diff --git a/assets/webpack.config.js b/assets/webpack.config.js
index f45c86dc2..da5dd6e93 100644
--- a/assets/webpack.config.js
+++ b/assets/webpack.config.js
@@ -9,6 +9,7 @@ module.exports = {
     libraryTarget: 'umd',
     globalObject: 'this'
   },
+  devtool: 'source-map',
   module: {
     rules: [
       {