I think we should promote shareable browsers config instead of browsers option. Maybe browserslist key in package.json will be the best way.

I think most of babel-preset-env users also use Autoprefixer. So for better maintainability they should use shareable browsers config to use same browsers list in Autoprefixer and babel-preset-env. But most of developers doesn’t know about this option and benefits of it.

I already removed browsers option from all examples in Autoprefixer docs and focused on sharable configs.