Python and Visual Studio needed to install a Node.js module (Superfeedr Node.js wrapper)

I try to install a module to interract with Superfeedr's XMPP API in the Node.js. As explained here (https://github.com/superfeedr/superfeedr-node), this is what I do in Node.js:

npm install superfeedr

But I get the following messages in the console:

// at the beginning it seems ok but then...C:\Users\Gabrielle\node_modules\superfeedr\node_modules\node-xmpp\node_modules\node-xmpp-core\node_modules\node-stringprep>node "C:\Program Files\nodejs\node_modules\npm\bin\node-gyp-bin\\..\..\node_modules\node-gyp\bin\node-gyp.js" rebuildgyp ERR! configure errorgyp ERR! stack Error: Can't find Python executable "python", you can set the PYTHON env variable.gyp ERR! stack     at failNoPython (C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:101:14)gyp ERR! stack     at C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:64:11gyp ERR! stack     at Object.oncomplete (fs.js:107:15)gyp ERR! System Windows_NT 6.0.6001gyp ERR! command "node""C:\\Program Files\\nodejs\\node_modules\\npm\\node_modules\\node-gyp\\bin\\node-gyp.js""rebuild"gyp ERR! cwd //and much following...

Am I missing something? Why is Python mentioned (I don't use Python at all)?