What is the Yeoman Doctor used for?

• A. Installing dependencies automatically.
• B. Running unit tests for generators.
• C. Diagnosing your development environment (Node, npm, Git, JDK, etc.) to ensure Yeoman runs smoothly.
• D. Building assets for the generated project.

Answer: (C)

Yeoman Doctor is a diagnostic tool that checks your local setup to ensure Yeoman generators can run without surprises. It verifies that your development environment has the right versions and configurations for essential tools like Node.js, npm, Git, and other prerequisites (such as Java/JDK, Python, etc.). By surfacing missing or misconfigured components and offering guidance to fix them, it helps prevent environment-related failures so Yeoman can run smoothly. This isn’t about installing dependencies automatically, running unit tests for generators, or building assets for the generated project—that happens separately, after the scaffolding is created.