import { Message } from "../contracts/conversation-message.type.mjs";
import { ModelCallOptions } from "../contracts/model.contract.mjs";

//#region ../ai/src/vcr/hash-request.d.ts
/**
 * Default `ModelCallOptions` fields folded into the request hash. These are
 * the inputs that materially change the model's output; everything else
 * (notably `signal` and unknown provider keys) is excluded so an otherwise
 * identical logical call still matches its recording.
 */
declare const DEFAULT_HASH_OPTIONS: readonly string[];
/**
 * Compute the stable VCR request hash for a model call.
 *
 * The hash covers the full `messages` array plus the picked, normalized
 * `options` subset (see {@link DEFAULT_HASH_OPTIONS}). Inputs are
 * canonicalized (recursive key sort) before serialization so property order
 * never affects the result. `signal` and unknown provider keys are excluded.
 *
 * @example
 * const a = hashRequest(messages, { temperature: 0.2 });
 * const b = hashRequest(messages, { temperature: 0.2, signal });
 * // a === b — signal is excluded.
 */
declare function hashRequest(messages: Message[], options?: ModelCallOptions, hashOptions?: readonly string[]): string;
//#endregion
export { DEFAULT_HASH_OPTIONS, hashRequest };
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