diff --git a/index.js b/index.js
index 58b5865..07552f0 100644
--- a/index.js
+++ b/index.js
@@ -5,7 +5,8 @@ const path = require('path')
 
 const CACHE_HOME = require('xdg-basedir').cache || os.tmpdir()
 
-const { resolveEslintConfig } = require('./lib/resolve-eslint-config')
+const { resolveEslintConfig } = require('./lib/resolve-eslint-config.js')
+const cli = require('./bin/cmd.js')
 
 /** @typedef {import('eslint').ESLint.Options} EslintOptions */
 /** @typedef {Omit<import('./lib/resolve-eslint-config').ResolveOptions, 'cmd'|'cwd'>} BaseLintOptions */
@@ -114,5 +115,7 @@ class StandardEngine {
   }
 }
 
-module.exports.cli = require('./bin/cmd')
-module.exports.StandardEngine = StandardEngine
+module.exports = {
+  cli,
+  StandardEngine
+}