Hebcal core on react app not working

Hi

I tried using the @hebcal/core library on a react project, but it gives me this error when launching the app

./node_modules/@hebcal/core/dist/index.mjs 6243:10
Module parse failed: Unexpected token (6243:10)
File was processed with these loaders:
 * ./node_modules/babel-loader/lib/index.js
You may need an additional loader to handle the result of these loaders.
|    * @private
|    */
>   latitude;
|   /**
|    * @private

Can someone help me with this?

Thanks