diff --git a/cjs/index.js b/cjs/index.js
index d37d85d..29130b9 100644
--- a/cjs/index.js
+++ b/cjs/index.js
@@ -1,6 +1,6 @@
 const Fastify = require("fastify");
 const { fastify } = require("fastify");
-const { default: fastifiDefault } = require("fastify");
+const { default: fastifyDefault } = require("fastify");
 
 const fastify1 = Fastify();
 
@@ -26,7 +26,7 @@ fastify2
     process.exit(1);
   });
 
-const fastify3 = fastifiDefault();
+const fastify3 = fastifyDefault();
 
 fastify2
   .listen(3002)
diff --git a/package.json b/package.json
index 17f2098..ba4bf2a 100644
--- a/package.json
+++ b/package.json
@@ -4,11 +4,12 @@
   "description": "",
   "main": "index.js",
   "scripts": {
-    "cjs": "node ./cjs",
-    "esm": "node ./esm/index.mjs",
-    "ts-interop-false": "tsc -p ./typescript/es-module-interop-false/tsconfig.json && node ./typescript/es-module-interop-false/build",
-    "ts-interop-true": "tsc -p ./typescript/es-module-interop-true/tsconfig.json && node ./typescript/es-module-interop-true/build",
-    "all": "run-p cjs esm ts-interop-false ts-interop-true"
+    "run:cjs": "node ./cjs",
+    "run:esm": "node ./esm/index.mjs",
+    "run:ts-interop-false": "tsc -p ./typescript/es-module-interop-false/tsconfig.json && node ./typescript/es-module-interop-false/build",
+    "run:ts-interop-true": "tsc -p ./typescript/es-module-interop-true/tsconfig.json && node ./typescript/es-module-interop-true/build",
+    "run:typed-cjs": "tsc -p ./typed-cjs/tsconfig.json && node ./cjs",
+    "all": "run-p run:*"
   },
   "repository": {
     "type": "git",
diff --git a/typed-cjs/index.js b/typed-cjs/index.js
new file mode 100644
index 0000000..29130b9
--- /dev/null
+++ b/typed-cjs/index.js
@@ -0,0 +1,39 @@
+const Fastify = require("fastify");
+const { fastify } = require("fastify");
+const { default: fastifyDefault } = require("fastify");
+
+const fastify1 = Fastify();
+
+fastify1
+  .listen(3000)
+  .then(() => {
+    console.log(`[CJS] module.exports is running.`);
+  })
+  .catch((err) => {
+    console.log(err);
+    process.exit(1);
+  });
+
+const fastify2 = fastify();
+
+fastify2
+  .listen(3001)
+  .then(() => {
+    console.log(`[CJS] named require is running.`);
+  })
+  .catch((err) => {
+    console.log(err);
+    process.exit(1);
+  });
+
+const fastify3 = fastifyDefault();
+
+fastify2
+  .listen(3002)
+  .then(() => {
+    console.log(`[CJS] default property require is running.`);
+  })
+  .catch((err) => {
+    console.log(err);
+    process.exit(1);
+  });
diff --git a/typed-cjs/tsconfig.json b/typed-cjs/tsconfig.json
new file mode 100644
index 0000000..d23292b
--- /dev/null
+++ b/typed-cjs/tsconfig.json
@@ -0,0 +1,11 @@
+{
+  "extends": "../tsconfig.json",
+  "compilerOptions": {
+    "allowJs": true,
+    "checkJs": true,
+    "noEmit": true,
+  },
+  "include": [
+    "./index.js"
+  ]
+}
\ No newline at end of file