/**
 * LLM Client Factory
 *
 * Factory function for creating LLM client instances with auto-detection and validation.
 */
import { LLMClient, LLMClientConfig } from './client';
import { LLMProvider } from './config';
/**
 * Extended configuration for creating an LLM client
 */
export interface CreateLLMClientConfig extends LLMClientConfig {
    /** Provider type (auto-detected from model if not specified) */
    provider?: LLMProvider;
    /** Model to use (required for auto-detection) */
    model?: string;
}
/**
 * Create an LLM client instance
 *
 * This factory function creates the appropriate LLM client based on the configuration.
 * It supports auto-detection of providers from model names and automatic loading of
 * API keys from environment variables.
 *
 * @example
 * ```typescript
 * // Auto-detect provider from model name
 * const client = createLLMClient({
 *   model: 'gpt-4-turbo',
 *   apiKey: process.env.OPENAI_API_KEY!,
 * });
 *
 * // Explicit provider
 * const client = createLLMClient({
 *   provider: 'anthropic',
 *   model: 'claude-3-opus-20240229',
 *   apiKey: process.env.ANTHROPIC_API_KEY!,
 * });
 *
 * // Use environment variables for API key
 * const client = createLLMClient({
 *   model: 'gpt-4-turbo',
 *   // API key loaded from OPENAI_API_KEY env var
 * });
 * ```
 *
 * @param config - Client configuration
 * @returns LLM client instance
 * @throws LLMInvalidRequestError if configuration is invalid
 * @throws LLMAuthenticationError if API key is missing
 * @throws Error if provider is not supported
 */
export declare function createLLMClient(config: CreateLLMClientConfig): LLMClient;
/**
 * Create an LLM client with simplified configuration
 *
 * Convenience function that only requires a model name and API key.
 * The provider is automatically detected from the model name.
 *
 * @example
 * ```typescript
 * const client = createSimpleLLMClient('gpt-4-turbo', process.env.OPENAI_API_KEY!);
 * const client = createSimpleLLMClient('claude-3-opus-20240229'); // Uses env var
 * ```
 *
 * @param model - Model identifier
 * @param apiKey - Optional API key (loaded from env if not provided)
 * @returns LLM client instance
 */
export declare function createSimpleLLMClient(model: string, apiKey?: string): LLMClient;
/**
 * Type guard to check if a client configuration is valid
 *
 * @param config - Configuration to check
 * @returns True if configuration is valid
 */
export declare function isValidLLMConfig(config: Partial<CreateLLMClientConfig>): config is CreateLLMClientConfig;
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