import type { ModelInfo, ModelRef, RegistryLike } from "./types.js";
export declare const OPTIMIZER_CANDIDATES: string[];
export interface OptimizeResult {
    original: string;
    optimized: string;
    model?: ModelRef;
    errorMessage?: string;
}
export declare function optimizePrompt(args: {
    prompt: string;
    registry: ModelInfo[];
    model?: ModelRef;
    modelRegistry?: RegistryLike;
    signal: AbortSignal;
    fetchImpl?: typeof fetch;
    callModel?: (args: {
        model: ModelRef;
        prompt: string;
        systemPrompt: string;
        signal: AbortSignal;
    }) => Promise<{
        output: string;
    }>;
}): Promise<OptimizeResult>;
export declare function selectOptimizerModel(registry: ModelInfo[], preferred?: ModelRef): ModelRef | null;