diff --git a/.github/renovate.json b/.github/renovate.json
index 0b44c69..a1cdefe 100644
--- a/.github/renovate.json
+++ b/.github/renovate.json
@@ -26,6 +26,10 @@
       "groupName": "eslint",
       "matchPackagePrefixes": ["@typescript-eslint/", "eslint"]
     },
+    {
+      "groupName": "prettier",
+      "matchPackagePrefixes": ["prettier"]
+    },
     {
       "groupName": "typescript",
       "matchPackageNames": ["typescript"]
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ed6276c..943ce6a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -28,6 +28,27 @@ jobs:
       - name: Lint
         run: npx eslint .
 
+  format:
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    name: 'Format: node-18, ubuntu-latest'
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Set node version to 18
+        uses: actions/setup-node@v3
+        with:
+          node-version: 18
+
+      - name: Install deps
+        run: npm install
+
+      - name: Format
+        run: npx prettier src --check
+
   ts-check-tests:
     runs-on: ubuntu-latest
     timeout-minutes: 10
diff --git a/.prettierrc.json b/.prettierrc.json
new file mode 100644
index 0000000..6e778b4
--- /dev/null
+++ b/.prettierrc.json
@@ -0,0 +1,4 @@
+{
+  "trailingComma": "all",
+  "singleQuote": true
+}
diff --git a/package-lock.json b/package-lock.json
index 0c7f418..d6d3783 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12,6 +12,7 @@
         "@typescript-eslint/eslint-plugin": "^5.59.11",
         "@typescript-eslint/parser": "^5.59.11",
         "eslint": "^8.42.0",
+        "prettier": "^3.0.3",
         "typescript": "~5.0.4"
       }
     },
@@ -1298,6 +1299,21 @@
         "node": ">= 0.8.0"
       }
     },
+    "node_modules/prettier": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.0.3.tgz",
+      "integrity": "sha512-L/4pUDMxcNa8R/EthV08Zt42WBO4h1rarVtK0K+QJG0X187OLo7l699jWw0GKuwzkPQ//jMFA/8Xm6Fh3J/DAg==",
+      "dev": true,
+      "bin": {
+        "prettier": "bin/prettier.cjs"
+      },
+      "engines": {
+        "node": ">=14"
+      },
+      "funding": {
+        "url": "https://github.com/prettier/prettier?sponsor=1"
+      }
+    },
     "node_modules/punycode": {
       "version": "2.3.0",
       "resolved": "https://registry.npmjs.org/punycode/-/punycode-2.3.0.tgz",
diff --git a/package.json b/package.json
index 5f2e168..c0bf94b 100644
--- a/package.json
+++ b/package.json
@@ -5,6 +5,7 @@
   "main": "dist/index.js",
   "scripts": {
     "build": "tsc",
+    "format": "prettier src --write",
     "lint": "eslint .",
     "lint:fix": "eslint . --fix"
   },
@@ -31,6 +32,7 @@
     "@typescript-eslint/eslint-plugin": "^5.59.11",
     "@typescript-eslint/parser": "^5.59.11",
     "eslint": "^8.42.0",
+    "prettier": "^3.0.3",
     "typescript": "~5.0.4"
   }
 }
diff --git a/src/index.ts b/src/index.ts
index bc28da1..3db3fd4 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1 +1 @@
-// todo write the application
\ No newline at end of file
+// todo write the application