diff --git a/Makefile b/Makefile
index 9e3d95c..aa13c6a 100644
--- a/Makefile
+++ b/Makefile
@@ -1,2 +1,2 @@
 wasm:
-	GOOS=js GOARCH=wasm tinygo build -o stats/mod.wasm ./stats/main.go
\ No newline at end of file
+	GOOS=js GOARCH=wasm tinygo build -o stat/mod.wasm ./stat/main.go
\ No newline at end of file
diff --git a/deno.json b/deno.json
new file mode 100644
index 0000000..5b320c2
--- /dev/null
+++ b/deno.json
@@ -0,0 +1,8 @@
+{
+  "tasks": {
+    "dev": "deno run --watch main.ts"
+  },
+  "imports": {
+    "@std/assert": "jsr:@std/assert@1"
+  }
+}
diff --git a/deno_tinygo_wasm.ipynb b/deno_tinygo_wasm.ipynb
index af66c31..6eac91d 100644
--- a/deno_tinygo_wasm.ipynb
+++ b/deno_tinygo_wasm.ipynb
@@ -2,22 +2,23 @@
  "cells": [
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": 1,
    "metadata": {},
    "outputs": [
     {
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "Estimated offset is: 1.010723\n",
-      "Estimated slope is:  2.999270\n",
-      "R^2: 0.999998\n"
+      "Stats initialized\n",
+      "Estimated offset is: 0.988572\n",
+      "Estimated slope is:  3.000154\n",
+      "R^2: 0.999999\n"
      ]
     }
    ],
    "source": [
-    "import stats from './stats/mod.ts';\n",
-    "stats.example()"
+    "import stats from \"./stat/mod.ts\";\n",
+    "stats.example();"
    ]
   }
  ],
diff --git a/main.ts b/main.ts
new file mode 100644
index 0000000..292ce5f
--- /dev/null
+++ b/main.ts
@@ -0,0 +1,8 @@
+export function add(a: number, b: number): number {
+  return a + b;
+}
+
+// Learn more at https://docs.deno.com/runtime/manual/examples/module_metadata#concepts
+if (import.meta.main) {
+  console.log("Add 2 + 3 =", add(2, 3));
+}
diff --git a/main_test.ts b/main_test.ts
new file mode 100644
index 0000000..3d981e9
--- /dev/null
+++ b/main_test.ts
@@ -0,0 +1,6 @@
+import { assertEquals } from "@std/assert";
+import { add } from "./main.ts";
+
+Deno.test(function addTest() {
+  assertEquals(add(2, 3), 5);
+});
diff --git a/stats/main.go b/stat/main.go
similarity index 100%
rename from stats/main.go
rename to stat/main.go
diff --git a/stats/mod.ts b/stat/mod.ts
similarity index 71%
rename from stats/mod.ts
rename to stat/mod.ts
index e6b5b36..02c81cf 100644
--- a/stats/mod.ts
+++ b/stat/mod.ts
@@ -1,10 +1,12 @@
 import "../lib/wasm.js";
 
+// @ts-expect-error: no types
 const go = new Go();
+
 const code =
   await (await fetch(import.meta.url.replace("/mod.ts", "/mod.wasm")))
     .arrayBuffer();
 const wasmMmodule = await WebAssembly.instantiate(code, go.importObject);
 const wasm = wasmMmodule.instance;
 go.run(wasm);
-export default wasm.exports;
+export default wasm.exports as Record<string, (...args: unknown[])=> unknown>;
diff --git a/stats/mod.wasm b/stat/mod.wasm
similarity index 99%
rename from stats/mod.wasm
rename to stat/mod.wasm
index e1a3f08..fbe5ba2 100755
Binary files a/stats/mod.wasm and b/stat/mod.wasm differ