'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

23 Answers

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).

You are all messing with the global installations and -path files. Just a little error might damage every project you have ever written, and you will spend the rest of the night trying to get a console.log('hi') to work again.

If you have run npm i typescript --save-dev in your project - just try to run:

npx tsc 

And see if it works before messing with global stuff (unless of course you really know what you are doing)

I had to do this:

npx tsc app.ts 

After finding all solutions for this small issue for macOS only.
Finally, I got my TSC works on my MacBook pro.

This might be the best solution I found out.

For all macOS users, instead of installing TypeScript using NPM, you can install TypeScript using homebrew.

brew install typescript 

Please see attached screencap for reference.

Globally installing TypeScript package worked for me.

npm install typescript -g 

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.

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.

I had this same problem on Ubuntu 19.10 LTS.

To solve this I ran the following command:

$ sudo apt install node-typescript 

After that, I was able to use tsc.

For mac users, you don't need to restart your laptop or doing any other commands

Use brew install typescript

This answer is specific for iTermV2 on MAC

1. First of all, I needed to instal as sudo (admin) during NPM install

   sudo npm install -g typescript

2. NPM installs the libraries under /usr/local/Cellar/node/<your latest version>/lib/node_modules/typescript folder and symlinks at /usr/local/Cellar/node/<your latest version>/bin/tsc

hence I went ~/.zshrc ( .bashrc, if you use bash)and added /usr/local/Cellar/node/<your latest version>/bin to the $PATH.

3. reload the shell profile via source ~/.zshrc (.bashrc in your case)

The only solution that work for me was put npx tsc -v or for the compiling npx tsc salida.ts

"salida.ts" is the name of the file

1. Check your npm version

2. If it's not properly installed, then install it first

3. run this command npm install typescript -g

4. now tsc <file_name>.ts

5. It'll create a corresponding .js file. eg <file_name>.js

6. now try node <file_name>.js

None of above worked for me.

I tried this as well,

yum install typescript 

was able to compile by hook and crook as follows. Not recommended but just a workaround.

Just install locally using npm, as npm install typescript and verify in node_module folder, if its downloaded. and then run,

./node_modules/typescript/bin/tsc --help ./node_modules/typescript/bin/tsc //this line actually runs and compile and generate the compiled file. 

For windows and yarn user, try yarn tsc --init

Non-admin solution

I do not have admin privileges since this machine was issued by my job.

• get path of where node modules are being installed and copy to clipboard
  • npm config get prefix | clip
  • don't have clip? just copy output from npm config get prefix
• add copied path to environment variables
  • my preferred method (Windows)
  • (Ctrl + R), paste rundll32 sysdm.cpl,EditEnvironmentVariables
  • under User Variables, double-click on Path > New > Paste copied path

None of above answer solve my problem. The fact is that my project did not have type script installed. But locally I had run npm install -g typescript. So I did not notice that typescript node dependency was not in my package json.

When I pushed it to server side, and run npm install, then npx tsc I get a tsc not found. In facts remote server did not have typescript installed. That was hidden because of my local global typescript install.

On Windows 10 i solved it by adding %APPDATA%\npm to the path

I have tried a lot to deploy the Node.js typescript project on Heroku and I have tried different solutions but none of them working for me. So, I have implemented a solution that is to create a build locally which is a dist folder, and just only push dist folder with package.json files, you don't need to push your src folder to Heroku. and in your script add "start": "node dist/index.js"

Here are my project structure:

.gitignore file:

package.json file:

"start": "node dist/index.js", "deploy": "tsc && git add . && git commit -m Heroku && git push heroku master", "dev": "ts-node-dev --respawn --pretty --transpile-only src/index.ts" 

just need to add these scripts:

I was having trouble with this because I didn't want to globally install typescript. I found I had to add a script to the package.json that called tsc for me. The solution can be found here -

Use:

npm rebuild typescript 

This will rebuild the tsc link on your machine.

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\

I solved this on my machine by just running sudo npm install in the directory that I was getting the error.

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.