{ "presets": [ [ "@babel/env", { "useBuiltIns": "usage", "corejs": 3 } ], "@vue/cli-plugin-babel/preset", "@babel/preset-react" ], "plugins": [ "@babel/plugin-proposal-export-default-from", "@babel/plugin-transform-arrow-functions", "@babel/plugin-proposal-object-rest-spread", "@babel/plugin-transform-classes", "@babel/plugin-transform-object-assign", [ "@babel/plugin-transform-runtime", { "corejs": 3 } ] ], "sourceType": "unambiguous", "env": { "test": { "presets": [ ["@babel/env"], "@vue/cli-plugin-babel/preset", "@babel/preset-react" ], "plugins": [ "@babel/plugin-proposal-export-default-from", "@babel/plugin-transform-arrow-functions", "@babel/plugin-proposal-object-rest-spread", "@babel/plugin-transform-classes", "@babel/plugin-transform-object-assign", "@babel/plugin-transform-modules-commonjs" ] } } }