'tsc command not found' in compiling typescript

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.

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

Use brew install typescript

First Install typescript by running this command npm install typescript or npm install -g typescript [ for installing typescript globally ] then run npx tsc --version for checking version of Typescript, instead of tsc --version.

Same goes to running any typescript file, just run npx tsc <filename>.ts For example, for a file named hello.ts, run npx tsc hello.ts.

Use:

npm rebuild typescript

This will rebuild the tsc link on your machine.

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)

In package.json

  "scripts": {
    "tsc": "./node_modules/typescript/bin/tsc",
    "postinstall": "npm run tsc"
  },

Works for me for Heroku deployment. Installing typescript npm install -D typescript and writing tsc in the build script "build": "tsc", does not work 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 windows and yarn user, try yarn tsc --init

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

Don't forget to use sudo if you are using Linux.

sudo npm install -g typescript 

For pnpm:

I was using pnpm and the same error occurred to me, which I fixed using npx tsc index.js

Just try to install typescript globally before your script, something like as follows

Yml file sample

 script:
   - cd utils
   - npm install -g typescript
   - tsc ../utils/<your-script>.ts
   - node ../utils/<your-script> 

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

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. 

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.

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

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 - https://stackoverflow.com/a/41446584/6301243

I apply many things but these two are the way which might be work for you:

• Reinstall npm with a node version manager (recommended)
• Manually change npm's default directory

One possible culprit to this could be having a typo in your dependency key at package.json, when running yarn in your monorepo root does not install typescript.
In my case I manually added a new lib to my monorepo and then tried to type "devDependencies" into package.json, but instead ended up with "devDependecies".

To fix this, install typescript from your terminal at your monorepo root:
yarn workspace @myorg/mylib -D typescript

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.