Prevent base64 encoding on react sample application

When you run npm build on the provided react sample it features code which is base64 encoded for the rollup-web-worker-loader. Is there a way to prevent this as it’s currently being flagged as obfuscated code?

The section encoded looks like this:
("Lyogcm9sbHVwLXBsdWdpbi13ZWItd29ya2VyLWxvYWRlciAqLwohZnVuY3Rpb24oKXsidXNlIHN0cmljdCI7Y2xhc3MgZSBleHRlbmRzIEVycm9ye2NvbnN0cnVjdG9yKHQscil7c3VwZXIociksdGhpcy5lcnJvcj10LHRoaXMuZXJyb3JfZGVzY3JpcHRpb249cixPYmplY3Quc2V0UHJvdG90eXBlT2YodGhpcyxlLnByb3RvdHlwZSl9c3RhdGljIGZyb21QYXlsb2FkKHtlcnJvcjp0LGVycm9yX2Rlc2NyaXB0aW9uOnJ9KXtyZXR1cm4gbmV3IGUodCxyKX