diff --git a/index.js b/index.js
new file mode 100644
index 0000000..d960afb
--- /dev/null
+++ b/index.js
@@ -0,0 +1,41 @@
+"use strict";
+/**
+ * @example
+ * // should return player1 (the winner)
+ * rockpaperscissors(2, 1)
+ * @example
+ * // should return tie (it's a tie)
+ * rockpaperscissors(1, 1)
+ * @description Main function, you need to pass 2 numbers.
+ * @param {number} player1 1 for rock, 2 for paper, 3 for scissors
+ * @param {number} player2 1 for rock, 2 for paper, 3 for scissors
+ * @returns {string} either "player1", "player2" (whoever won) or "tie" for a tie.
+ */
+exports.__esModule = true;
+function rockpaperscissors(player1, player2) {
+    if (player1 === player2) {
+        return "tie";
+    }
+    else if (player1 === 1 && player2 === 2) {
+        return "player2";
+    }
+    else if (player1 === 2 && player2 === 1) {
+        return "player1";
+    }
+    else if (player1 === 1 && player2 === 3) {
+        return "player1";
+    }
+    else if (player1 === 3 && player2 === 1) {
+        return "player2";
+    }
+    else if (player1 === 2 && player2 === 3) {
+        return "player2";
+    }
+    else if (player1 === 3 && player2 === 2) {
+        return "player1";
+    }
+    else {
+        throw new Error("Make sure player1 and player2 have right numbers.");
+    }
+}
+exports["default"] = rockpaperscissors;
diff --git a/package.json b/package.json
index d2cc3d0..cb4c442 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "rockpaperscissors-checker",
-  "version": "1.1.1",
+  "version": "1.1.2",
   "description": "check for ties and wins on rockpaperscissors",
   "main": "index.js",
   "scripts": {