/**
 * Base interface and types for chat models
 */
import { z } from 'zod';
import { BaseMessage } from './messages';
import { ChatInvokeCompletion } from './views';
/**
 * Base interface for all chat models
 */
export interface BaseChatModel {
    _verified_api_keys?: boolean;
    model: string;
    readonly provider: string;
    readonly name: string;
    readonly model_name: string;
    /**
     * Invoke the chat model with messages
     */
    ainvoke<T = string>(messages: BaseMessage[], outputFormat?: z.ZodSchema<T>): Promise<ChatInvokeCompletion<T>>;
}
/**
 * Abstract base class for chat models
 */
export declare abstract class AbstractChatModel implements BaseChatModel {
    model: string;
    _verified_api_keys: boolean;
    constructor(model: string);
    abstract get provider(): string;
    get name(): string;
    get model_name(): string;
    abstract ainvoke<T = string>(messages: BaseMessage[], outputFormat?: z.ZodSchema<T>): Promise<ChatInvokeCompletion<T>>;
    protected parseStructuredOutput<T>(rawOutput: string, outputFormat?: z.ZodSchema<T>): T | string;
}
/**
 * Type guard to check if an object implements BaseChatModel
 */
export declare function isBaseChatModel(obj: any): obj is BaseChatModel;
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