* "namespace": Exports is already a namespace object. namespace = exports.
* "dynamic": Check at runtime if __esModule is set. When set: namespace = { ...exports, default: exports }. When not set: namespace = { default: exports }.
* "default-only": Provide a namespace object with only default export. namespace = { default: exports }
* "default-with-named": Provide a namespace object with named and default export. namespace = { ...exports, default: exports }