Compilation issue with typescript file

Question

I'm new to typescript and was trying to work on it where in I came across this issue, where I saved a file using .ts extension and instead of recognizing the file as a typescript file,the system is recognizing it as a Transport Stream file. I have already installed all the typescript files using node. Whenever I try to compile the code the error displayed is as follows:

PS D:\WorkSpace\typescript> tsc basics.ts tsc : File C:\Users\mn\AppData\Roaming\npm\tsc.ps1 cannot be loaded because running scripts is disabled on this system. For more information, see about_Execution_Policies at https:/go.microsoft.com/fwlink/?LinkID=135170.

At line:1 char:1

• tsc basics.ts

• + CategoryInfo          : SecurityError: (:) [], PSSecurityException
  + FullyQualifiedErrorId : UnauthorizedAccess
  

This is how the file appears in the folder:

Folder image

Answer 1

1. Run the Windows PowerShell as RunAsAdministrator
2. type Set-ExecutionPolicy Unrestricted
3. exit and run compiler again

Answer 2

For now, I suggest removing all .ps1 files from your npm bin folder.

Sometimes changing the execution policy is not a good practice. A more restricted Execution policy (RemoteSigned) helps users from unintentionally running malicious code.

The issue is still open in the npm/cli repository, labeled as 'Needs Discussion' Necessity of Powershell Script Support for Global Packages.