/**
 * The JSON Claude Code writes to a hook command's stdin. Only `transcript_path`
 * is read, and like every field of these internal, unversioned payloads it may be
 * absent: a hook that cannot read its input must do nothing, never fail.
 * See docs/DATA_SOURCES.md §2.12.
 *
 * Plain parsing rather than zod, unlike `statusline.ts`: this runs on every
 * prompt, and importing zod alone costs about 30ms of a ~60ms budget.
 */
/** The session's transcript path, or undefined for anything unreadable. Never throws. */
export declare function parseHookTranscriptPath(raw: string): string | undefined;