[Feature Request] Support using nightly TypeScript

[tjx666]

As we know, there is an extension JavaScript and TypeScript Nightly which enables the nightly build of TypeScript (typescript@next) as VS Code's built-in TypeScript version used to power JavaScript and TypeScript IntelliSense.

But now volar only support toggle typescript version between builtin and workspace version:

It would be helpful to support using the nightly typescript version. For example, I can using the latest got to source definition function comes with the latest typescript.

[tjx666]

Seems not work in latest version. @johnsoncodehk
Same with before.

[johnsoncodehk]

@tjx666 What behavior are you expecting and it doesn't work?

[tjx666]

When I open .ts file, I can easily toggle to typescript version to ts4.8 with extension JavaScript and TypeScript Nightly by command TypeScript: Select TypeScript Version...：

2022-07-20.16.41.51.mov

But when I open .vue file, using command Volar: Select TypeScript Version... can only select ts4.7:

[tjx666]

@johnsoncodehk So, how can I easily toggle ts version to 4.8. Seems I have to install 4.8 as dependency now.

[yaegassy]

@tjx666 This "JavaScript and TypeScript Nightly" extention goes into the extension folder installed by the user.

Try setting typescript.tsdk in .vscode/settings.json. This is an example of my environment.

{
  "typescript.tsdk": "/Users/yaegassy/.vscode/extensions/ms-vscode.vscode-typescript-next-4.8.20220719/node_modules/typescript/lib",
}

You will probably see more items available for selection in "Use Workspace Version". Perhaps, but it is also
possible to use typescript/lib installed at an arbitrary location.

(As a supplement, I have not checked the operation in detail.)

REF:

• https://code.visualstudio.com/docs/typescript/typescript-compiling#_using-the-workspace-version-of-typescript

[tjx666]

I think volar can search the folder /Users/yaegassy/.vscode/extensions/ms-vscode.vscode-typescript-next-xxx/node_modules/typescript/lib and provide it in pick list.

JavaScript and TypeScript Nightly is the official recommend extension to using the latest typescript.

[yaegassy]

@tjx666 Are there any other VSCode extensions that support this?

[tjx666]

@tjx666 Are there any other VSCode extensions that support this?

Seems very few extensions will manage typescript version by themself.

[yaegassy]

If you are a user with a high technical level who uses TypeScript's Nightly, setting up typescript.tsdk is very very easy task. :)

typescript.tsdk can handle this, but if you need the feature you want ASAP, you may want to create a pull request.

I think this is the related code. (and there may be others)

• https://github.com/johnsoncodehk/volar/blob/master/extensions/vscode-vue-language-features/src/features/tsVersion.ts
• https://github.com/johnsoncodehk/volar/blob/master/packages/shared/src/ts_node.ts

[johnsoncodehk]

Reference: https://github.com/microsoft/vscode/blob/8559324b0988ffac5cd6a1af35b77d279c927545/extensions/typescript-language-features/src/tsServer/versionProvider.electron.ts#L77

[tjx666]

Ok, I will try to implement this and make a pr this weekend

[tjx666]

@johnsoncodehk @yaegassy any way to get currrent used ts version?

using clients[0].clientOptions.initializationOptions.typescript ?