/**
 * Message processing helpers extracted from claude.ts.
 *
 * Pure (or near-pure) functions used by processOutput() to handle
 * different Claude stdout message types. No module-level state access.
 */
import type { ClaudeMessage, ConversationState, SendFn } from './claude.js';
/** Build a control_response JSON payload for writing to Claude's stdin. */
export declare function buildControlResponse(requestId: string, updatedInput: Record<string, unknown>): Record<string, unknown>;
/**
 * Handle a 'result' message from Claude: send errors and turn_completed.
 * Returns true so the caller can `continue`.
 */
export declare function handleResultMessage(msg: ClaudeMessage, state: ConversationState, sendWithConvId: SendFn): void;
/**
 * Handle an 'assistant' message: compute text delta and forward tool_use blocks.
 * Returns the updated lastSentText for delta tracking.
 */
export declare function handleAssistantMessage(msg: ClaudeMessage, lastSentText: string, sendWithConvId: SendFn): string;
/**
 * Check if a user message is a task-notification (background task completed/failed).
 * These are system-injected and should not trigger visible output in the web UI.
 */
export declare function isTaskNotification(msg: ClaudeMessage): boolean;
/**
 * Handle a 'user' (tool_result) message: detect command output or forward as-is.
 * Returns true if a command output was extracted (caller should `continue`).
 */
export declare function handleUserMessage(msg: ClaudeMessage, sendWithConvId: SendFn): boolean;