diff --git a/src/import.ts b/src/import.ts
index 1486971..9d9da38 100644
--- a/src/import.ts
+++ b/src/import.ts
@@ -178,6 +178,9 @@ export function importResolve(filepath: string, options?: ImportResolveOptions)
         // resolve will return file:// URL on Linux and MacOS expect on Windows
         moduleFilePath = fileURLToPath(moduleFilePath);
       }
+      if (!fs.existsSync(moduleFilePath)) {
+        throw new TypeError(`Cannot find module ${filepath}, because ${moduleFilePath} does not exists`);
+      }
     } else {
       moduleFilePath = getRequire().resolve(filepath);
     }
@@ -188,7 +191,8 @@ export function importResolve(filepath: string, options?: ImportResolveOptions)
       paths,
     });
   }
-  debug('[importResolve] %o, options: %o => %o', filepath, options, moduleFilePath);
+  debug('[importResolve] %o, options: %o => %o, isESM: %s',
+    filepath, options, moduleFilePath, isESM);
   return moduleFilePath;
 }
 
@@ -198,9 +202,8 @@ export async function importModule(filepath: string, options?: ImportModuleOptio
   if (isESM) {
     // esm
     const fileUrl = pathToFileURL(moduleFilePath).toString();
-    debug('[importModule] await import start: %o', fileUrl);
     obj = await import(fileUrl);
-    debug('[importModule] await import end: %o => %o', filepath, obj);
+    debug('[importModule] await import %o', fileUrl);
     // {
     //   default: { foo: 'bar', one: 1 },
     //   foo: 'bar',
@@ -243,7 +246,7 @@ export async function importModule(filepath: string, options?: ImportModuleOptio
   } else {
     // commonjs
     obj = require(moduleFilePath);
-    debug('[importModule] require %o => %o', filepath, obj);
+    debug('[importModule] require %o', moduleFilePath);
     if (obj?.__esModule === true && 'default' in obj) {
       // 兼容 cjs 模拟 esm 的导出格式
       // {
@@ -253,6 +256,8 @@ export async function importModule(filepath: string, options?: ImportModuleOptio
       obj = obj.default;
     }
   }
-  debug('[importModule] return %o => %o', filepath, obj);
+  if (debug.enabled) {
+    debug('[importModule] return %o => keys: %j', filepath, obj ? Object.keys(obj) : obj);
+  }
   return obj;
 }
diff --git a/test/fixtures/egg-app/package.json b/test/fixtures/egg-app/package.json
index d2923b3..bf00e68 100644
--- a/test/fixtures/egg-app/package.json
+++ b/test/fixtures/egg-app/package.json
@@ -1,8 +1,8 @@
 {
   "name": "egg-app",
   "dependencies": {
-    "egg": "*",
-    "@eggjs/core": "*",
+    "egg": "beta",
+    "@eggjs/core": "6",
     "framework-demo": "^1.0.1"
   }
 }
diff --git a/test/fixtures/esm/config/plugin.js b/test/fixtures/esm/config/plugin.js
new file mode 100644
index 0000000..5532a6a
--- /dev/null
+++ b/test/fixtures/esm/config/plugin.js
@@ -0,0 +1,3 @@
+export default {
+  foo: 'bar',
+};
diff --git a/test/import.test.ts b/test/import.test.ts
index d35d6a3..5d440fc 100644
--- a/test/import.test.ts
+++ b/test/import.test.ts
@@ -11,6 +11,10 @@ describe('test/import.test.ts', () => {
 
     it('should work on esm', () => {
       assert.equal(importResolve(getFilepath('esm')), getFilepath('esm/index.js'));
+      assert.equal(importResolve(getFilepath('esm/config/plugin')), getFilepath('esm/config/plugin.js'));
+      assert.throws(() => {
+        importResolve(getFilepath('esm/config/plugin.default'));
+      }, /Cannot find module/);
     });
 
     it('should work on ts-module', () => {