Error: EACCES: permission denied, access '/usr/lib/node_modules'

Question

I am trying install typescript with command npm install -g typescript, and returns this error :

    npm ERR! Error: EACCES: permission denied, a         


        

Answer 1

1) Go to the directory “/usr/local/lib/node_modules”

2) Click on the folder and right click Get info

3) Click the lock at the bottom right

4) Key in your window password to unlock

5) Check both the value of Wheel and Everyone to Read & Write

6) Go back to your terminal and try to install the Typescript again