Unable to find Electron app

[Mrostgaard]

• Describe the issue you encountered:
  Running npm start while running npm running watch will result in the error 'Unable to find Electron app'

• Platform (Win7, 8, 10? macOS? Linux distro?):
  MacOS

• Brave Version (revision SHA):

• Steps to reproduce:

  1. git clone https://github.com/brave/browser-laptop.git
  2. cd browser-laptop
  3. npm install
  4. npm run watch
  5. npm start

https://blog.brave.com/loading-chrome-extensions-in-brave/

• Actual result:

brave@0.15.1 start /location/browser-laptop
node ./tools/start.js --user-data-dir=brave-development --enable-logging --v=0 --enable-extension-activity-logging --enable-sandbox-logging --enable-dcheck

IOVARendererID property not found
process exited with code 1

npm ERR! Darwin 15.6.0
npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "start"
npm ERR! node v4.4.4
npm ERR! npm v2.15.1
npm ERR! code ELIFECYCLE
npm ERR! brave@0.15.1 start: node ./tools/start.js --user-data-dir=brave-development --enable-logging --v=0 --enable-extension-activity-logging --enable-sandbox-logging --enable-dcheck
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the brave@0.15.1 start script 'node ./tools/start.js --user-data-dir=brave-development --enable-logging --v=0 --enable-extension-activity-logging --enable-sandbox-logging --enable-dcheck'.
npm ERR! This is most likely a problem with the brave package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! node ./tools/start.js --user-data-dir=brave-development --enable-logging --v=0 --enable-extension-activity-logging --enable-sandbox-logging --enable-dcheck
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs brave
npm ERR! Or if that isn't available, you can get their info via:
npm ERR!
npm ERR! npm owner ls brave
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR! /location/browser-laptop/npm-debug.log

• Expected result:
  Success

• Is this an issue in the currently released version?
  Yes newest version from git

• Can this issue be consistently reproduced?
  I think... I've done it a few times

• Screenshot if needed:
  https://imgur.com/a/xFqSr

• Any related issues:
  #8596 (comment)
  Earlier error, got fixed, when getting to next step i get this error.

[cndouglas]

npm ERR! node v4.4.4

@Mrostgaard You have nodejs 4.4.4, but Brave requires nodejs 6.1 or later (according to ReadMe.md). Please download the latest nodejs version: https://nodejs.org.