{ "presets": [ ["env", { "modules": false }], "stage-1", "react" ], "plugins": [ "lodash", ["babel-plugin-transform-builtin-extend", { "globals": ["Error"] }], ["transform-runtime", { "useBuiltIns": true, "useESModules": true }] ], "env": { "test": { "plugins": ["transform-es2015-modules-commonjs"] } } }