Studio Log is a lightweight Node.js logger that writes structured NDJSON entries to a configurable stream and can pipe them through formatters (e.g., the emoji‑rich *emojilog* CLI) for pretty printing. It uses expressive “topics” instead of traditional log levels, supports child loggers, and is disabled by default so it won’t interfere with tests, making it ideal for server‑side or CLI applications that need structured, filterable logs.