module.exports = (api) => { api.cache(false); return { presets: [ '@babel/preset-env', '@babel/preset-react', ], plugins: [ '@babel/plugin-proposal-class-properties', '@babel/plugin-transform-runtime', '@babel/plugin-proposal-object-rest-spread', '@babel/plugin-proposal-nullish-coalescing-operator', '@babel/plugin-proposal-optional-chaining', 'react-hot-loader/babel', ], }; };