Which command runs the Yeoman Doctor to diagnose environment issues?

Which command runs the Yeoman Doctor to diagnose environment issues?

• A. yo doctor
• B. yeoman diagnose
• C. yeoman-doctor run
• D. yo diagnose

Answer: (A)

To diagnose environment issues in Yeoman, you use the Doctor tool, which is invoked as a subcommand of the Yeoman CLI: type yo doctor. The doctor runs a series of checks on your development setup—like Node.js, npm, Yeoman version, and other dependencies—and reports any problems along with guidance to fix them. This is the standard way to quickly surface setup problems before running generators. The other forms shown aren’t recognized commands in Yeoman, so they wouldn’t run the diagnostic.

To diagnose environment issues in Yeoman, you use the Doctor tool, which is invoked as a subcommand of the Yeoman CLI: type yo doctor. The doctor runs a series of checks on your development setup—like Node.js, npm, Yeoman version, and other dependencies—and reports any problems along with guidance to fix them. This is the standard way to quickly surface setup problems before running generators.

The other forms shown aren’t recognized commands in Yeoman, so they wouldn’t run the diagnostic.