Add TypeScript

[violet-devsec]

Tool information

• Tool name: TypeScript
• Tool license: GPL
• Add or update? Add
• Desired version: Latest or 3.5.3
• Approximate size:
• If this is an add request:
  • Brief description of tool: TypeScript is designed for development of large applications and transcompiles to JavaScript.
  • URL for tool's homepage: https://www.typescriptlang.org/

Area for Triage: Scripting and command line

Question, Bug, or Feature?: Feature

Virtual environments affected

• Windows Server 2016 R2
• Windows Server 2019

Can this tool be installed during the build?

Tool installation time in runtime

Are you willing to submit a PR?

[maxim-lobanov]

Hello, we already installing TypeScript on Windows images but don't publish it in documentation since it is just NPM package: https://github.com/actions/virtual-environments/blob/master/images/win/scripts/Installers/Install-TypeScript.ps1

Btw, what is the use case to have TypeScript pre-installed? It is pretty small NPM package that usually included to package.json and downloaded during npm install. Pre-installing TypeScript on image is some kind of pre-caching but we cache the single version and package.json can point to different one.

[violet-devsec]

Thanks for the info @maxim-lobanov. I have solved my issue by adding TypeScript to package.json.

I had an issue with TypeScript version. But I was not sure whether TyepScript pre-installed or package.json making the issue.