diff --git a/data/js/mangle.json b/data/js/mangle.json
new file mode 100644
index 0000000..45b2383
--- /dev/null
+++ b/data/js/mangle.json
@@ -0,0 +1,13 @@
+{{
+  "minify": {{
+    "mangle": {{
+      "properties": {{
+        "regex": "^_[^_]"
+      }}
+    }}
+  }},
+  "props": {{
+    "props": {{
+    }}
+  }}
+}}