karma‑growl‑reporter is a Karma test‑runner plugin that sends the results of each test run to the desktop notification system **Growl** (Mac, Windows, Linux). By adding it as a devDependency and enabling the “growl” reporter in a Karma configuration, developers get instant pop‑up notifications—optionally prefixed—to quickly see whether their unit tests passed or failed, which is especially handy when running multiple Karma instances in parallel.