{ 'presets': ['react', 'es2015-no-commonjs'], 'plugins': [ 'transform-object-assign', 'transform-object-rest-spread', 'transform-react-display-name', [ 'transform-runtime', { 'polyfill': false, 'regenerator': false } ] ], 'sourceMaps': true, 'env': { 'demo': { 'plugins': [ [ 'react-transform', { 'transforms': [{ 'transform': 'react-transform-hmr', 'imports': ['react'], 'locals': ['module'] }] } ] ] } } }