refactor(testing): migrate from Vitest to Jest

- Update test configuration files
  - Add new Jest configuration file
  - Remove Vitest configuration files
  - Configure Jest with TypeScript support
  - Set up VSCode mocking
- Consolidate TypeScript configurations
  - Remove separate ESLint and Vitest configs
  - Update main tsconfig.json
    - Add test directory to includes
    - Include config files in root
    - Add Jest types
- Update ESLint parser configuration to use main tsconfig

Author: tsdevau

eslint.config.mjs

@@ -21,7 +21,7 @@ export default [
       sourceType: "module",
       parser: tsEslintParser,
       parserOptions: {
-        project: "./tsconfig.eslint.json",
+        project: "./tsconfig.json",
         tsconfigRootDir: ".",
       },
     },

jest.config.mjs

@@ -0,0 +1,18 @@
+export default {
+  preset: "ts-jest",
+  testEnvironment: "node",
+  testMatch: ["**/test/**/*.test.ts"],
+  transform: {
+    "^.+\\.tsx?$": [
+      "ts-jest",
+      {
+        tsconfig: "tsconfig.json",
+      },
+    ],
+  },
+  moduleFileExtensions: ["ts", "tsx", "js", "jsx", "json", "node"],
+  moduleNameMapper: {
+    "^vscode$": "<rootDir>/test/__mocks__/vscode.ts",
+  },
+  silent: true,
+}

tsconfig.eslint.json

@@ -8,8 +8,9 @@
     "skipLibCheck": true,
     "sourceMap": true,
     "strict": true,
-    "target": "ES2022"
+    "target": "ES2022",
+    "types": ["node", "vscode", "jest"]
   },
-  "include": ["src"],
-  "exclude": ["node_modules", ".vscode-test"]
+  "include": ["src", "test", "./*.mjs"],
+  "exclude": ["node_modules", ".vscode-test", "deprecated-tests"]
 }