'tsc command not found' in compiling types

问题:

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

回答1:

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).

回答2:

Easy fix for Mac I found. Just run these commands:

sudo npm install -g concurrently
sudo npm install -g lite-server
sudo npm install -g typescript

Nothing worked except this for me.

回答3:

If your TSC command is not found in MacOS after proper installation of TypeScript (using the following command: $ sudo npm install -g typescript, then ensure Node /bin path is added to the PATH variable in .bash_profile.

Open .bash_profile using terminal: $ open ~/.bash_profile;

Edit/Verify bash profile to include the following line (using your favorite text editor):

export PATH="$PATH:"/usr/local/lib/node_modules/node/bin"";

Load the latest bash profile using terminal: source ~/.bash_profile;

Lastly, try the command: $ tsc --version.

回答4:

For windows:

Add the path by using command as below in command prompt:
path=%path%;C:\Users\\npm

As in my case, the above path was not registered for command.

%userprofile% in run windows, will give you path to C:\users\

回答5:

This works perfectly on Mac. Tested on macOS High Sierra

sudo npm install -g concurrently
sudo npm install -g lite-server
sudo npm install -g typescript
tsc --init

This generates the tsconfig.json file.