npm fails to update the tsc version

To update Typescript, use the following command:

npm install typescript -g

I have successfully installed the latest version 2.4.2 and confirmed it by checking the path with this command:

npm list typescript -g

However, when I check the version using tsc -v, it shows an older version (1.0.3.0).

I also checked the TEMP variable and it is pointing to the same path as shown in npm list.

Running where tsc in the command prompt does not display anything and does not result in any errors.

typescriptnpmvisual-studio-codetsc

Answer №1

It appears that an outdated version of TypeScript has been installed through Visual Studio, overshadowing the npm-installed version. Adjusting the PATH variable may be necessary.

To verify, launch a Command Prompt (CMD.exe) and enter

where tsc

If the listed paths do not point to Node/npm but rather to locations like 

C:\Program Files (x86)\Microsoft SDKs\TypeScript\...
, adjusting system environment variables is required.

  1. Access your start menu.
  2. Search for system environment variables
  3. Open the option called 
    Edit the system environment variables
  4. Confirm that the PATH environment variable prioritizes the Node/npm location over the Visual Studio location.
    1. Similarly, prioritize any newer Visual Studio installation paths over older ones.

Refer to this answer for more information.

Answer №2

In my opinion, it is necessary to perform the following steps:

npm install -g typescript@latest

or

npm update -g typescript

This solution was provided in a previous response at this location

Answer №3

To find out which version of TypeScript is being used on a Windows system, open the command prompt and enter: where tsc

This command will display a list showing the different TypeScript versions that your PATH and global settings are currently configured for.

Navigate to the directory path: C:\xxxxx\Microsoft SDKs\TypeScript

Once there, remove any older version folders except for the most recent one. Then verify your current TypeScript version again.

Wishing you a wonderful day ahead!

Answer №4

Erase the TypeScript directory located in 

C:\Program Files (x86)\Microsoft SDKs
.

Answer №5

For those working with IntelliJ IDE, follow these steps:

Go to Preferences > Language & Frameworks > Typescript

Then, update the Typescript select field with the appropriate path.

Answer №6

To locate the previous version of typescript on a Windows computer, you should navigate to this address: C:\Program Files (x86)\Microsoft SDKs\TypeScript

Simply follow these steps: access the C drive, open the Program Files (x86) folder, locate the Microsoft SDKs folder, and there you will find the typescript folder. You can move or delete the folder from this location, then return to the command prompt and input the path for typescript to discover the new path and the most recent version.

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