import type { CompletionRequest } from '../types/messages.js';
import type { NexusResponse } from '../types/response.js';
import type { ResponseFormatConfig } from '../types/config.js';
/** Raised when a response does not match the requested format and cannot be repaired. */
export declare class ResponseFormatError extends Error {
    constructor(message: string);
}
/**
 * Checks a response against the requested format. A zod shape is checked through its own
 * `safeParse`, so it needs nothing installed beyond the zod that built it; a JSON Schema loads `ajv`
 * and `ajv-formats` on first use.
 */
export declare function applyResponseFormat(response: NexusResponse, config?: ResponseFormatConfig): Promise<NexusResponse>;
export declare function withResponseFormat(request: CompletionRequest, config?: ResponseFormatConfig): CompletionRequest;