tsc is not recognized as internal or external command

Question

I updated from VSCode 0 10 6 to 0 10 8  and tried using Typescript for the first time   Unfortunately I when I tell VSCode to build  I get the error   tsc is not a recognized as an internal or external command     Here are the relevant details   I created a fresh  quot HelloWorld quot  project according to VS Code instructions   This included   I ran npm init for a new package json I ran npm i --save-dev typescript because I want a local install  rather than a global install  I created a launch json to define a node js project  I created the tasks json file  with prescribed settings for tsc    I have made a settings json file  as shown here   It did not help  I do have Visual Studio 2015 Community installed  but I have not installed a Typescript extension of any kind   When I type  quot where tsc quot  at a developer command prompt  it replies  quot could not find quot   I assume this is a good thing   I have restarted VSCode  several times    What am I missing   What more must be done  Update I tried the solution offered by  zlumer   It succeeded in making the typescript compiler run  but then it caused thousands of errors to appear   To fix that  I also had to adjust my tsconfig json to exclude the node modules folder   quot exclude quot          quot node modules quot

User · Answer

For me  by running Visual Studio Code as Administrator  the problem is resolved

User · Answer

Me too faced the same problem  Use nodeJS command prompt instead of windows command prompt    Step 1  Execute the npm install -g typescript  Step 2  tsc filename ts  New file will be create same name and different extension as   js   Step 3  node filename js  You can see output in screen  It works for me

User · Answer

tsc is not recognized as internal or external command As mentioned in another answer this is because tsc is not present in path  1  Install as global package To make TypeScript compiler available to all directories for this user  run the below command  npm install -g typescript  You will see something similar to C  Users username AppData Roaming npm tsserver - gt  C  Users username AppData Roaming npm node modules typescript bin tsserver C  Users username AppData Roaming npm tsc - gt  C  Users username AppData Roaming npm node modules typescript bin tsc   typescript 3 6 3 added 1 package from 1 contributor in 4 769s 2  Set the environment variable  Add the npm installation folder to your  quot user variables quot  AND  quot environment variables quot    In windows you can add environment variable    PATH with value C  Users username AppData Roaming npm    i e  wherever the npm installation folder is present   Note  If multiple Paths are present separate them with a   semicolon   If the below command gives the version then you have successfully installed tsc --version

User · Answer

For windows  After installing typescript globally  npm install typescript -g    just search for  node js command prompt   type in command promt   tsc -v    Here we can see tsc command works  now navigate to your folder and type   tsc filename ts    its complies ts to js file

User · Answer

Alternatively you can use npm which automatically looks into the  bin folder  Then you can use tsc

User · Answer

If you want to run the tsc command from the integrated terminal with the TypeScript module installed locally  you can add the following to your  vscode settings json file       quot terminal integrated env windows quot      quot PATH quot    quot   workspaceFolder   node modules   bin   env PATH  quot       This will prepend the locally installed node module s binary executable directory  where tsc cmd is located  to the  env PATH variable

User · Answer

In the VSCode file tasks json  the  command    tsc  will try to find the tsc windows command script in some folder that it deems to be your modules folder   If you know where the command npm install -g typescript or npm install typescript is saving to  I would recommend replacing    command    tsc    with   command    D   Projects  TS  Tutorial  node modules   bin  tsc    where D        bin is the folder that contains my tsc windows executable    Will determine where my vscode is natively pointing to right now to find the tsc and fix it I guess

User · Answer

There might be a reason that Typescript is not installed globally  so install it  npm install -g typescript    installs typescript globally   If you want to convert  ts files into  js  do this as per your need  tsc file ts    file ts will be converted to file js file tsc            all  ts files will be converted to  js files in the directory tsc --watch    converts all  ts files to  js  and watch changes in  ts files

User · Answer

You have missed typescript installation  just run below command and then try tsc --init  npm install -g typescript

User · Answer

You need to run  npx tsc     rather than just calling tsc own its on like a Windows command as everyone else seems to be suggesting  If you don t have npx installed then you should  It should be installed globally  unlike Typescript   So first run  npm install -g npx    then run npx tsc

User · Answer

The problem is that tsc is not in your PATH if installed locally   You should modify your  vscode tasks json to include full path to tsc   The line to change is probably equal to  command    tsc    You should change it to  command    node  and add the following to your args   args       workspaceRoot   node modules  typescript  bin  tsc    on Windows    This will instruct VSCode to    Run NodeJS  it should be installed globally   Pass your local Typescript installation as the script to run     that s pretty much what tsc executable does   Are you sure you don t want to install Typescript globally  It should make things easier  especially if you re just starting to use it

User · Answer

One more scenario of this error  Install typescript locally and run the command without npm run First  it is important to notice this is a  quot general quot  terminal error  Even if you write hello bla js -or- wowowowow index js     quot hello world quot  example of this error   You install typescript locally  without -g     gt  npm install typescript  https   docs npmjs com downloading-and-installing-packages-locally In this case tsc commands available if you run npm run inside your local project  For example  npm run tsc -v    -or- install typescript globally  Like other answer mention    Related Q  How to install and run Typescript locally in npm   Related guide  https   code visualstudio com docs typescript typescript-compiling

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