chore: replace @shelf/babel-config with @swc/jest

- Remove @babel/cli, @babel/core, and @shelf/babel-config dependencies
- Replace babel-jest transform with @swc/jest in jest preset
- Update build command to use tsc instead of babel
- Update tsconfig.json with ESNext module target and proper outDir configuration
- Add TypeScript syntax support to SWC Jest configuration
- All tests, lint, and type-check commands pass successfully

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: vladholubiev

package.json

@@ -21,8 +21,7 @@
     "lib/"
   ],
   "scripts": {
-    "build": "rm -rf lib/ && pnpm run build:types && babel src --out-dir lib --ignore '**/*.test.ts' --extensions '.ts'",
-    "build:types": "tsc --emitDeclarationOnly --declaration --isolatedModules false --declarationDir lib",
+    "build": "rm -rf lib/ && tsc",
     "lint": "pnpm run lint:ci --fix",
     "lint:ci": "eslint . --quiet",
     "prepack": "pnpm run build",
@@ -31,9 +30,6 @@
     "type-check": "tsc --noEmit",
     "type-check:watch": "pnpm run type-check --watch"
   },
-  "babel": {
-    "extends": "@shelf/babel-config/backend"
-  },
   "prettier": "@shelf/prettier-config",
   "jest": {
     "preset": "./jest-preset.js"
@@ -43,13 +39,11 @@
     "mongodb-memory-server": "10.3.0"
   },
   "devDependencies": {
-    "@babel/cli": "7.28.0",
-    "@babel/core": "7.28.0",
     "@jest/environment": "30.2.0",
-    "@shelf/babel-config": "3.0.0",
     "@shelf/eslint-config": "5.2.3",
     "@shelf/prettier-config": "1.0.0",
     "@shelf/tsconfig": "0.1.0",
+    "@swc/jest": "0.2.31",
     "@types/jest": "29.5.14",
     "@types/node": "22",
     "eslint": "9.32.0",

src/index.ts

@@ -6,4 +6,16 @@ export default {
   globalSetup: resolve(__dirname, './setup.js'),
   globalTeardown: resolve(__dirname, './teardown.js'),
   testEnvironment: resolve(__dirname, './environment.js'),
+  transform: {
+    '^.+\\.(t|j)sx?$': [
+      '@swc/jest',
+      {
+        jsc: {
+          parser: {
+            syntax: 'typescript',
+          },
+        },
+      },
+    ],
+  },
 };

tsconfig.json

@@ -1,8 +1,14 @@
 {
   "extends": "@shelf/tsconfig/backend",
   "compilerOptions": {
-    "strict": true
+    "strict": true,
+    "module": "commonjs",
+    "target": "ESNext",
+    "moduleResolution": "node",
+    "declaration": true,
+    "resolveJsonModule": false,
+    "outDir": "lib"
   },
-  "exclude": ["node_modules"],
+  "exclude": ["node_modules", "**/*.test.*", "**/*.mock.ts"],
   "include": ["src"]
 }