I'm afraid this wiki documentation or wiki does not show the correct protocol to install the visual editor, I've spent a lot of time trying without result, I'm thinking about change the product for a wiki, does not give me the correspondent support or help.
the documentation of this wiki is so rolled that is imposible to configure this extension, is not clear at all, apart of that I think there woul be a wiki page describing the complete protocol to install the 3 products , nodejs with the correct version of each SO, the correct version of parsoid for each SO and nodejs and mediawiki, and finally the correct version os visual Editor Extension.