{ "env": { "development": { "application/javascript": { "presets": [ [ "env", { "targets": { "electron": "4.0" } } ], "react" ], "plugins": [ "transform-async-to-generator" ], "sourceMaps": "inline" } }, "production": { "application/javascript": { "presets": [ [ "env", { "targets": { "electron": "4.0" } } ], "react" ], "plugins": [ "transform-async-to-generator" ], "sourceMaps": "none" } } } }