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I am unable to setup SPFx Development Environment for my SharePoint Online. I installed 10.24 and 10.20 version of Nodejs then also installed gulp and yeoman. But when I execute yo @microsoft/sharepoint command, the nodejs command prompt throws error as shown in below picture. I tried multiple times to uninstall and reinstall 10.x versions of nodejs but the error is same. I am not able to find any information about this error on google.
TypeError: lookup.flatMap is not a function
This is the issue related to yeoman. You can fix this issue by downgrading it from 4.0.0 to 3.1.1
npm install [email protected] -g
This combination does not work
This combination works
I am assuming that you have installed only one version of nodejs at a time. For SPFx generator SharePoint online you will require v10.24.0 of nodejs.
Open command prompt and run following command in CMD to check global version of package
npm list -g --depth=0
Ideally it should display following following version
+-- @microsoft/generator-[email protected]
+-- [email protected]
+-- [email protected]
-- [email protected]
If you have multiple version of nodejs without using nvm then it will not work.
For more details you can refer the this Microsoft docs.
