I\'ve just rebuild my Mavericks (Mac OS X Version 9.4) machine from scratch. I am the administrator and only user of this machine.
(SOLUTION ANSWER)
Hi Guys,
I had the same problem on my MacBook Pro 2018. After trie installing any dependency globally (with "-g" or "--global") I did receive an issue "EACCES" error (it's about permissions)
You could simply add "sudo" before your commands what will force it.
For example:
sudo npm install gulp -g
or
sudo npm install browser-sync -g
Enjoy!