import { ZodSchema } from 'zod';
import { CoreTool, LanguageModelV1 } from 'ai';
import { StreamResult, ModelConfig } from './types';
/**
 * Base class for creating AI agents with standardized input/output handling,
 * tool management, and model integration.
 *
 * @typeParam TInput - The type of input the agent accepts
 * @typeParam TOutput - The type of output the agent produces
 */
export declare abstract class Agent<TInput = any, TOutput = any> {
    private telemetry;
    constructor();
    /**
     * Retrieves metadata from a decorator.
     *
     * @param key - The metadata key symbol
     * @param target - The target object to get metadata from
     * @param defaultValue - The default value to return if metadata is not found
     * @returns The metadata value or default empty array
     */
    private static getMetadata;
    /**
     * Gets the configured language model for this agent.
     *
     * @returns Promise resolving to the language model instance
     * @throws {Error} If model metadata is not found
     */
    protected getModel(): Promise<LanguageModelV1>;
    /**
     * Gets the model config configured through the @model decorator.
     *
     * @returns The model config
     */
    protected getModelConfig(): ModelConfig;
    /**
     * Gets the tools configured for this agent through the @tool decorator.
     *
     * @returns A record of tool names to their implementations
     */
    protected getTools(): Record<string, CoreTool>;
    /**
     * Gets the system prompts configured through the @systemPrompt decorator.
     *
     * @returns An array of functions that generate system prompt strings
     */
    protected getSystemPrompts(): Array<() => Promise<string>>;
    /**
     * Gets the output schema configured through the @output decorator.
     *
     * @returns The Zod schema for validating agent outputs, fallbacks to string schema if not configured
     */
    protected getOutputSchema(): ZodSchema<any>;
    /**
     * Gets the input schema configured through the @input decorator.
     *
     * @returns The Zod schema for validating agent inputs, if configured
     */
    protected getInputSchema(): ZodSchema<any> | undefined;
    /**
     * Serializes the input into a string format for the language model.
     *
     * @param input - The input to serialize
     * @param inputSchema - Optional schema to validate the input
     * @returns The serialized input string
     * @throws {Error} If serialization or validation fails
     */
    protected serializeInput(input: TInput, inputSchema: ZodSchema<TInput> | undefined): string;
    /**
     * Creates the base configuration for both run and stream operations.
     *
     * @param input - The input to process
     * @returns Base configuration object with model, tools, schemas, and messages
     */
    private createConfig;
    /**
     * Wraps an async operation with error handling and telemetry.
     *
     * @param operation - The async operation to execute
     * @returns The result of the operation
     * @throws The caught error after recording it in telemetry
     */
    private withErrorHandling;
    /**
     * Adds telemetry attributes for monitoring and debugging purposes.
     * Records information about the model, tools, and schemas being used.
     *
     * @param model - The language model being used
     * @param tools - The tools available to the agent
     * @param outputSchema - The schema for validating outputs
     * @param inputSchema - The schema for validating inputs, if any
     */
    private addTelemetry;
    /**
     * Creates a processed stream that automatically handles the output type.
     * For string schemas, returns the text stream directly.
     * For other types, returns the experimental partial output stream.
     *
     * @param stream - The raw stream result from the model
     * @param schema - The schema defining the output type
     * @returns An async iterable of processed chunks matching the output type
     */
    private processStream;
    /**
     * Processes the output from generateText based on the schema type.
     *
     * @param result - The result from generateText
     * @param schema - The output schema
     * @returns Processed output matching the schema type
     */
    private processOutput;
    /**
     * Runs the agent with the given input and returns the output.
     *
     * @example
     * ```typescript
     * // Simple text input/output
     * const agent = new SimpleAgent();
     * const response = await agent.run("What is TypeScript?");
     * console.log(response); // "TypeScript is a typed superset of JavaScript..."
     *
     * // Structured input/output
     * const greetingAgent = new GreetingAgent();
     * const response = await greetingAgent.run({
     *   userName: "Alice",
     *   userMood: "happy",
     *   dayOfWeek: "Saturday"
     * });
     * console.log(response); // { greeting: "Hello Alice!", moodResponse: "..." }
     * ```
     *
     * @param input - The input (user prompt) to process
     * @returns Promise resolving to the processed output
     * @throws {Error} If input validation fails or processing errors occur
     */
    run(input: TInput): Promise<TOutput>;
    /**
     * Streams the agent's response for the given input. Useful for real-time UI updates
     * or processing long responses chunk by chunk.
     *
     * @example
     * ```typescript
     * // Simple text streaming
     * const agent = new SimpleAgent();
     * const { stream } = await agent.stream("What is TypeScript?");
     * for await (const chunk of stream) {
     *   process.stdout.write(chunk); // Chunks: "Type" ... "Script" ... "is a" ...
     * }
     *
     * // Structured output streaming
     * const greetingAgent = new GreetingAgent();
     * const { stream } = await greetingAgent.stream({
     *   userName: "Alice",
     *   userMood: "happy"
     * });
     * for await (const chunk of stream) {
     *   console.log(chunk); // Partial objects that build up the complete response
     * }
     * ```
     *
     * @param input - The input (user prompt) to process
     * @returns Promise resolving to an enhanced stream result containing the output stream
     * @throws {Error} If input validation fails or processing errors occur
     */
    stream(input: TInput): Promise<StreamResult<TOutput>>;
}
/**
 * `model` decorator to associate a model identifier and configuration with an agent.
 *
 * @param modelIdentifier - The model identifier string (e.g., 'openai:gpt-4-mini')
 * @param config - Optional configuration for the model
 * @param config.maxTokens - Maximum number of tokens to generate
 * @param config.temperature - Sampling temperature between 0 and 1 (use either temperature or topP, not both)
 * @param config.maxRetries - Maximum number of retries for failed requests (defaults to 2 in SDK)
 * @param config.maxSteps - Maximum number of steps for tool calling (defaults to 3)
 * @param config.toolChoice - Tool choice mode - 'auto' or 'none'
 * @returns A class decorator function
 *
 * @example
 * ```typescript
 * // Basic usage
 * @model('openai:gpt-4-mini')
 * class MyAgent extends Agent<string, string> {}
 *
 * // With configuration
 * @model('openai:gpt-4-mini', {
 *   maxTokens: 100,    // limit response length
 *   temperature: 0.7,  // control randomness
 *   maxRetries: 3,     // retry failed requests
 *   maxSteps: 5,       // allow multi-step tool calling
 *   toolChoice: 'auto' // enable automatic tool selection
 * })
 * class MyConfiguredAgent extends Agent<string, string> {}
 * ```
 */