/**
 * Hook for LLM (Large Language Model) functionality
 */
/**
 * Options for useLLM hook
 */
export interface UseLLMOptions {
    /** Auto-initialize on mount */
    autoInit?: boolean;
    /** Model ID to load */
    model?: string;
    /** Default system prompt */
    systemPrompt?: string;
}
/**
 * Return type for useLLM hook
 */
export interface UseLLMReturn {
    /** Send a message and get response */
    chat: (text: string, options?: {
        systemPrompt?: string;
        onToken?: (token: string) => void;
    }) => Promise<string>;
    /** Initialize the adapter */
    initialize: (modelId?: string) => Promise<void>;
    /** Unload model to free memory */
    unload: () => Promise<void>;
    /** Current state (reactive) */
    readonly isReady: boolean;
    readonly isInitializing: boolean;
    readonly isGenerating: boolean;
    readonly currentModel: string | null;
    readonly error: Error | null;
    readonly downloadProgress: number;
}
/**
 * Hook for LLM chat
 *
 * @example
 * ```svelte
 * <script>
 *   import { useLLM } from '@happyvertical/smrt-svelte';
 *
 *   const llm = useLLM({ systemPrompt: 'You are a helpful assistant.' });
 *
 *   let input = $state('');
 *   let response = $state('');
 *
 *   async function handleSubmit() {
 *     response = '';
 *     response = await llm.chat(input, {
 *       onToken: (token) => { response += token; }
 *     });
 *   }
 * </script>
 *
 * {#if llm.isInitializing}
 *   <p>Loading model... {llm.downloadProgress}%</p>
 * {:else}
 *   <form onsubmit={handleSubmit}>
 *     <input bind:value={input} />
 *     <button disabled={llm.isGenerating}>Send</button>
 *   </form>
 *   <p>{response}</p>
 * {/if}
 * ```
 */
export declare function useLLM(options?: UseLLMOptions): UseLLMReturn;
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