diff --git a/README.md b/README.md
index 19bb4c4..57c8ccc 100644
--- a/README.md
+++ b/README.md
@@ -28,6 +28,7 @@ npm i -D vite-plugin-sass-dts
 | typeName.replacement  | string \| (fileName: string) => string | Type name can be changed to any value. (default is the classname key as a string. e.g. `theClassName: 'theClassName';`)                                                                                                                                                                                                                                               |
 | outputDir             | string                                 | An absolute path to the output directory. If undefined, declaration files will be generated in the source directories. `)                                                                                                                                                                                                                                             |
 | sourceDir             | string                                 | An absolute path to your source code directory. The plugin will replace this path with `outputDir` option when writing declaration files. `)                                                                                                                                                                                                                          |
+| esmExport             | boolean                                | Specify dts export type. If enabled, going to use ESM style export `export default ...`. Otherwise `export = ...`.
 | prettierFilePath      | string                                 | Specify the path to the prettier configuration file.                                                                                                                                                                                                                                                                                                                  |
 
 ## Add it to vite.config.ts
diff --git a/src/type.ts b/src/type.ts
index 30d129a..bf4b0dc 100644
--- a/src/type.ts
+++ b/src/type.ts
@@ -11,6 +11,7 @@ export type PluginOptions = {
   enabledMode?: ('development' | 'production')[]
   global?: { generate: boolean; outputFilePath: string }
   typeName?: { replacement: string | ((fileName: string) => string) }
+  esmExport?: boolean
   outputDir?: string
   sourceDir?: string
   prettierFilePath?: string
diff --git a/src/write.ts b/src/write.ts
index 9f67210..24f4e65 100644
--- a/src/write.ts
+++ b/src/write.ts
@@ -17,7 +17,9 @@ export const writeToFile = async (
 ) => {
   const typeName = getTypeName(path.basename(fileName), options)
   let exportTypes = ''
-  const exportStyle = 'export = classNames;'
+  const exportStyle = options?.esmExport
+    ? 'export default classNames;'
+    : 'export = classNames;'
   for (const classNameKey of classNameKeys.keys()) {
     exportTypes = `${exportTypes}\n${formatExportType(classNameKey, typeName)}`
   }