{ "presets": [ "react", [ "env", { "loose": true, "targets": { "browsers": ["last 2 versions", "IE >= 11", "iOS >= 9"] } } ] ], "plugins": [ "syntax-dynamic-import", "transform-object-rest-spread", [ "react-intl", { "messagesDir": "./build/messages" } ] ], "env": { "development": { "plugins": [ "transform-react-jsx-source", "transform-react-jsx-self" ] }, "production": { "plugins": [ "lodash" ] } }}