{ "presets": [ [ "@babel/preset-env", { "loose": true, "modules": false, "useBuiltIns": "usage", "corejs": 2, "shippedProposals": true, "targets": { "browsers": [">0.25%", "not dead"] } } ], [ "@babel/preset-react", { "useBuiltIns": true, "pragma": "React.createElement" } ] ], "plugins": [ [ "@babel/plugin-proposal-class-properties", { "loose": true } ], "@babel/plugin-syntax-dynamic-import", "babel-plugin-macros", [ "@babel/plugin-transform-runtime", { "helpers": true, "regenerator": true } ], ["babel-plugin-transform-imports", { "react-bootstrap": { "transform": "react-bootstrap/lib/${member}", "preventFullImport": true }, "lodash": { "transform": "lodash/${member}", "preventFullImport": true } } ] ] }