Move to peerDep

Author: sebmarkbage

packages/react-flight-dom-webpack/package.json

@@ -33,12 +33,12 @@
   },
   "peerDependencies": {
     "react": "^16.0.0",
-    "react-dom": "^16.0.0"
+    "react-dom": "^16.0.0",
+    "webpack": "^4.41.2"
   },
   "dependencies": {
     "loose-envify": "^1.1.0",
-    "object-assign": "^4.1.1",
-    "webpack": "^4.41.2"
+    "object-assign": "^4.1.1"
   },
   "browserify": {
     "transform": [