diff --git a/biome.json b/biome.json
index b8277af..349ad31 100644
--- a/biome.json
+++ b/biome.json
@@ -1,28 +1,28 @@
 {
-	"$schema": "https://biomejs.dev/schemas/1.8.3/schema.json",
-	"formatter": {
-		"enabled": true,
-		"formatWithErrors": false,
-		"indentStyle": "space",
-		"indentWidth": 2,
-		"lineEnding": "lf",
-		"lineWidth": 120,
-		"attributePosition": "auto"
-	},
-	"organizeImports": { "enabled": true },
-	"linter": { "enabled": true, "rules": { "recommended": true } },
-	"javascript": {
-		"formatter": {
-			"jsxQuoteStyle": "double",
-			"quoteProperties": "asNeeded",
-			"trailingCommas": "all",
-			"semicolons": "always",
-			"arrowParentheses": "always",
-			"bracketSpacing": true,
-			"bracketSameLine": false,
-			"quoteStyle": "single",
-			"attributePosition": "auto"
-		}
-	},
-	"overrides": [{ "include": ["**/*.astro"] }]
+  "$schema": "https://biomejs.dev/schemas/1.8.3/schema.json",
+  "formatter": {
+    "enabled": true,
+    "formatWithErrors": false,
+    "indentStyle": "space",
+    "indentWidth": 2,
+    "lineEnding": "lf",
+    "lineWidth": 120,
+    "attributePosition": "auto"
+  },
+  "organizeImports": { "enabled": true },
+  "linter": { "enabled": true, "rules": { "recommended": true } },
+  "javascript": {
+    "formatter": {
+      "jsxQuoteStyle": "double",
+      "quoteProperties": "asNeeded",
+      "trailingCommas": "all",
+      "semicolons": "always",
+      "arrowParentheses": "always",
+      "bracketSpacing": true,
+      "bracketSameLine": false,
+      "quoteStyle": "single",
+      "attributePosition": "auto"
+    }
+  },
+  "overrides": [{ "include": ["**/*.astro"] }]
 }
diff --git a/build.config.ts b/build.config.ts
index f235abd..b782c08 100644
--- a/build.config.ts
+++ b/build.config.ts
@@ -1,16 +1,11 @@
-import { defineBuildConfig } from 'unbuild'
+import { defineBuildConfig } from 'unbuild';
 
 export default defineBuildConfig({
-  entries: [
-    'src/index',
-  ],
+  entries: ['src/index'],
   clean: true,
   declaration: true,
   rollup: {
     emitCJS: true,
   },
-  externals: [
-    'astro',
-    'astro/zod'
-  ],
-})
+  externals: ['astro', 'astro/zod'],
+});
diff --git a/package.json b/package.json
index 8ffc8b7..ad5ab32 100644
--- a/package.json
+++ b/package.json
@@ -2,11 +2,7 @@
   "name": "astro-uploader",
   "version": "1.0.1",
   "description": "A uploader for uploading the Astro generated files through the S3 API.",
-  "keywords": [
-    "Astro",
-    "S3",
-    "withastro"
-  ],
+  "keywords": ["Astro", "S3", "withastro"],
   "bugs": {
     "url": "https://github.com/syhily/astro-uploader/issues"
   },
@@ -27,12 +23,10 @@
   "main": "./dist/index.mjs",
   "module": "./dist/index.mjs",
   "types": "./dist/index.d.ts",
-  "files": [
-    "dist"
-  ],
+  "files": ["dist"],
   "scripts": {
     "build": "unbuild",
-    "format": "biome format src --write",
+    "format": "biome format . --write",
     "stub": "unbuild --stub"
   },
   "dependencies": {
diff --git a/src/index.ts b/src/index.ts
index 4347839..f10cf5b 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -38,7 +38,7 @@ const S3Options = z
     region: z.string().min(1).default('auto'),
     endpoint: z.string().url().optional(),
     bucket: z.string().min(1),
-    root: z.string().default('/'),
+    root: z.string().default(''),
     accessKey: z.string().min(1),
     secretAccessKey: z.string().min(1),
     extraOptions: z.record(z.string(), z.string()).default({}),
@@ -95,10 +95,6 @@ class Uploader {
     this.override = override;
   }
 
-  private async delete(key: string): Promise<void> {
-    await this.operator.delete(key);
-  }
-
   async isExist(key: string, size: number): Promise<boolean> {
     const exist = await this.operator.isExist(key);
     if (exist) {