diff --git a/Procfile b/Procfile
new file mode 100644
index 0000000..063b78f
--- /dev/null
+++ b/Procfile
@@ -0,0 +1 @@
+web: npm start
diff --git a/index.ts b/index.ts
index efd965a..c5aa108 100644
--- a/index.ts
+++ b/index.ts
@@ -43,6 +43,14 @@ const env = load({
     TEXT_RESPONSE_FAIL_CAPTCHA: String
 });
 
+interface Body {
+    "g-recaptcha-response"?: string,
+    "h-captcha-response"?: string,
+    "comment": string,
+    "email": string,
+    "name": string
+}
+
 const transporter = createTransport({
     host: env.MAIL_HOST ,
     port: env.MAIL_PORT,
@@ -59,8 +67,8 @@ api.register(cors, {
     optionsSuccessStatus: 200
 });
 
-api.post('/', async (request, response) => {
-    const recaptcha : string = request.body["g-recaptcha-response"] ?? request.body["h-captcha-response"];
+api.post<{Body: Body}>('/', async (request, response) => {
+    const recaptcha : string = request.body["g-recaptcha-response"] ?? request.body["h-captcha-response"] ?? '';
     const comment : string = request.body["comment"];
     const email : string = request.body["email"];
     const name : string = request.body["name"];
@@ -100,4 +108,4 @@ api.post('/', async (request, response) => {
     });
 });
 
-api.listen(env.PORT);
+api.listen(env.PORT, '0.0.0.0');
diff --git a/package.json b/package.json
index 96d68cd..80f9f6c 100644
--- a/package.json
+++ b/package.json
@@ -1,12 +1,11 @@
 {
   "name": "mail-send-api",
-  "version": "2.0.0",
+  "version": "2.0.1",
   "description": "free software to send mails with form using recaptcha using api request",
-  "main": "index.js",
+  "main": "dist/index.js",
   "scripts": {
-    "start": "node index.js",
-    "build": "tsc index.ts",
-    "postinstall": "npm run build;npm start"
+    "start": "node .",
+    "build": "tsc"
   },
   "repository": {
     "type": "git",
diff --git a/tsconfig.json b/tsconfig.json
new file mode 100644
index 0000000..26776f0
--- /dev/null
+++ b/tsconfig.json
@@ -0,0 +1,15 @@
+{
+    "compilerOptions": {
+      "baseUrl": "./",
+      "module": "commonjs",
+      "outDir": "./dist",
+      "strict": true,
+      "target": "ES2019",
+      "esModuleInterop": true,
+      "forceConsistentCasingInFileNames": true,
+      "removeComments": true,
+    },
+    "include": [
+      "./index.ts"
+    ]
+}