one should not upgrade a production environment without extensive testing. I prefer to not upgrade prod at all. Instead, I create a new instance with latest everything, host my apps there, test everything out, and then make it production.

The following options are ideal for development:

Some of these values are suited for development and some for production. For development you typically want fast Source Maps at the cost of bundle size, but for production you want separate Source Maps that are accurate and support minimizing.