missing `deleteFile` function in VirtualTypeScriptEnvironment

[flurrux]

the VirtualTypeScriptEnvironment interface has two file-related functions createFile and updateFile, but seemingly no deleteFile.

TypeScript-Website/packages/typescript-vfs/src/index.ts

Lines 22 to 23 in b89d197

	createFile: (fileName: string, content: string) => void
	updateFile: (fileName: string, content: string, replaceTextSpan?: import("typescript").TextSpan) => void

is this intended?
i've tried using the VirtualTypeScriptEnvironment.sys.deleteFile function, but it is undefined.

my current workaround is to set the file contents to a single-space string (completely empty strings currently throw errors as reported here: #2713).
it's not too big an issue for me right now since my virtual files are not directly visible and their names are auto-incremented, but i figured this would be worth posting here.

[orta]

I never needed one for the Playground, / twoslash so I never thought to add it - I think it makes sense to send a PR adding it 👍🏻

[typescript-bot]

Hello! As per #2804, we are automatically closing all open issues. Please see #2804 for a description of what issues and PRs can be accepted going forward.

[marklundin]

Just following up on this. Is there a reason deleteFile is no included? I could take a look at a PR, but wanted to make sure the omission is not by design