CODEWITHSUNDEEP
typescriptnpmtsc
Aung Thet
Aung Thet

Reputation: 3640

'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

Upvotes: 313

Views: 574139

Answers (30)

Arun Yadav
Arun Yadav

Reputation: 41

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>

Upvotes: 1

xab
xab

Reputation: 1256

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

Upvotes: 0

geeky01adarsh
geeky01adarsh

Reputation: 400

For pnpm:

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

Upvotes: 2

Haroon Hayat
Haroon Hayat

Reputation: 455

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

Upvotes: 0

PKS
PKS

Reputation: 773

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

sudo npm install -g typescript

Upvotes: 2

Rubel Biswas
Rubel Biswas

Reputation: 1444

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.

Upvotes: 9

MD Jahid Hasan
MD Jahid Hasan

Reputation: 1113

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.

Upvotes: 4

Moshe Simantov
Moshe Simantov

Reputation: 4503

Use:

npm rebuild typescript

This will rebuild the tsc link on your machine.

Upvotes: 8

jake
jake

Reputation: 173

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

Upvotes: 0

Lahiru Amarathunge
Lahiru Amarathunge

Reputation: 819

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

Use brew install typescript

Upvotes: 10

Pavneet Kaur
Pavneet Kaur

Reputation: 797

Globally installing TypeScript package worked for me.

npm install typescript -g

Upvotes: 20

Tim Woohoo
Tim Woohoo

Reputation: 562

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

Upvotes: 3

Hari Kishore
Hari Kishore

Reputation: 2900

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.

Upvotes: 1

sheikh fahad
sheikh fahad

Reputation: 13

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:
Here are my project structure:

.gitignore file:
.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:
just need to add these scripts:

Upvotes: 0

Virax
Virax

Reputation: 26

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

Upvotes: 1

Rodrigo Marques
Rodrigo Marques

Reputation: 164

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.

Upvotes: 3

Marjun Villegas
Marjun Villegas

Reputation: 553

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. enter image description here

Upvotes: 39

Per H&#248;yer
Per H&#248;yer

Reputation: 2479

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)

Upvotes: 246

Akash Dutta
Akash Dutta

Reputation: 41

  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

Upvotes: 2

Romain TAILLANDIER
Romain TAILLANDIER

Reputation: 2015

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.

Upvotes: 1

sjs
sjs

Reputation: 51

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.

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

Upvotes: 5

juan.pedro.v
juan.pedro.v

Reputation: 21

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

Upvotes: 2

codeherk
codeherk

Reputation: 1657

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

Upvotes: 0

mbspark
mbspark

Reputation: 611

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

Upvotes: -2

Oscar Jovanny
Oscar Jovanny

Reputation: 1147

I had to do this:

npx tsc app.ts

Upvotes: 101

Pandi
Pandi

Reputation: 141

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.

Upvotes: 14

alexeis
alexeis

Reputation: 34

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.

Upvotes: -5

Teja
Teja

Reputation: 81

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.

Upvotes: 0

Durgesh
Durgesh

Reputation: 98

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\

Upvotes: -1

basarat
basarat

Reputation: 276353

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).

Upvotes: 303

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