Install typescript version matching installed compiler version.

[osyrisrblx]

We can fetch + parse the package.json using jsdelivr.net

The end result should be like "typescript": "=5.3.3",

[Dionysusnu]

Supersedes roblox-ts/roblox-ts#2199

Is jsdelivr the preferred strategy? We could also install roblox-ts first, then parse the node_modules/roblox-ts/package.json.

[osyrisrblx]

Copying the body from roblox-ts/roblox-ts#2199

Running rbxtsc init will make the package manager install the latest (stable) version of TypeScript, not the actual version that roblox-ts is meant to support. This causes version conflicts, where for example the user's editor might show support for a new feature, but the compiler wouldn't yet recognise it.

[osyrisrblx]

We could also install roblox-ts first, then parse the node_modules/roblox-ts/package.json.
This is possible, but I am concerned about having to run npm install twice. It's not a very fast command. 😓

I realized jsdelivr might have caching issues with @latest.

Alternatively, we could do:

npm view roblox-ts@latest dependencies.typescript

(or swap @latest for a specific version)

Whatever caching issues this has would probably match npm install.