diff --git a/.swcrc b/.swcrc
index 6c39d93..1ac20ce 100644
--- a/.swcrc
+++ b/.swcrc
@@ -1,12 +1,7 @@
 {
-  "env": {
-    "targets": [
-      "chrome 64",
-      "edge 79",
-      "firefox 67",
-      "opera 51",
-      "safari 12"
-    ]
+  "jsc": {
+    "keepClassNames": true,
+    "target": "es2017"
   },
   "minify": true
 }
\ No newline at end of file