'tsc command not found' in compiling typescript

I want to install typescript, so I used the following command:

npm install -g typescript

and test tsc --version, but it just show 'tsc command not found'. I have tried many ways as suggested in stackoverflow, github and other sites. but it doesn't work. How could I know typescript is installed and where it is.

my OS is Unix, OS X El Capitan 10.11.6,
node version is 4.4.3,
npm version is 3.10.5

A few tips in order

• restart the terminal

• restart the machine

• reinstall nodejs + then run npm install typescript -g

If it still doesn't work run npm config get prefix to see where npm install -g is putting files (append bin to the output) and make sure that they are in the path (the node js setup does this. Maybe you forgot to tick that option).

Stack Overflow Q#39404922, score: 313