diff --git a/import-map.js b/importmap.js
similarity index 87%
rename from import-map.js
rename to importmap.js
index ceeca2a..457dd32 100644
--- a/import-map.js
+++ b/importmap.js
@@ -1,7 +1,7 @@
-// 生成缓存键，基于当前模块的URL
 const getCacheKey = () => {
-  const url = new URL(import.meta.url);
-  const basePath = url.pathname.replace('/import-map.js', '');
+  // 基于import map文件的路径，而不是当前模块的URL
+  const url = new URL('./imports.json', window.location.href);
+  const basePath = url.pathname.replace('/imports.json', '');
   return `importMap_${btoa(basePath).replace(/[+/=]/g, '_')}`;
 };
 const getCurrentScriptData = () => {
@@ -121,8 +121,17 @@ export const updateCacheInBackground = async () => {
 };
 
 const runMain = async () => {
-  const { render } = await import('main');
-  render();
+  const sourceCode = `
+  import { render } from 'main';
+  render();`;
+  try {
+    const script = document.createElement('script');
+    script.type = 'module';
+    script.textContent = sourceCode;
+    document.body.appendChild(script);
+  } catch (error) {
+    console.error('Error executing source code:', error);
+  }
 };
 
 const main = async () => {
diff --git a/package.json b/package.json
index 28613de..2f87463 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@kevisual/native",
-  "version": "0.0.1",
+  "version": "0.0.4",
   "description": "",
   "main": "index.js",
   "files": [
diff --git a/readme.md b/readme.md
new file mode 100644
index 0000000..ae4ed4d
--- /dev/null
+++ b/readme.md
@@ -0,0 +1,3 @@
+# native
+
+esm 很有用，原生package.js 可以更好的支持。
\ No newline at end of file