import type { ZodType, ZodTypeDef } from "zod";
import { type Schema, type LanguageModelV1 } from "ai";
import type { AIProviderName } from "../core/types.js";
import type { StreamOptions, StreamResult } from "../types/streamTypes.js";
import { BaseProvider } from "../core/baseProvider.js";
/**
 * HuggingFace Provider - BaseProvider Implementation
 * Using AI SDK with HuggingFace's OpenAI-compatible endpoint
 */
export declare class HuggingFaceProvider extends BaseProvider {
    private model;
    constructor(modelName?: string);
    /**
     * HuggingFace models currently don't properly support tool/function calling
     *
     * **Tested Models & Issues:**
     * - microsoft/DialoGPT-medium: Describes tools instead of executing them
     * - Most HF models via router endpoint: Function schema passed but not executed
     * - Issue: Models treat tool definitions as conversation context rather than executable functions
     *
     * **Known Limitations:**
     * - Tools are visible to model but treated as descriptive text
     * - No proper function call response format handling
     * - HuggingFace router endpoint doesn't enforce OpenAI-compatible tool execution
     *
     * @returns false to disable tools by default until proper implementation
     */
    supportsTools(): boolean;
    protected executeStream(options: StreamOptions, analysisSchema?: ZodType<unknown, ZodTypeDef, unknown> | Schema<unknown>): Promise<StreamResult>;
    protected getProviderName(): AIProviderName;
    protected getDefaultModel(): string;
    /**
     * Returns the Vercel AI SDK model instance for HuggingFace
     */
    protected getAISDKModel(): LanguageModelV1;
    protected handleProviderError(error: unknown): Error;
    private validateStreamOptions;
}
export default HuggingFaceProvider;