diff --git a/package.json b/package.json
index 6adb55c..04941cc 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@kevisual/oss",
-  "version": "0.0.1",
+  "version": "0.0.5",
   "description": "",
   "main": "dist/index.js",
   "scripts": {
@@ -16,13 +16,23 @@
   "license": "MIT",
   "type": "module",
   "devDependencies": {
-    "dotenv": "^16.4.7",
+    "dotenv": "^16.5.0",
     "minio": "^8.0.5",
     "tsup": "^8.4.0"
   },
   "exports": {
-    "./*": "./dist/*.js",
-    "./services": "./dist/services/index.js"
+    ".": {
+      "import": "./dist/index.js",
+      "types": "./dist/index.d.ts"
+    },
+    "./config": {
+      "import": "./dist/services/config.js",
+      "types": "./dist/services/config.d.ts"
+    },
+    "./services": {
+      "import": "./dist/services/index.js",
+      "types": "./dist/services/index.d.ts"
+    }
   },
   "publishConfig": {
     "access": "public"
diff --git a/src/core/copy-object.ts b/src/core/copy-object.ts
index bd397b6..7c99377 100644
--- a/src/core/copy-object.ts
+++ b/src/core/copy-object.ts
@@ -3,7 +3,7 @@ import { Client, CopyDestinationOptions, CopySourceOptions } from 'minio';
 type CopyObjectOpts = {
   bucketName: string;
   newMetadata: Record<string, string>;
-  prefix: string;
+  objectName: string;
   client: Client;
 };
 /**
@@ -11,12 +11,14 @@ type CopyObjectOpts = {
  * @param param0
  * @returns
  */
-export const copyObject = async ({ bucketName, newMetadata, prefix, client }: CopyObjectOpts) => {
-  const source = new CopySourceOptions({ Bucket: bucketName, Object: prefix });
+export const copyObject = async ({ bucketName, newMetadata, objectName, client }: CopyObjectOpts) => {
+  const source = new CopySourceOptions({ Bucket: bucketName, Object: objectName });
+  const stat = await client.statObject(bucketName, objectName);
+  const sourceMetadata = stat.metaData;
   const destination = new CopyDestinationOptions({
     Bucket: bucketName,
-    Object: prefix,
-    UserMetadata: newMetadata,
+    Object: objectName,
+    UserMetadata: { ...sourceMetadata, ...newMetadata },
     MetadataDirective: 'REPLACE',
   });
   const copyResult = await client.copyObject(source, destination);
diff --git a/src/index.ts b/src/index.ts
index b562cb8..9eaf6df 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,12 +1,13 @@
 import { Client, ItemBucketMetadata } from 'minio';
 import { ListFileObject, ListObjectResult, OssBaseOperation } from './core/type.ts';
 import { hash } from './util/hash.ts';
+import { copyObject } from './core/copy-object.ts';
 
 export type OssBaseOptions<T = { [key: string]: any }> = {
   /**
    * 已经初始化好的minio client
    */
-  client?: Client;
+  client: Client;
   /**
    * 桶名
    */
@@ -31,7 +32,7 @@ export class OssBase implements OssBaseOperation {
     }
     this.bucketName = opts.bucketName;
     this.client = opts.client;
-    this.prefix = opts.prefix;
+    this.prefix = opts?.prefix ?? '';
   }
 
   setPrefix(prefix: string) {
@@ -64,15 +65,36 @@ export class OssBase implements OssBaseOperation {
       });
     });
   }
-
-  async putObject(objectName: string, data: Buffer | string | Object, metaData?: ItemBucketMetadata) {
+  /**
+   * 上传文件,
+   * @param objectName
+   * @param data
+   * @param metaData
+   * @param options 如果文件本身存在，则复制原有的meta的内容
+   * @returns
+   */
+  async putObject(objectName: string, data: Buffer | string | Object, metaData: ItemBucketMetadata = {}, options?: { check?: boolean }) {
     let putData: Buffer | string;
+    let size: number;
     if (typeof data === 'object') {
       putData = JSON.stringify(data);
+      size = putData.length;
+    } else if (typeof data === 'string') {
+      putData = data;
+      size = putData.length;
     } else {
       putData = data;
     }
-    const size = putData.length;
+    if (options?.check) {
+      const obj = await this.statObject(objectName, true);
+      if (obj) {
+        metaData = {
+          ...obj.metaData,
+          ...metaData,
+        };
+      }
+    }
+
     const bucketName = this.bucketName;
     const obj = await this.client.putObject(bucketName, `${this.prefix}${objectName}`, putData, size, metaData);
     return obj;
@@ -117,10 +139,13 @@ export class OssBase implements OssBaseOperation {
     return obj as any;
   }
 
-  async statObject(objectName: string) {
+  async statObject(objectName: string, checkFile = true) {
     const bucketName = this.bucketName;
     try {
       const obj = await this.client.statObject(bucketName, `${this.prefix}${objectName}`);
+      if (obj && checkFile && obj.size === 0) {
+        return null;
+      }
       return obj;
     } catch (e) {
       if (e.code === 'NotFound') {
@@ -129,13 +154,29 @@ export class OssBase implements OssBaseOperation {
       throw e;
     }
   }
+  /**
+   * 检查文件hash是否一致
+   * @param objectName
+   * @param hash
+   * @returns
+   */
+  async checkObjectHash(objectName: string, hash: string) {
+    const obj = await this.statObject(`${this.prefix}${objectName}`, true);
+    if (!obj) {
+      return false;
+    }
+    return obj.etag === hash;
+  }
 
   async copyObject(sourceObject: any, targetObject: any) {
     const bucketName = this.bucketName;
     const obj = await this.client.copyObject(bucketName, sourceObject, targetObject);
     return obj;
   }
-
+  async replaceObject(objectName: string, meta: { [key: string]: string }) {
+    const { bucketName, client } = this;
+    return copyObject({ bucketName, client, objectName: `${this.prefix}${objectName}`, newMetadata: meta });
+  }
   static create<T extends OssBase, U>(this: new (opts: OssBaseOptions<U>) => T, opts: OssBaseOptions<U>): T {
     return new this(opts);
   }
diff --git a/src/services/index.ts b/src/services/index.ts
index 8354a2a..ec6cbba 100644
--- a/src/services/index.ts
+++ b/src/services/index.ts
@@ -1,2 +1,9 @@
-export { OssBase, OssBaseOptions } from '../index.ts';
+export { OssBase } from '../index.ts';
+export type { OssBaseOptions } from '../index.ts';
 export { ConfigOssService } from './config.ts';
+
+export * from '../util/download.ts';
+
+export * from '../util/index.ts';
+
+export * from '../core/type.ts';
diff --git a/src/test/config-admin.ts b/src/test/config-admin.ts
index 4e93c08..f810b37 100644
--- a/src/test/config-admin.ts
+++ b/src/test/config-admin.ts
@@ -4,9 +4,16 @@ import { Client } from 'minio';
 import path from 'path';
 import { downloadObject } from '../util/download.ts';
 const cwd = process.cwd();
-dotenv.config({ path: path.resolve(cwd, '..', '..', '.env') });
+dotenv.config({ path: path.resolve(cwd, '..', '..', '.env.dev') });
 
-console.log(process.env.MINIO_ENDPOINT, process.env.MINIO_USE_SSL, process.env.MINIO_ACCESS_KEY, process.env.MINIO_SECRET_KEY, process.env.MINIO_BUCKET_NAME);
+console.log(
+  'config',
+  process.env.MINIO_ENDPOINT,
+  process.env.MINIO_USE_SSL,
+  process.env.MINIO_ACCESS_KEY,
+  process.env.MINIO_SECRET_KEY,
+  process.env.MINIO_BUCKET_NAME,
+);
 const client = new Client({
   endPoint: process.env.MINIO_ENDPOINT,
   useSSL: process.env.MINIO_USE_SSL === 'true',
@@ -25,7 +32,7 @@ const main = async () => {
   console.log(config);
 };
 
-// main();
+main();
 const putJson = async () => {
   const config = await configOssService.putObject(
     'a.json',
@@ -50,7 +57,7 @@ const downloadMain = async () => {
   });
   // console.log(objectStream);
 };
-downloadMain();
+// downloadMain();
 
 const statInfo = async () => {
   try {
diff --git a/src/util/download.ts b/src/util/download.ts
index 82dd36e..174973c 100644
--- a/src/util/download.ts
+++ b/src/util/download.ts
@@ -1,7 +1,7 @@
-import { ServerResponse } from 'http';
+import { ServerResponse } from 'node:http';
 import { BucketItemStat } from 'minio';
-import fs from 'fs';
-import path from 'path';
+import fs from 'node:fs';
+import path from 'node:path';
 
 const viewableExtensions = ['jpg', 'jpeg', 'png', 'gif', 'svg', 'webp', 'mp4', 'webm', 'mp3', 'wav', 'ogg', 'pdf', 'doc', 'docx', 'xls', 'xlsx', 'ppt', 'pptx'];
 import { OssBase } from '../index.ts';
diff --git a/src/util/hash.ts b/src/util/hash.ts
index 321db88..55c8c6a 100644
--- a/src/util/hash.ts
+++ b/src/util/hash.ts
@@ -1,4 +1,4 @@
-import crypto from 'crypto';
+import crypto from 'node:crypto';
 // 582af9ef5cdc53d6628f45cb842f874a
 // const hashStr = '{"a":"a"}';
 // const hash = crypto.createHash('md5').update(hashStr).digest('hex');
diff --git a/tsup.config.ts b/tsup.config.ts
index fed798e..9797437 100644
--- a/tsup.config.ts
+++ b/tsup.config.ts
@@ -4,7 +4,7 @@ const services = glob.sync('src/services/*.ts');
 
 export default defineConfig({
   entry: ['src/index.ts', ...services],
-
+  target: 'node22',
   splitting: false,
   sourcemap: false,
   clean: true,