diff --git a/index.js b/index.js
new file mode 100644
index 0000000..a754b9d
--- /dev/null
+++ b/index.js
@@ -0,0 +1,6 @@
+import { destroy, init, refresh } from './src/js/index-esm.js'
+const tocbot = { destroy, init, refresh }
+
+export { destroy, init, refresh }
+export default tocbot
+
diff --git a/index.mjs b/index.mjs
index c4ba4a2..a754b9d 100644
--- a/index.mjs
+++ b/index.mjs
@@ -3,3 +3,4 @@ const tocbot = { destroy, init, refresh }
 
 export { destroy, init, refresh }
 export default tocbot
+
diff --git a/package.json b/package.json
index baea842..144d501 100644
--- a/package.json
+++ b/package.json
@@ -3,13 +3,13 @@
   "version": "4.27.10",
   "description": "Generate a table of contents based on the heading structure of a html document.",
   "main": "./dist/tocbot.js",
-  "module": "./index.mjs",
+  "module": "./index.js",
   "exports": {
     ".": {
       "require": "./dist/tocbot.js",
-      "import": "./index.mjs",
+      "import": "./index.js",
       "types": "./index.d.ts",
-      "default": "./index.mjs"
+      "default": "./index.js"
     },
     "./styles.css": "./dist/styles.css",
     "./tocbot.css": "./dist/tocbot.css",