sp-dev-fx-webparts/samples/react-facebook-plugin/package.json

{
  "name": "react-facebook-plugin",
  "version": "0.0.1",
  "private": true,
  "main": "lib/index.js",
  "scripts": {
    "build": "npm run clean && gulp build && gulp bundle && gulp package-solution",
    "build:prod": "npm run clean && gulp build --ship && gulp bundle --ship && gulp package-solution --ship",
    "dev": "gulp serve",
    "clean": "gulp clean",
    "test": "gulp test"
  },
  "dependencies": {
    "@microsoft/sp-core-library": "1.12.1",
    "@microsoft/sp-lodash-subset": "1.12.1",
    "@microsoft/sp-office-ui-fabric-core": "1.12.1",
    "@microsoft/sp-property-pane": "1.12.1",
    "@microsoft/sp-webpart-base": "1.12.1",
    "office-ui-fabric-react": "7.156.0",
    "on-el-resize": "0.0.4",
    "react": "16.9.0",
    "react-dom": "16.9.0"
  },
  "devDependencies": {
    "@microsoft/rush-stack-compiler-3.7": "0.2.3",
    "@microsoft/sp-build-web": "1.12.1",
    "@microsoft/sp-module-interfaces": "1.12.1",
    "@microsoft/sp-tslint-rules": "1.12.1",
    "@microsoft/sp-webpart-workbench": "1.12.1",
    "@types/react": "16.9.36",
    "@types/react-dom": "16.9.8",
    "@types/webpack-env": "1.13.1",
    "ajv": "~5.2.2",
    "gulp": "~4.0.2"
  }
}