Use cd to get into the folder where this package is, generally:
cd ~\.pulsar\packages\pulsar-mouse-buttonsOnce there you will need to ensure that the mouseDetect dependency is built, to do this cd into it
cd .\lib\mouseDetectand run
node-gyp configureIf you encounter any errors, you should make sure you installed properly (don't forget to restart your computer after installing everything)
Next run
node-gyp buildthen run
npm buildthen go back to the main package directory with
cd ..\..and run
npm build