SPFx Extension does not generate scaffolding for project? What pre-reqs needed to set up first?

[nyannios]

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Expected or Desired Behavior

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When creating a new SPFx project Visual Studio 2017 with the SPFx extension, we get this error:

'yo' is not recognized as an internal or external command, operable program or batch file.

Observed Behavior

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'yo' is not recognized as an internal or external command, operable program or batch file.

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New Install of Visual Studio 2017 enterprise with the SPFx extension. Create SPFx Project for Web part but get error above

1. What are the path prerequisites yeoman, npm, gulp, etc on Windows 10 prior to using Visual Studio to create SPFx WebParts and Extensions?
2. Can they be installed globally rather than on every project?
3. Is there a SETUP script/PowerShell that can set up all the prerequisites first or is this documented?

SPFX.zip

Thank you

Nick

[pschaeflein]

The pre-requisites are detailed in the README.md file.

[nyannios]

Got it - Thanks!