Okay, next try…
npm ERR! Linux 4.4.26-v7+
npm ERR! argv "/usr/bin/nodejs" "/usr/bin/npm" "start" "dev"
npm ERR! node v7.4.0
npm ERR! npm v4.0.5
npm ERR! code ELIFECYCLE
npm ERR! magicmirror@2.0.0 start: `electron js/electron.js "dev"`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the magicmirror@2.0.0 start script 'electron js/electron.js "dev"'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the magicmirror package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! electron js/electron.js "dev"
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs magicmirror
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls magicmirror
npm ERR! There is likely additional logging output above.
npm ERR! Please include the following file with any support request:
npm ERR! /home/pi/MagicMirror/npm-debug.log