fix: rc-util missing in deps

close #128

Author: afc163

package.json

@@ -42,7 +42,8 @@
   },
   "dependencies": {
     "@babel/runtime": "^7.10.1",
-    "classnames": "^2.2.6"
+    "classnames": "^2.2.6",
+    "rc-util": "^5.16.1"
   },
   "devDependencies": {
     "@types/classnames": "^2.2.9",