message: npm install prop-types
diff: "eslint-plugin-flowtype": "^5.1.3",
  "eslint-plugin-react": "^7.20.0",
  "jsondiffpatch": "^0.4.1",
  + "prop-types": "^15.7.2",
  "react": "^16.13.1",
  "react-dom": "^16.13.1",
  "react-html-parser": "^2.0.2",
  