. The package
environment contains the exported objects from a package. It is
attached, so it is an ancestor of R_GlobalEnv.pkg_env(pkg = ".")as.package for more informationlibrary,
this environment contains only the exported objects from the
namespace. However, when loaded with load_all, this
environment will contain all the objects from the namespace, unless
load_all is used with export_all=FALSE.If the package is not attached, this function returns NULL.
ns_env for the namespace environment that
all the objects (exported and not exported).imports_env for the environment that contains
imported objects for the package.