Fix hot-loader warning

Change-Id: I721983ebc15668d69d58ca815cc43e836ef12533

config/webpack.config.dev.js

@@ -89,6 +89,7 @@ module.exports = {
       // Support React Native Web
       // https://www.smashingmagazine.com/2016/08/a-glimpse-into-the-future-with-react-native-for-web/
       'react-native': 'react-native-web',
+      'react-dom': '@hot-loader/react-dom',
     },
     plugins: [
       // Prevents users from importing files from outside of src/ (or node_modules/).

package-lock.json

@@ -379,6 +379,17 @@
       "resolved": "https://registry.npmjs.org/@emotion/hash/-/hash-0.7.2.tgz",
       "integrity": "sha512-RMtr1i6E8MXaBWwhXL3yeOU8JXRnz8GNxHvaUfVvwxokvayUY0zoBeWbKw1S9XkufmGEEdQd228pSZXFkAln8Q=="
     },
+    "@hot-loader/react-dom": {
+      "version": "16.8.6",
+      "resolved": "https://registry.npmjs.org/@hot-loader/react-dom/-/react-dom-16.8.6.tgz",
+      "integrity": "sha512-+JHIYh33FVglJYZAUtRjfT5qZoT2mueJGNzU5weS2CVw26BgbxGKSujlJhO85BaRbg8sqNWyW1hYBILgK3ZCgA==",
+      "requires": {
+        "loose-envify": "^1.1.0",
+        "object-assign": "^4.1.1",
+        "prop-types": "^15.6.2",
+        "scheduler": "^0.13.6"
+      }
+    },
     "@jest/console": {
       "version": "24.9.0",
       "resolved": "https://registry.npmjs.org/@jest/console/-/console-24.9.0.tgz",

package.json

@@ -3,6 +3,7 @@
   "version": "0.1.0",
   "private": true,
   "dependencies": {
+    "@hot-loader/react-dom": "^16.8.6",
     "@material-ui/core": "^4.3.2",
     "@material-ui/icons": "^4.2.1",
     "@typescript-eslint/eslint-plugin": "^1.13.0",