/**
 * JS/TS REPL Tool (GAP-TOOLS-007).
 *
 * Provides sandboxed JavaScript expression evaluation using Node's
 * built-in `vm` module. Designed for safe, isolated evaluation of
 * expressions within agent workflows.
 */
import { type Context } from 'node:vm';
export interface ReplResult {
    output: string;
    error?: string;
    durationMs: number;
}
/**
 * Evaluate a JavaScript expression in a sandboxed context.
 * Returns the result as a string, or captures the error.
 */
export declare function evaluateExpression(code: string, timeoutMs?: number, sandbox?: Context): ReplResult;
/**
 * Format a REPL result for display.
 */
export declare function formatReplResult(result: ReplResult): string;
/**
 * Create a reusable sandbox context with optional global bindings.
 * The sandbox provides basic JavaScript builtins but no Node.js APIs
 * (no require, no process, no filesystem access).
 */
export declare function createReplSandbox(globals?: Record<string, unknown>): Context;
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