clui is a lightweight Node‑js library that lets developers add polished, terminal‑aware UI elements to command‑line tools. It provides ready‑to‑use components such as gauges, progress bars, sparklines, spinners and a flexible line‑buffer system for building column‑based output that adapts to the current console size. The toolkit is aimed at Node developers who want to improve the look and interactivity of their CLIs with minimal effort.