ignore‑styles is a tiny Node hook (compatible with Babel’s `register`) that tells Node to silently ignore imported style files such as `.css`, `.scss`, `.sass`, etc., when the code is run outside a bundler (e.g., in Mocha tests). It’s aimed at JavaScript/React developers who use Webpack‑style CSS imports in their source but need those imports to be no‑ops—or optionally return mock values—during server‑side execution or unit testing.