Updating a React Demo Page to latest packages.

I need help updating a React app to the latest packages, as now it always fails when building with yarn. This is just for a demo. Therefore it is not a huge project budget. Packages used: "devDependencies": { "babel-core": "6.24.1", "babel-eslint": "7.2.3", "babel-loader": "7.0.0", "babel-plugin-syntax-dynamic-import": "6.18.0", "babel-plugin-transform-class-properties": "6.24.1", "babel-plugin-transform-object-rest-spread": "6.23.0", "babel-plugin-transform-runtime": "6.15.0", "babel-preset-env": "1.4.0", "babel-preset-react": "6.24.1", "babel-runtime": "6.20.0", "chai": "3.5.0", "chai-as-promised": "6.0.0", "chai-enzyme": "0.6.1", "chalk": "1.1.3", "codecov": "2.2.0", "connect-history-api-fallback": "1.3.0", "cross-env": "5.0.0", "css-loader": "0.28.1", "dirty-chai": "1.2.2", "enzyme": "2.8.2", "eslint": "4.19.0", "eslint-config-standard": "10.2.1", "eslint-config-standard-react": "5.0.0", "eslint-plugin-babel": "4.1.1", "eslint-plugin-import": "2.2.0", "eslint-plugin-node": "4.2.2", "eslint-plugin-promise": "3.5.0", "eslint-plugin-react": "7.0.1", "eslint-plugin-standard": "3.0.1", "extract-text-webpack-plugin": "2.1.0", "figures": "2.0.0", "file-loader": "0.11.1", "fs-extra": "3.0.1", "html-webpack-plugin": "2.24.1", "karma": "1.7.0", "karma-coverage": "1.1.1", "karma-mocha": "1.3.0", "karma-mocha-reporter": "2.2.1", "karma-phantomjs-launcher": "1.0.4", "karma-webpack-with-fast-source-maps": "1.10.0", "mocha": "3.2.0", "node-sass": "4.5.3", "phantomjs-prebuilt": "2.1.14", "react-addons-test-utils": "15.5.1", "react-test-renderer": "15.5.4", "rimraf": "2.6.1", "sass-loader": "6.0.5", "sinon": "2.2.0", "sinon-chai": "2.10.0", "style-loader": "0.17.0", "url-loader": "0.5.8", "webpack": "2.5.1", "webpack-dev-middleware": "1.8.4", "webpack-hot-middleware": "2.13.2", "yargs": "8.0.1" }