const defaultPresets = [ [ '@babel/preset-env', { modules: 'commonjs', loose: true, }, ], ]; module.exports = { presets: defaultPresets.concat(['@babel/preset-react', '@babel/preset-flow']), plugins: [ ['@babel/plugin-proposal-class-properties', { loose: true }], ['@babel/plugin-proposal-private-property-in-object', { loose: true }], ['@babel/plugin-proposal-private-methods', { loose: true }], '@babel/plugin-proposal-export-default-from', '@babel/plugin-proposal-export-namespace-from', '@babel/plugin-proposal-function-bind', ], };