{ "presets": [ [ "@babel/env", { "targets": { "browsers": ["last 2 versions", "safari >= 7"] } } ], "@babel/preset-react" ], "plugins": [ [ "@babel/plugin-transform-runtime", { "helpers": false, "regenerator": true } ], ["@babel/plugin-proposal-decorators", { "legacy": true }], "@babel/plugin-syntax-dynamic-import", "@babel/transform-async-to-generator", "@babel/plugin-proposal-do-expressions", "@babel/plugin-proposal-class-properties" ] }