/**
 * JSONL parser for watch command
 *
 * Extracts session information from Claude Code JSONL files.
 */
/**
 * Extract sessionId from a JSONL file
 *
 * Uses regex for fast extraction without full JSON parsing.
 * Returns the first valid sessionId found in the file.
 *
 * @param args - Configuration arguments
 * @param args.filePath - Path to the JSONL file
 *
 * @returns The sessionId if found, null otherwise
 */
export declare const extractSessionId: (args: {
    filePath: string;
}) => Promise<string | null>;
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