{ "plugins": [ "transform-object-assign", "transform-object-rest-spread" ], "presets": [ [ "env", { "targets": { "browsers": [ "last 2 versions", "IE >= 11" ] }, "modules": false } ], "babel-preset-react" ], "env": { "test": { "presets": [ [ "env", { "modules": "commonjs", } ] ] } }, }