sc‑utils is a lightweight JavaScript library that provides a collection of generic helper functions—type checks, numeric utilities (e.g., linear, logarithmic, exponential scaling, dB/linear conversions, MIDI‑frequency conversions), timers, and other small tools useful in audio‑DSP and web development. It is intended for developers who need reliable, reusable utility routines in Node or browser environments, especially those working with audio or signal‑processing code.