diff --git a/package.json b/package.json
index 971b544..8716487 100644
--- a/package.json
+++ b/package.json
@@ -110,6 +110,7 @@
     ],
     "env": {
       "debug": {
+        "sourceMaps": "both",
         "presets": [
           [
             "@babel/preset-env",
@@ -121,6 +122,7 @@
         ]
       },
       "test": {
+        "sourceMaps": "both",
         "presets": [
           [
             "@babel/preset-env",