diff --git a/example/todo-list/astro.config.mjs b/example/todo-list/astro.config.mjs
index 00da8cf..3fb1a4a 100644
--- a/example/todo-list/astro.config.mjs
+++ b/example/todo-list/astro.config.mjs
@@ -14,8 +14,8 @@ export default defineConfig({
     apiClientGenerator({
       // example for CodeSandbox
       site: process.env.IS_SANDBOX
-        ? `https://${hostname()}--3000.local-credentialless.webcontainer.io`
-        : 'http://localhost:3000',
+        ? `https://${hostname()}--4321.local-credentialless.webcontainer.io`
+        : 'http://localhost:4321',
     }),
   ],
 })
diff --git a/example/todo-list/package.json b/example/todo-list/package.json
index bb4edc0..58e3536 100644
--- a/example/todo-list/package.json
+++ b/example/todo-list/package.json
@@ -12,6 +12,6 @@
   "dependencies": {
     "astro": "^4.1.2",
     "@astrojs/node": "^7.0.4",
-    "@jsheaven/astro-client-generator": "1.0.10"
+    "@jsheaven/astro-client-generator": "1.1.0"
   }
 }
diff --git a/example/todo-list/src/pages/api-client/create-todo-client.ts b/example/todo-list/src/pages/api-client/create-todo-client.ts
index c99eb6e..e44eb7c 100644
--- a/example/todo-list/src/pages/api-client/create-todo-client.ts
+++ b/example/todo-list/src/pages/api-client/create-todo-client.ts
@@ -1,5 +1,5 @@
-import { APIRoute } from 'astro'
-import { Todo } from '../../model/Todo'
+import { type APIRoute } from 'astro'
+import { type Todo } from '../../model/Todo'
 import { readFile, writeFile } from 'fs/promises'
 
 
@@ -25,7 +25,7 @@ export interface ApiResponse {
 
 /** return (await fetch('/api/create-todo', { method: 'POST', ... })).json() */
 export const createTodo = async(payload: ApiRequest, options: RequestOptions = {}): Promise<ApiResponse> => {
-  let requestUrl = 'http://localhost:3000/api/create-todo'
+  let requestUrl = 'http://localhost:4321/api/create-todo'
   if (options && options.query) {
     requestUrl += '?' + Object.keys(options.query)
         .map((key) => key + '=' + options.query![key])
diff --git a/example/todo-list/src/pages/api-client/get-todos-client.ts b/example/todo-list/src/pages/api-client/get-todos-client.ts
index 6b68244..cf3a39d 100644
--- a/example/todo-list/src/pages/api-client/get-todos-client.ts
+++ b/example/todo-list/src/pages/api-client/get-todos-client.ts
@@ -1,5 +1,5 @@
-import { APIRoute } from 'astro'
-import { Todo } from '../../model/Todo'
+import { type APIRoute } from 'astro'
+import { type Todo } from '../../model/Todo'
 import { readFile } from 'fs/promises'
 
 
@@ -25,7 +25,7 @@ export interface ApiResponse {
 
 /** return (await fetch('/api/get-todos', { method: 'GET', ... })).json() */
 export const getTodos = async(options: RequestOptions = {}): Promise<ApiResponse> => {
-  let requestUrl = 'http://localhost:3000/api/get-todos'
+  let requestUrl = 'http://localhost:4321/api/get-todos'
   if (options && options.query) {
     requestUrl += '?' + Object.keys(options.query)
         .map((key) => key + '=' + options.query![key])
diff --git a/example/todo-list/src/pages/api-client/remove-todo-client.ts b/example/todo-list/src/pages/api-client/remove-todo-client.ts
index 745508a..302e98d 100644
--- a/example/todo-list/src/pages/api-client/remove-todo-client.ts
+++ b/example/todo-list/src/pages/api-client/remove-todo-client.ts
@@ -1,5 +1,5 @@
-import { APIContext, APIRoute } from 'astro'
-import { Todo } from '../../model/Todo'
+import { type APIContext, type APIRoute } from 'astro'
+import { type Todo } from '../../model/Todo'
 import { readFile, writeFile } from 'fs/promises'
 
 
@@ -27,7 +27,7 @@ export interface ApiResponse {
 
 /** return (await fetch('/api/remove-todo', { method: 'DELETE', ... })).json() */
 export const removeTodo = async(payload: ApiRequest, options: RequestOptions = {}): Promise<ApiResponse> => {
-  let requestUrl = 'http://localhost:3000/api/remove-todo'
+  let requestUrl = 'http://localhost:4321/api/remove-todo'
   if (options && options.query) {
     requestUrl += '?' + Object.keys(options.query)
         .map((key) => key + '=' + options.query![key])
diff --git a/example/todo-list/src/pages/api-client/update-todo-client.ts b/example/todo-list/src/pages/api-client/update-todo-client.ts
index d4c541f..02c716d 100644
--- a/example/todo-list/src/pages/api-client/update-todo-client.ts
+++ b/example/todo-list/src/pages/api-client/update-todo-client.ts
@@ -1,5 +1,5 @@
-import { APIContext, APIRoute } from 'astro'
-import { Todo } from '../../model/Todo'
+import { type APIContext, type APIRoute } from 'astro'
+import { type Todo } from '../../model/Todo'
 import { readFile, writeFile } from 'fs/promises'
 
 
@@ -25,7 +25,7 @@ export interface ApiResponse {
 
 /** return (await fetch('/api/update-todo', { method: 'PATCH', ... })).json() */
 export const updateTodo = async(payload: ApiRequest, options: RequestOptions = {}): Promise<ApiResponse> => {
-  let requestUrl = 'http://localhost:3000/api/update-todo'
+  let requestUrl = 'http://localhost:4321/api/update-todo'
   if (options && options.query) {
     requestUrl += '?' + Object.keys(options.query)
         .map((key) => key + '=' + options.query![key])
diff --git a/example/todo-list/src/pages/api/create-todo.ts b/example/todo-list/src/pages/api/create-todo.ts
index 01ae055..5e433c9 100644
--- a/example/todo-list/src/pages/api/create-todo.ts
+++ b/example/todo-list/src/pages/api/create-todo.ts
@@ -1,5 +1,5 @@
-import { APIRoute } from 'astro'
-import { Todo } from '../../model/Todo'
+import { type APIRoute } from 'astro'
+import { type Todo } from '../../model/Todo'
 import { readFile, writeFile } from 'fs/promises'
 
 export interface ApiResponse {
diff --git a/example/todo-list/src/pages/api/get-todos.ts b/example/todo-list/src/pages/api/get-todos.ts
index 5ec9ecb..812f488 100644
--- a/example/todo-list/src/pages/api/get-todos.ts
+++ b/example/todo-list/src/pages/api/get-todos.ts
@@ -1,5 +1,5 @@
-import { APIRoute } from 'astro'
-import { Todo } from '../../model/Todo'
+import { type APIRoute } from 'astro'
+import { type Todo } from '../../model/Todo'
 import { readFile } from 'fs/promises'
 
 export interface ApiResponse {
diff --git a/example/todo-list/src/pages/api/remove-todo.ts b/example/todo-list/src/pages/api/remove-todo.ts
index 1c8b9c3..8dae1b3 100644
--- a/example/todo-list/src/pages/api/remove-todo.ts
+++ b/example/todo-list/src/pages/api/remove-todo.ts
@@ -1,5 +1,5 @@
-import { APIContext, APIRoute } from 'astro'
-import { Todo } from '../../model/Todo'
+import { type APIContext, type APIRoute } from 'astro'
+import { type Todo } from '../../model/Todo'
 import { readFile, writeFile } from 'fs/promises'
 
 export interface ApiResponse {
diff --git a/example/todo-list/src/pages/api/update-todo.ts b/example/todo-list/src/pages/api/update-todo.ts
index bba127f..63863af 100644
--- a/example/todo-list/src/pages/api/update-todo.ts
+++ b/example/todo-list/src/pages/api/update-todo.ts
@@ -1,5 +1,5 @@
-import { APIContext, APIRoute } from 'astro'
-import { Todo } from '../../model/Todo'
+import { type APIContext, type APIRoute } from 'astro'
+import { type Todo } from '../../model/Todo'
 import { readFile, writeFile } from 'fs/promises'
 
 export interface ApiResponse {
diff --git a/example/todo-list/yarn.lock b/example/todo-list/yarn.lock
index f8ef9f9..20d667a 100644
--- a/example/todo-list/yarn.lock
+++ b/example/todo-list/yarn.lock
@@ -475,13 +475,13 @@
     "@jridgewell/resolve-uri" "3.1.0"
     "@jridgewell/sourcemap-codec" "1.4.14"
 
-"@jsheaven/astro-client-generator@1.0.10":
-  version "1.0.10"
-  resolved "https://registry.yarnpkg.com/@jsheaven/astro-client-generator/-/astro-client-generator-1.0.10.tgz#f77ce8bcdb1456adf5196837acc715a8540872cd"
-  integrity sha512-Cu45oRnmATj0Dx3gfzlfBACpLXT0yfypl7/0t1R2ARGBaC6bOqBZlsLWdWctQxageeb19P/eqk93GZ6vYpDw2Q==
+"@jsheaven/astro-client-generator@1.1.0":
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/@jsheaven/astro-client-generator/-/astro-client-generator-1.1.0.tgz#d27be4b1f6bb7672aa682a83f904f8f4f64b6409"
+  integrity sha512-1ts+ZibGWz6Jme4R8Rq3hgJypUhwWotZY4DxFKr4T6tkJ8w99RShrhBnJK21mWKAyMJBuOKMf8Xfvk3LllZFhg==
   dependencies:
     kleur "^4.1.5"
-    ts-morph "^17.0.1"
+    ts-morph "^21.0.1"
     yargs-parser "^21.1.1"
 
 "@nodelib/fs.scandir@2.1.5":
@@ -570,14 +570,14 @@
   resolved "https://registry.yarnpkg.com/@rollup/rollup-win32-x64-msvc/-/rollup-win32-x64-msvc-4.9.4.tgz#16295ccae354707c9bc6842906bdeaad4f3ba7a5"
   integrity sha512-LfdGXCV9rdEify1oxlN9eamvDSjv9md9ZVMAbNHA87xqIfFCxImxan9qZ8+Un54iK2nnqPlbnSi4R54ONtbWBw==
 
-"@ts-morph/common@~0.18.0":
-  version "0.18.1"
-  resolved "https://registry.yarnpkg.com/@ts-morph/common/-/common-0.18.1.tgz#ca40c3a62c3f9e17142e0af42633ad63efbae0ec"
-  integrity sha512-RVE+zSRICWRsfrkAw5qCAK+4ZH9kwEFv5h0+/YeHTLieWP7F4wWq4JsKFuNWG+fYh/KF+8rAtgdj5zb2mm+DVA==
+"@ts-morph/common@~0.22.0":
+  version "0.22.0"
+  resolved "https://registry.yarnpkg.com/@ts-morph/common/-/common-0.22.0.tgz#8951d451622a26472fbc3a227d6c3a90e687a683"
+  integrity sha512-HqNBuV/oIlMKdkLshXd1zKBqNQCsuPEsgQOkfFQ/eUKjRlwndXW1AjN9LVkBEIukm00gGXSRmfkl0Wv5VXLnlw==
   dependencies:
-    fast-glob "^3.2.12"
-    minimatch "^5.1.0"
-    mkdirp "^1.0.4"
+    fast-glob "^3.3.2"
+    minimatch "^9.0.3"
+    mkdirp "^3.0.1"
     path-browserify "^1.0.1"
 
 "@types/babel__core@^7.20.4":
@@ -1018,10 +1018,10 @@ clsx@^2.0.0:
   resolved "https://registry.yarnpkg.com/clsx/-/clsx-2.1.0.tgz#e851283bcb5c80ee7608db18487433f7b23f77cb"
   integrity sha512-m3iNNWpd9rl3jvvcBnu70ylMdrXt8Vlq4HYadnU5fwcOtvkSQWPmj7amUcDT2qYI7risszBjI5AUIUox9D16pg==
 
-code-block-writer@^11.0.3:
-  version "11.0.3"
-  resolved "https://registry.yarnpkg.com/code-block-writer/-/code-block-writer-11.0.3.tgz#9eec2993edfb79bfae845fbc093758c0a0b73b76"
-  integrity sha512-NiujjUFB4SwScJq2bwbYUtXbZhBSlY6vYzm++3Q6oC+U+injTqfPYFK8wS9COOmb2lueqp0ZRB4nK1VYeHgNyw==
+code-block-writer@^12.0.0:
+  version "12.0.0"
+  resolved "https://registry.yarnpkg.com/code-block-writer/-/code-block-writer-12.0.0.tgz#4dd58946eb4234105aff7f0035977b2afdc2a770"
+  integrity sha512-q4dMFMlXtKR3XNBHyMHt/3pwYNA69EDk00lloMOaaUMKPUXBw6lpXtbu3MMVG6/uOihGnRDOlkyqsONEUj60+w==
 
 color-convert@^1.9.0:
   version "1.9.3"
@@ -1351,17 +1351,6 @@ fast-fifo@^1.1.0, fast-fifo@^1.2.0:
   resolved "https://registry.yarnpkg.com/fast-fifo/-/fast-fifo-1.3.2.tgz#286e31de96eb96d38a97899815740ba2a4f3640c"
   integrity sha512-/d9sfos4yxzpwkDkuN7k2SqFKtYNmCTzgfEpz82x34IM9/zc8KGxQoXg1liNC/izpRM/MBdt44Nmx41ZWqk+FQ==
 
-fast-glob@^3.2.12:
-  version "3.2.12"
-  resolved "https://registry.yarnpkg.com/fast-glob/-/fast-glob-3.2.12.tgz#7f39ec99c2e6ab030337142da9e0c18f37afae80"
-  integrity sha512-DVj4CQIYYow0BlaelwK1pHl5n5cRSJfM60UA0zK891sVInoPri2Ekj7+e1CT3/3qxXenpI+nBBmQAcJPJgaj4w==
-  dependencies:
-    "@nodelib/fs.stat" "^2.0.2"
-    "@nodelib/fs.walk" "^1.2.3"
-    glob-parent "^5.1.2"
-    merge2 "^1.3.0"
-    micromatch "^4.0.4"
-
 fast-glob@^3.3.2:
   version "3.3.2"
   resolved "https://registry.yarnpkg.com/fast-glob/-/fast-glob-3.3.2.tgz#a904501e57cfdd2ffcded45e99a54fef55e46129"
@@ -2348,10 +2337,10 @@ mimic-response@^3.1.0:
   resolved "https://registry.yarnpkg.com/mimic-response/-/mimic-response-3.1.0.tgz#2d1d59af9c1b129815accc2c46a022a5ce1fa3c9"
   integrity sha512-z0yWI+4FDrrweS8Zmt4Ej5HdJmky15+L2e6Wgn3+iK5fWzb6T3fhNFq2+MeTRb064c6Wr4N/wv0DzQTjNzHNGQ==
 
-minimatch@^5.1.0:
-  version "5.1.6"
-  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-5.1.6.tgz#1cfcb8cf5522ea69952cd2af95ae09477f122a96"
-  integrity sha512-lKwV/1brpG6mBUFHtb7NUmtABCb2WZZmm2wNiOA5hAb8VdCS4B3dtMWyvcoViccwAW/COERjXLt0zP1zXUN26g==
+minimatch@^9.0.3:
+  version "9.0.3"
+  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-9.0.3.tgz#a6e00c3de44c3a542bfaae70abfc22420a6da825"
+  integrity sha512-RHiac9mvaRw0x3AYRgDC1CxAP7HTcNrrECeA8YYJeWnpo+2Q5CegtZjaotWTWxDG3UeGA1coE05iH1mPjT/2mg==
   dependencies:
     brace-expansion "^2.0.1"
 
@@ -2365,10 +2354,10 @@ mkdirp-classic@^0.5.2, mkdirp-classic@^0.5.3:
   resolved "https://registry.yarnpkg.com/mkdirp-classic/-/mkdirp-classic-0.5.3.tgz#fa10c9115cc6d8865be221ba47ee9bed78601113"
   integrity sha512-gKLcREMhtuZRwRAfqP3RFW+TK4JqApVBtOIftVgjuABpAtpxhPGaDcfvbhNvD0B8iD1oUr/txX35NjcaY6Ns/A==
 
-mkdirp@^1.0.4:
-  version "1.0.4"
-  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-1.0.4.tgz#3eb5ed62622756d79a5f0e2a221dfebad75c2f7e"
-  integrity sha512-vVqVZQyf3WLx2Shd0qJ9xuvqgAyKPLAiqITEtqW0oIUjzo3PePDd6fW9iFz30ef7Ysp/oiWqbhszeGWW2T6Gzw==
+mkdirp@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-3.0.1.tgz#e44e4c5607fb279c168241713cc6e0fea9adcb50"
+  integrity sha512-+NsyUUAZDmo6YVHzL/stxSu3t9YS1iljliy3BSDrXJ/dkn1KYdmtZODGGjLcc9XLgVVpH4KshHB8XmZgMhaBXg==
 
 ms@2.0.0:
   version "2.0.0"
@@ -3249,13 +3238,13 @@ trough@^2.0.0:
   resolved "https://registry.yarnpkg.com/trough/-/trough-2.1.0.tgz#0f7b511a4fde65a46f18477ab38849b22c554876"
   integrity sha512-AqTiAOLcj85xS7vQ8QkAV41hPDIJ71XJB4RCUrzo/1GM2CQwhkJGaf9Hgr7BOugMRpgGUrqRg/DrBDl4H40+8g==
 
-ts-morph@^17.0.1:
-  version "17.0.1"
-  resolved "https://registry.yarnpkg.com/ts-morph/-/ts-morph-17.0.1.tgz#d85df4fcf9a1fcda1b331d52c00655f381c932d1"
-  integrity sha512-10PkHyXmrtsTvZSL+cqtJLTgFXkU43Gd0JCc0Rw6GchWbqKe0Rwgt1v3ouobTZwQzF1mGhDeAlWYBMGRV7y+3g==
+ts-morph@^21.0.1:
+  version "21.0.1"
+  resolved "https://registry.yarnpkg.com/ts-morph/-/ts-morph-21.0.1.tgz#712302a0f6e9dbf1aa8d9cf33a4386c4b18c2006"
+  integrity sha512-dbDtVdEAncKctzrVZ+Nr7kHpHkv+0JDJb2MjjpBaj8bFeCkePU9rHfMklmhuLFnpeq/EJZk2IhStY6NzqgjOkg==
   dependencies:
-    "@ts-morph/common" "~0.18.0"
-    code-block-writer "^11.0.3"
+    "@ts-morph/common" "~0.22.0"
+    code-block-writer "^12.0.0"
 
 tsconfck@^3.0.0:
   version "3.0.1"
diff --git a/package.json b/package.json
index 343ccca..7c277b2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@jsheaven/astro-client-generator",
-  "version": "1.1.0",
+  "version": "1.1.1",
   "type": "module",
   "publishConfig": {
     "access": "public"
diff --git a/src/index.ts b/src/index.ts
index 06c0b5f..ae409ff 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -340,8 +340,29 @@ export const generateClientApis = (apiGeneratorOptions: ApiClientGeneratorOption
     const clientFileDir = parsed.dir
     const finalFilePath = `${clientFileDir}${sep}${parsed.name}-client.ts`
 
+    const project = new Project({
+      tsConfigFilePath: apiGeneratorOptions.tsConfigPath,
+    })
+
     mkdirSync(clientFileDir, { recursive: true })
-    writeFileSync(finalFilePath.toLowerCase(), clientCode, { encoding: 'utf-8' })
+
+
+    // refactor
+    const sourceFile = project.createSourceFile(finalFilePath.toLowerCase(), clientCode, {
+      overwrite: true,
+    })
+
+    let lastWidth: number;
+    do {
+        lastWidth = sourceFile.getFullWidth();
+        sourceFile.fixUnusedIdentifiers();
+    } while (lastWidth !== sourceFile.getFullWidth());
+
+    sourceFile.organizeImports();
+    sourceFile.formatText();
+    sourceFile.saveSync();
+
+    //writeFileSync(finalFilePath.toLowerCase(), clientCode, { encoding: 'utf-8' })
   })
 }