Intermediate still contains errors, but an attempt to solve filtering as per .gitignore

jest.config.js

@@ -0,0 +1,19 @@
+/** @type {import('ts-jest').JestConfigWithTsJest} **/
+module.exports = {
+  preset: 'ts-jest',
+  testEnvironment: 'node',
+  transform: {
+    '^.+\.tsx?$': ['ts-jest', {}],
+  },
+  testMatch: ['**/test/**/*.ts'],
+  moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'node'],
+  globals: {
+    'ts-jest': {
+      tsconfig: 'tsconfig.json',
+    },
+  },
+  // Mock the vscode module since it's not available during testing
+  moduleNameMapper: {
+    '^vscode$': '<rootDir>/src/test/vscode-mock.ts'
+  },
+};