import { StreamIncompleteError } from '../../utils/errors.js';
import type { SubagentToolResult } from './result.js';
export declare function buildEmptyBufferError(subagentId: string, toolResults: SubagentToolResult[]): StreamIncompleteError;
export declare function synthesizeEmptyBufferPartial(subagentId: string, toolResults: SubagentToolResult[]): string | undefined;