execution.
 * Each execution spawns a fresh worker for clean state.
 */
export declare class WorkerSandbox {
    private readonly options;
    constructor(options?: SandboxOptions);
    /**
     * Execute code in a worker thread with RPC bridge.
     *
     * @param code - JavaScript code to execute
     * @param apiBindings - Map of group → method record for RPC dispatch
     */
    execute(code: string, apiBindings: Record<string, unknown>, timeoutMs?: number): Promise<SandboxResult>;
}
/**
 * Pool of worker-thread sandboxes for concurrent execution.
 * Creates a fresh worker for every execution to guarantee clean state.
 */
export declare class WorkerSandboxPool {
    private readonly options;
    private readonly sandboxOptions;
    private activeCount;
    constructor(sandboxOptions?: SandboxOptions, poolOptions?: PoolOptions);
    /**
     * Execute code in a pooled worker sandbox.
     */
    execute(code: string, apiBindings: Record<string, unknown>, timeoutMs?: number): Promise<SandboxResult>;
    /** Get the current active execution count */
    getActiveCount(): number;
    /** Unique pool identifier */
    readonly poolId: `${string}-${string}-${string}-${string}-${string}`;
}
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