import type { LanguageModelV3Middleware, LanguageModelV3Prompt } from '@ai-sdk/provider';
import type { TSmartAiProviderOptions } from './smartai.interfaces.js';
export type TSmartAiMessageCacheProvider = 'anthropic' | 'openrouter' | 'bedrock' | 'openaiCompatible' | 'copilot' | 'alibaba';
export type TSmartAiCacheRetention = 'ephemeral' | '1h' | 'in_memory' | '24h';
export interface ISmartAiCacheOptions {
    /** Provider-specific message cache marker namespace. Usually inferred from the model. */
    provider?: TSmartAiMessageCacheProvider;
    /** Stable session/request key for providers that support request-level prompt cache affinity. */
    key?: string;
    /** Short retention is the default; longer retention is opt-in. */
    retention?: TSmartAiCacheRetention;
}
export type TSmartAiCacheSetting = boolean | 'auto' | ISmartAiCacheOptions;
export declare function mergeSmartAiProviderOptions(defaults?: TSmartAiProviderOptions, overrides?: TSmartAiProviderOptions): TSmartAiProviderOptions | undefined;
export declare function resolveSmartAiCacheProvider(provider?: string, modelId?: string): TSmartAiMessageCacheProvider | undefined;
export declare function getSmartAiMessageCacheProviderOptions(provider: TSmartAiMessageCacheProvider, options?: ISmartAiCacheOptions): TSmartAiProviderOptions;
export declare function applySmartAiPromptCaching(prompt: LanguageModelV3Prompt, options?: ISmartAiCacheOptions): LanguageModelV3Prompt;
export declare function createSmartAiCachingMiddleware(options?: ISmartAiCacheOptions): LanguageModelV3Middleware;
export declare function getSmartAiCacheProviderOptions(input: {
    provider?: string;
    modelId?: string;
    cache?: TSmartAiCacheSetting;
    sessionId?: string;
}): TSmartAiProviderOptions | undefined;
export declare function applySmartAiCacheProviderOptions(input: {
    provider?: string;
    modelId?: string;
    providerOptions?: TSmartAiProviderOptions;
    cache?: TSmartAiCacheSetting;
    sessionId?: string;
}): TSmartAiProviderOptions | undefined;