import { type AgentMessage } from './types/agent-message.js';
/**
 * Normalize history for LLM providers / AI SDK:
 * - Drop toolResult rows with no matching assistant tool_call.
 * - Inject placeholder toolResult rows for assistant tool_calls missing results.
 *
 * Prevents errors such as:
 * - "Messages with role 'tool' must be a response to a preceding message with 'tool_calls'"
 * - AI_MissingToolResultsError
 */
export declare function repairAgentMessagesForLlm(messages: AgentMessage[]): AgentMessage[];
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