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Can i run something like: npm install passport from expressjs itself?
I want to check if i’m using a non installed module and install it before running the application.
To answer your question, yes, you should be able to check the FileSystem for specific files/folders using fs. I imagine you would need to parse your package.json and check the local node_modules or the global install path.
I would recommend a shell script to
run npm installand then fire up your app from within the same script.