import { ModelMessage, SystemPrompt } from '@tanstack/ai';
import { Message, SystemContentBlock } from '@aws-sdk/client-bedrock-runtime';
/**
 * Convert TanStack AI messages + system prompts into the Converse API format.
 *
 * - System prompts are lifted into `SystemContentBlock[]`.
 * - `tool` role messages are remapped to `user` role `toolResult` blocks.
 * - Consecutive messages with the same Converse role are merged (Converse
 *   requires strict user/assistant alternation).
 */
export declare function toConverseMessages(messages: Array<ModelMessage>, systemPrompts?: Array<SystemPrompt>): {
    system: Array<SystemContentBlock>;
    messages: Array<Message>;
};