I wouldn't say it's the top benefit but it is a benefit indeed! You don't have to worry about setting any of those up unless you want to customize them. You shouldn't have to because they come with sane defaults (i.e., Babel has support for latest ES and the Webpack config takes care of everything for you).
For example, the only custom change we had to make was to add Webpack's `DefinePlugin` to expose `.env` variables in the client. It was extremely easy though (3 LOC) and we didn't need a full Webpack config.
For example, the only custom change we had to make was to add Webpack's `DefinePlugin` to expose `.env` variables in the client. It was extremely easy though (3 LOC) and we didn't need a full Webpack config.
See: https://github.com/zeit/next.js#custom-configuration