/** Whether the model answered at all: any `assistant` event, subagents included. */
export declare function reachedModel(streamJson: string): boolean;
/**
 * The main agent's replies, one per message that ended a turn. A message
 * streamed as several events (one per content block) is joined under its
 * `message.id`. Left out: a subagent's messages (a non-null
 * `parent_tool_use_id`); a message that also calls a tool, whose text is
 * narration on the way to the call (measured on Claude Code 2.1.292: the
 * narration and the `tool_use` share one id); a message with no text.
 * `undefined` when the output is not a stream, so a check can say the run
 * was not streamed instead of reading "no replies".
 */
export declare function parseReplies(streamJson: string): readonly string[] | undefined;
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