* Update babelHelpers option section default description

Update `babelHelpers` options documentation, which was confusing (and likely incorrect): it reported that `babelHelpers: 'inline'` is the default, when the header of the section says that the default is `'bundled'`.

Please verify that this documentation change reflects the actual behavior.

* docs(babel): based on PR feedback, make a second attempt at clarifying the babelHelpers default description.

* docs(babel): based on PR feedback, make a third attempt at clarifying the babelHelpers default description.

BREAKING CHANGE

* fix(commonjs): do not create fake named exports

* chore(commonjs): remove unneeded check

BREAKING CHANGE

* feat(pluginutils): add native node es modules support

Ref #412 #413

Enable native node es modules via "exports" field in package.json.
Added custom plugin to generate nested package.json with `{"type": "module"}`
to prevent mjs extension usage.

* Export emitModulePackageFile from shared config

* Bundle estree-walker

* Swap options

* fix(alias): properly initialize custom resolvers

* chore(commonjs): add helpful comment

…ption (#430)

)

* fix(commonjs): __moduleExports in multi entry + inter dependencies

* Added form tests outputs to .prettierignore

Helpful when debugging
Sometimes in a large codebase, a single comma buried in a gigantic json file can halt the entire build. This change ensures that users will more easily be able to find and fix those errors.

* Conform to Rollup type definitions. 

Also, exporting `defaultInclude` as I'd like to extend the defaults instead of redefining them.

* Update index.js