Sync vscode sources in vscode-copilot-chat

[roblourens]

Had issues syncing vscode sources into the chat extension (see https://github.com/microsoft/vscode-copilot-chat/blob/main/CONTRIBUTING.md#use-basecommon-utils) due to a difference in base .d.ts between the two.

PR microsoft/vscode-copilot-chat#518

The typecheck script failed with errors like this Error: src/util/vs/base/common/async.ts(520,3): error TS2741: Property '_' is missing in type 'Timeout' but required in type 'TimeoutHandle'.

https://github.com/microsoft/vscode-copilot-chat/actions/runs/16837700919/job/47701113942#step:10:15

If I just run the npx tsc --noEmit --project test/simulation/workbench/tsconfig.json part, it fails, but if I run npx tsc --noEmit --project tsconfig.json it doesn't fail. I made this commit microsoft/vscode-copilot-chat@45f35b0 to work around it. I can't figure out why this is happening but it seems like the simulation workbench build just doesn't see the base-common.d.ts overload of setTimeout. When that error says Timeout it's referring to NodeJS.Timeout, not the Timeout type in that file. Any ideas @bpasero?

If you want to try it yourself, you can check out that PR, just make sure you either get the commit before microsoft/vscode-copilot-chat@45f35b0 or revert that change. Then run npm run typecheck.

[bpasero]

@roblourens this is bizarre, especially since it seems to work just fine for all the other projects besides the simulation workbench 🤔

I would think that the d.ts is included via this directive:

https://github.com/microsoft/vscode-copilot-chat/blob/4b82e6bb4649715de8cae316d0edb6eaf8b4accc/test/simulation/workbench/tsconfig.json#L10

[bpasero]

@roblourens frankly, I do not fully get why the simulation workbench tsconfig.json would typecheck "../../../src/util/vs/**/*",.

Here is a better approach, change it to:

{
	"extends": "../../../tsconfig.base.json",
	"compilerOptions": {
		"lib": ["ES2022", "DOM", "DOM.Iterable", "WebWorker.ImportScripts"],
		"jsx": "react",
		"rootDir": "../../../",
		"experimentalDecorators": true
	},
	"include": [
		"**/*",
		"../../../src/extension/vscode.d.ts",
		"../../../src/util/vs/*.d.ts"
	],
	"exclude": ["../fixtures/**/*", "../shims/vscodeTypesShim.ts"]
}

And then there is actually just 1 compile error left that seems valid (inside simulation workbench)!

~/Development/Microsoft/vscode-copilot-chat> tsc --noEmit --project test/simulation/workbench/tsconfig.json
test/simulation/workbench/stores/detectedTests.ts:29:4 - error TS2740: Type 'TimeoutHandle' is missing the following properties from type 'Timeout': close, hasRef, ref, refresh, and 4 more.

29    timer = setInterval(() => this._updateTests(), 5000);
      ~~~~~


Found 1 error in test/simulation/workbench/stores/detectedTests.ts:29