Function useTabStatus

src/ink/hooks/use-tab-status.ts:53–72

(kind: TabStatusKind | null)

 * a stale dot. Process-exit cleanup is handled by ink.tsx's unmount path.
 */
export function useTabStatus(kind: TabStatusKind | null): void {
  const writeRaw = useContext(TerminalWriteContext)
  const prevKindRef = useRef<TabStatusKind | null>(null)

  useEffect(() => {
    // When kind transitions from non-null to null (e.g. user toggles off
    // showStatusInTerminalTab mid-session), clear the stale dot.
    if (kind === null) {
      if (prevKindRef.current !== null && writeRaw && supportsTabStatus()) {
        writeRaw(wrapForMultiplexer(CLEAR_TAB_STATUS))
      }
      prevKindRef.current = null
      return
    }

    prevKindRef.current = kind
    if (!writeRaw || !supportsTabStatus()) return
    writeRaw(wrapForMultiplexer(tabStatus(TAB_STATUS_PRESETS[kind])))
  }, [kind, writeRaw])
}