message: chore: add react react-dom to devdependencies
diff: "postcss-loader": "^2.1.5",
  "prismjs": "^1.16.0",
  "raw-loader": "^0.5.1",
  + "react": "^16.9.0",
  "react-custom-scrollbars": "^4.2.1",
  + "react-dom": "^16.9.0",
  "react-hot-loader": "4.2.0",
  "react-test-renderer": "^16.8.6",
  "rimraf": "^2.6.3",
  