refactor: move jest and add package.json to /test

lib/vscode/build/tsconfig.json

@@ -15,8 +15,7 @@
 		"strict": true,
 		"noUnusedLocals": true,
 		"noUnusedParameters": true,
-		"newLine": "lf",
-		"skipLibCheck": true
+		"newLine": "lf"
 	},
 	"include": [
 		"**/*.ts"

lib/vscode/extensions/typescript-language-features/src/utils/platform.ts

@@ -6,6 +6,6 @@
 import * as vscode from 'vscode';
 
 export function isWeb(): boolean {
-	// NOTE@coder: Remove unused ts-expect-error directive which causes tsc to error.
+	// @ts-expect-error
 	return typeof navigator !== 'undefined' && vscode.env.uiKind === vscode.UIKind.Web;
 }