What you get is a factory and not the actual jQuery object attached to the global context (e.g
window). As I mentioned in a previous answer (containing also jQuery's source code)
When you require jQuery inside a CommonJS or similar environment which provides
module.exports, what you get is a factory and not the actual jQuery object.
Now to use that factory (either by importing the code from the CDN or if you have the npm module available locally) you would need something as the following:
I have written an article that explains the combination of Node + jQuery.