Looks like you're introducing a change to the public API surface area. If this includes breaking changes, please document them on our wiki's API Breaking Changes page.

Also, please make sure Daniel Rosenwasser (@DanielRosenwasser) and Ryan Cavanaugh (@RyanCavanaugh) are aware of the changes, just as a heads up.

TypeScript Bot (@typescript-bot) user test this
TypeScript Bot (@typescript-bot) test top800
TypeScript Bot (@typescript-bot) pack this

Starting jobs; this comment will be updated as builds start and complete.

Hey Jake Bailey (@jakebailey), I've packed this into an installable tgz. You can install it for testing by referencing it in your package.json like so:

{
    "devDependencies": {
        "typescript": "https://typescript.visualstudio.com/cf7ac146-d525-443c-b23c-0d58337efebc/_apis/build/builds/166375/artifacts?artifactName=tgz&fileId=C423F954FA7ABC3DA7B47D6984471C48D3D6C4A6BEF4E66FD691EC5F8B596AE802&fileName=/typescript-6.0.0-insiders.20251024.tgz"
    }
}

and then running npm install.

There is also a playground for this build and an npm module you can use via "typescript": "npm:@typescript-deploys/pr-build@6.0.0-pr-62669-3".;

Jake Bailey (@jakebailey) Here are the results of running the user tests with tsc comparing main and refs/pull/62669/merge:

There were infrastructure failures potentially unrelated to your change:

• 1 instance of "Git clone failed"

Otherwise...

Everything looks good!

I am going to go ahead and port this into tsgo-port since none of these things are implemented in Corsa anyway. It should light up a bunch of new tests and make other diffs go away.

TypeScript Bot (@typescript-bot) cherry-pick into tsgo-port

Starting jobs; this comment will be updated as builds start and complete.

Jake Bailey (@jakebailey) Here are the results of running the top 800 repos with tsc comparing main and refs/pull/62669/merge:

Something interesting changed - please have a look.

microsoft/azuredatastudio

43 of 67 projects failed to build with the old tsc and were ignored

src/tsconfig.vscode-proposed-dts.json

• error TS5107: Option 'module=None' is deprecated and will stop functioning in TypeScript 7.0. Specify compilerOption '"ignoreDeprecations": "6.0"' to silence this error.
  • Project Scope

microsoft/vscode

12 of 63 projects failed to build with the old tsc and were ignored

src/tsconfig.vscode-proposed-dts.json

• error TS5107: Option 'module=None' is deprecated and will stop functioning in TypeScript 7.0. Specify compilerOption '"ignoreDeprecations": "6.0"' to silence this error.
  • Project Scope

voideditor/void

25 of 58 projects failed to build with the old tsc and were ignored

src/tsconfig.vscode-proposed-dts.json

• error TS5107: Option 'module=None' is deprecated and will stop functioning in TypeScript 7.0. Specify compilerOption '"ignoreDeprecations": "6.0"' to silence this error.
  • Project Scope

Hey, Andrew Branch (@andrewbranch)! I was unable to cherry-pick this PR.

Check the logs at: https://github.com/microsoft/TypeScript/actions/runs/18793106856

Interesting; I'll try to see what Azure Data Studio and VS Code are trying to do with --module none. We are deprecating it because its behavior is inconsistent and weird in Strada, but it could potentially be useful to bring back as something coherent if a strong case for it emerges.