import { ExecutionLimits, SandboxExecutionResult } from './types.js';
/**
 * Memory used by a QuickJS runtime, in megabytes.
 * Prefers a numeric reading. The text dump is the fallback, and a format
 * change or a missing API reports 0 rather than failing the script.
 */
export declare function memoryUsedMb(runtime: {
    computeMemoryUsage?: () => unknown;
    dumpMemoryUsage?: () => string;
}): number;
/**
 * Evaluates JavaScript guest code inside an isolated QuickJS WebAssembly sandbox.
 * Supports async callTool bridging across IPC/host dispatcher, microtask pumping,
 * console capturing, circuit breaker enforcement, and 2-tier timeout protection.
 */
export declare function evaluateGuestScript(code: string, limits: ExecutionLimits, ipcToolDispatcher: (name: string, args: Record<string, unknown>) => Promise<unknown>): Promise<SandboxExecutionResult>;
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