diff --git a/.eslintrc.js b/.eslintrc.cjs
similarity index 100%
rename from .eslintrc.js
rename to .eslintrc.cjs
diff --git a/karma.conf.js b/karma.conf.cjs
similarity index 100%
rename from karma.conf.js
rename to karma.conf.cjs
diff --git a/package.json b/package.json
index b3260fb..bfe3233 100644
--- a/package.json
+++ b/package.json
@@ -2,12 +2,10 @@
   "name": "referentiel",
   "version": "2.0.1",
   "description": "Convert position relative to a html element.",
-  "main": "dist/referentiel.umd.js",
-  "types": "dist/referentiel.d.ts",
-  "module": "dist/referentiel.js",
   "directories": {
     "test": "test"
   },
+  "type": "module",
   "files": [
     "dist",
     "src"
diff --git a/webpack.config.js b/webpack.config.cjs
similarity index 100%
rename from webpack.config.js
rename to webpack.config.cjs