import type { ExecutionBudget, SandboxHostFunction } from '../types.js';
import type { QuickJSContext } from 'quickjs-emscripten-core';
/**
 * Optional adapter for `runInSandbox`'s `setupContext`: exposes named host functions to the
 * guest as one frozen global — `hostFunctions` by default, or the `globalName` the consumer
 * chooses. Values cross the boundary as JSON strings — the guest only ever receives copies.
 * Returns the cleanup callback.
 */
export declare function setupHostFunctions(context: QuickJSContext, hostFunctions: Record<string, SandboxHostFunction>, options?: {
    globalName?: string;
    budget?: ExecutionBudget;
    maxCalls?: number;
    maxOutputBytes?: number;
    messages?: {
        outputTooLarge?: (bytes: number) => string;
        callLimitExceeded?: (max: number) => string;
    };
}): () => void;
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