diff --git a/package.json b/package.json
index 93f2971d..4d7b08af 100644
--- a/package.json
+++ b/package.json
@@ -21,13 +21,13 @@
     "dist"
   ],
   "type": "module",
-  "main": "./dist/ts-jest-mock.umd.js",
-  "module": "./dist/ts-jest-mock.es.js",
+  "main": "./dist/ts-jest-mock.umd.cjs",
+  "module": "./dist/ts-jest-mock.js",
   "exports": {
     ".": {
       "types": "./dist/types/index.d.ts",
-      "import": "./dist/ts-jest-mock.es.js",
-      "require": "./dist/ts-jest-mock.umd.js"
+      "import": "./dist/ts-jest-mock.js",
+      "require": "./dist/ts-jest-mock.umd.cjs"
     }
   },
   "release": {
diff --git a/tsconfig.json b/tsconfig.json
index 0d15f5c7..ff5a0085 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -10,12 +10,10 @@
     "declaration": true
   },
   "include": [
-    "lib/**/*.ts",
+    "lib/index.ts",
     "global.d.ts"
   ],
   "exclude": [
     "node_modules",
-    "lib/sample",
-    "*.spec.ts"
   ]
 }
diff --git a/tsconfig.project.json b/tsconfig.project.json
deleted file mode 100644
index a38e1bae..00000000
--- a/tsconfig.project.json
+++ /dev/null
@@ -1,14 +0,0 @@
-{
-  "extends": "./tsconfig.json",
-  "compilerOptions": {
-    "esModuleInterop": true,
-    "lib": [
-      "ESNext"
-    ]
-  },
-  "include": [
-    "./**/*.mjs",
-    "./**/*.cjs",
-    "./*.ts"
-  ]
-}