diff --git a/dist/index.js b/dist/index.js
index 1443cf9..bfc03ee 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -25,9 +25,10 @@ function newRidgeState(initialValue, options) {
         const pv = v;
         v = newValue instanceof Function ? newValue(v) : newValue;
         setTimeout(() => {
+            var _a;
             sb.forEach((c) => c(v, pv));
-            callback?.(v, pv);
-            options?.onSet?.(v, pv);
+            callback === null || callback === void 0 ? void 0 : callback(v, pv);
+            (_a = options === null || options === void 0 ? void 0 : options.onSet) === null || _a === void 0 ? void 0 : _a.call(options, v, pv);
         });
     }
     function subscribe(subscriber) {
diff --git a/package.json b/package.json
index f5970bd..6fa8fd6 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "react-ridge-state",
-  "version": "4.2.7",
+  "version": "4.2.8",
   "description": "react-ridge-state is a very simple global state management library for React and React Native",
   "type": "module",
   "main": "dist/index.js",
diff --git a/tsconfig.json b/tsconfig.json
index 312e669..426b312 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,7 +1,7 @@
 {
   "compilerOptions": {
     "module": "commonjs",
-    "target": "esnext",
+    "target": "es6",
     "declaration": true,
     "outDir": "./dist",
     "removeComments": true,