Based on your log errors, i can see that is EACCES permissions errors

As the npm package documentation suggest, try to manually npm default directory, you can follow the steps mentioned in this document:

• Manually change npm's default directory
• Resolving EACCES permissions errors

So even if you do not get your issue resolved after changing directory manually, taking a look at these source should help you out:

• Error: EACCES, permission denied even after using sudo?
• Error: EACCES: permission denied, access '/usr/local/lib/node_modules'

Hope these will help you fix installing the packages globally.