import { type ToolSet } from 'ai';
import type { ModelTurnLoop, ModelTurnLoopInput, ModelTurnLoopState } from './ModelTurnLoop.js';
/** Sorted tool names for stable provider prompt-cache hashing. */
export declare function deriveToolOrder(tools: ToolSet | undefined): readonly string[] | undefined;
/** Built-in AI SDK implementation of the inner model/tool loop. */
export declare class AiSdkModelTurnLoop implements ModelTurnLoop {
    run(input: ModelTurnLoopInput, state: ModelTurnLoopState, emitToken: (delta: string) => void): Promise<void>;
    /** One final, tool-less call so a turn that exhausted its step budget still answers. */
    private wrapUp;
}