fix import issue

Author: ttt43ttt

package-lock.json

@@ -1,16 +1,17 @@
 {
   "name": "react-dnd-scrolling",
-  "version": "1.3.0",
+  "version": "1.3.1",
   "description": "A cross browser solution to scrolling during drag and drop.",
+  "main": "lib/cjs/index.js",
   "type": "module",
   "exports": {
     "util": {
       "import": "./lib/esm/util.js",
-      "require": "./lib/cjs/util.cjs"
+      "require": "./lib/cjs/util.js"
     },
     "default": {
       "import": "./lib/esm/index.js",
-      "require": "./lib/cjs/index.cjs"
+      "require": "./lib/cjs/index.js"
     }
   },
   "types": "types/index.d.ts",