chore: clean up unused vars and babel config

Author: wuweiweiwu

package.json

@@ -4,17 +4,17 @@
   "description": "Drag-and-drop sortable component for nested data and hierarchies",
   "scripts": {
     "postinstall": "patch-package",
-    "prebuild": "npm run lint",
-    "build": "npm run clean && NODE_ENV=rollup rollup -c",
+    "prebuild": "npm run lint && npm run clean",
+    "build": "rollup -c",
     "build:storybook": "npm run clean:storybook && build-storybook -o build",
     "clean": "rimraf dist",
     "clean:storybook": "rimraf build",
     "lint": "eslint src",
     "prettier": "prettier --write \"{src,example/src,stories}/**/*.{js,css,md}\"",
     "prepublishOnly": "npm run lint && npm run test && npm run build",
     "release": "standard-version",
-    "test": "cross-env NODE_ENV=test jest",
-    "test:watch": "cross-env NODE_ENV=test jest --watchAll",
+    "test": "jest",
+    "test:watch": "jest --watchAll",
     "storybook": "start-storybook -p ${PORT:-3001} -h 0.0.0.0",
     "deploy": "gh-pages -d build"
   },

rollup.config.js

@@ -11,24 +11,17 @@ export default {
     {
       file: pkg.main,
       format: 'cjs',
-      exports: 'named'
+      exports: 'named',
     },
     {
       file: pkg.module,
       format: 'esm',
-      exports: 'named'
+      exports: 'named',
     },
   ],
   external: [
-    'react',
-    'react-dom',
-    'react-dnd',
-    'react-dnd/lib/DragDropContext',
-    'prop-types',
-    'react-dnd-html5-backend',
-    'react-dnd-scrollzone',
-    'react-virtualized',
-    'lodash.isequal',
+    ...Object.keys(pkg.dependencies),
+    ...Object.keys(pkg.peerDependencies),
   ],
   plugins: [
     nodeResolve(),