diff --git a/packages/iframe-bridge/src/client.ts b/packages/iframe-bridge/src/client.ts
index 628101c..491294b 100644
--- a/packages/iframe-bridge/src/client.ts
+++ b/packages/iframe-bridge/src/client.ts
@@ -4,9 +4,9 @@
  * - 提供便捷的客户端调用：navigate/close/ready
  */
 import { connectToParent } from 'penpal';
-import type { HostApi, ChildApi } from './types';
-import { isEmbedded } from './path';
-import { log } from './logger';
+import type { HostApi, ChildApi } from './types.js';
+import { isEmbedded } from './path.js';
+import { log } from './logger.js';
 
 // Cached Penpal connections
 // 缓存与宿主的连接，以避免重复握手
diff --git a/packages/iframe-bridge/src/host.ts b/packages/iframe-bridge/src/host.ts
index 2458de1..bf61fa3 100644
--- a/packages/iframe-bridge/src/host.ts
+++ b/packages/iframe-bridge/src/host.ts
@@ -4,8 +4,8 @@
  * - 返回 child Promise（解析为子端暴露的方法）与 destroy 销毁函数
  */
 import { connectToChild } from 'penpal';
-import type { HostApi, ChildApi } from './types';
-import { log } from './logger';
+import type { HostApi, ChildApi } from './types.js';
+import { log } from './logger.js';
 
 /** Establish Penpal host bridge bound to an iframe and expose Host API to child. */
 /**
diff --git a/packages/iframe-bridge/src/index.ts b/packages/iframe-bridge/src/index.ts
index fa50121..c9d66a3 100644
--- a/packages/iframe-bridge/src/index.ts
+++ b/packages/iframe-bridge/src/index.ts
@@ -1,27 +1,27 @@
 // 入口文件：仅聚合与导出 API，不承载具体逻辑
-export type { HostApi, ChildApi } from './types';
-export { isEmbedded, toHostPath, toChildPath } from './path';
+export type { HostApi, ChildApi } from './types.js';
+export { isEmbedded, toHostPath, toChildPath } from './path.js';
 export {
   getClientHostApi,
   clientNavigate,
   clientClose,
   clientReady,
   initChildBridge,
-} from './client';
-export { createPenpalHostBridge } from './host';
+} from './client.js';
+export { createPenpalHostBridge } from './host.js';
 
 // 默认导出一个聚合对象：
 // - 兼容某些只识别 default 的打包方案或联邦场景
 // - 同时保留命名导出，建议优先使用命名导出
-import { isEmbedded, toHostPath, toChildPath } from './path';
+import { isEmbedded, toHostPath, toChildPath } from './path.js';
 import {
   getClientHostApi,
   clientNavigate,
   clientClose,
   clientReady,
   initChildBridge,
-} from './client';
-import { createPenpalHostBridge } from './host';
+} from './client.js';
+import { createPenpalHostBridge } from './host.js';
 
 /**
  * 默认聚合导出对象：包含全部对外 API。
diff --git a/packages/iframe-bridge/src/path.ts b/packages/iframe-bridge/src/path.ts
index 827661c..0e57055 100644
--- a/packages/iframe-bridge/src/path.ts
+++ b/packages/iframe-bridge/src/path.ts
@@ -3,7 +3,7 @@
  * - 判断是否处于 iframe 场景（需进行跨窗口通信）
  * - 提供宿主/子端路径的前缀转换
  */
-import { log } from './logger';
+import { log } from './logger.js';
 
 /**
  * 安全获取当前窗口的 pathname，避免跨域等异常导致报错。
diff --git a/packages/iframe-bridge/tsconfig.json b/packages/iframe-bridge/tsconfig.json
index b001f64..9daeb46 100644
--- a/packages/iframe-bridge/tsconfig.json
+++ b/packages/iframe-bridge/tsconfig.json
@@ -1,6 +1,9 @@
 {
   "extends": "../../tsconfig.node.json",
   "compilerOptions": {
+    "module": "NodeNext",
+    "moduleResolution": "NodeNext",
+    "verbatimModuleSyntax": false,
     "outDir": "dist",
     "rootDir": "src",
     "tsBuildInfoFile": "./dist/.tsbuildinfo",