/**
 * Null implementation of conversation management.
 *
 * This module provides a no-op conversation manager that does not modify
 * the conversation history. Useful for testing and scenarios where conversation
 * management is handled externally.
 */
import { ConversationManager, type ConversationManagerReduceOptions } from './conversation-manager.js';
/**
 * A no-op conversation manager that does not modify the conversation history.
 *
 * Does not register any proactive hooks. Overflow errors will not be retried
 * since `reduce` always returns `false`.
 */
export declare class NullConversationManager extends ConversationManager {
    /**
     * Unique identifier for this conversation manager.
     */
    readonly name = "strands:null-conversation-manager";
    /**
     * No-op reduction — never modifies the conversation history.
     *
     * @returns `false` always
     */
    reduce(_args: ConversationManagerReduceOptions): boolean;
}
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