{ "presets": [ "@babel/preset-env", "@babel/preset-react", "@babel/preset-typescript" ], "plugins": [ "babel-plugin-styled-components", "transform-react-remove-prop-types", "@babel/plugin-proposal-class-properties", "@babel/plugin-proposal-nullish-coalescing-operator", "extract-hoc/babel", "react-hot-loader/babel", "istanbul" ] }