dotnetcarpenter/npm-detectionizr

Detectionizr is a lightweight Node.js utility that lets developers check at runtime whether specific npm packages, command‑line tools, or system libraries are available, mirroring Modernizr’s feature‑detection style. It provides a simple `detect` API and event callbacks so code can conditionally require or invoke external modules/commands without throwing errors, making it useful for CLI tools or apps that need to adapt to varying environments.