diff --git a/package.json b/package.json
index 51fad0c..21e71bc 100644
--- a/package.json
+++ b/package.json
@@ -1,8 +1,8 @@
 {
   "name": "s1-agents",
   "module": "src/index.ts",
-  "main": "dist/src/index.js",
-  "type": "module",
+  "main": "dist/index.js",
+  "types": "dist/src/index.d.ts",
   "author": "Gabriel Silvestre <gabriel.h.silvestre11@gmail.com>",
   "license": "MIT",
   "version": "0.3.1",
@@ -11,7 +11,7 @@
   ],
   "scripts": {
     "prebuild": "rm -rf dist",
-    "build": "rollup -c",
+    "build": "rollup -c rollup.config.js",
     "prepublish": "npm run build",
     "prepublishOnly": "bun test --coverage",
     "release": "standard-version",
diff --git a/rollup.config.cjs b/rollup.config.js
similarity index 100%
rename from rollup.config.cjs
rename to rollup.config.js
diff --git a/src/agents/function.ts b/src/agents/function.ts
index e94af2c..8af9060 100644
--- a/src/agents/function.ts
+++ b/src/agents/function.ts
@@ -18,7 +18,7 @@ export abstract class AgentFunction implements IFunction {
     log: false,
     schema: {
       output: false,
-      path: path.resolve(import.meta.dir, '../..', 'dist', 'openai-functions'),
+      path: path.resolve(__dirname, '../..', 'dist', 'openai-functions'),
     },
   };
 
@@ -88,13 +88,16 @@ export abstract class AgentFunction implements IFunction {
     );
     const schema = JSON.stringify(this.schema, null, 2);
 
-    const directoryAlreadyExists = await Bun.file(schemaPath).exists();
+    const directoryAlreadyExists = await fs
+      .access(path.dirname(schemaPath))
+      .then(() => true)
+      .catch(() => false);
     if (!directoryAlreadyExists) {
       await fs.mkdir(path.dirname(schemaPath), { recursive: true });
     }
 
     if (this._props.log) console.log(`Writing schema to ${schemaPath}`);
 
-    await Bun.write(schemaPath, schema);
+    await fs.writeFile(schemaPath, schema);
   }
 }