Import from datasets package

datasets.test-package.R

#' datasets.test
#' @importFrom datasets co2
#' @export
ds_test <- function(x){
  datasets::co2[x]
}

DESCRIPTION

Package: datasets.test
Title: What the Package Does (one line, title case)
Version: 0.0.0.9000
Authors@R: c(person("Joseph", "Stachelek", email = "[email protected]", role = c("aut", "cre")))
Description: What the package does (one paragraph).
Depends:
    R (>= 3.3.3)
Imports:
    datasets
License: GPL (>= 2)
Encoding: UTF-8
LazyData: true
RoxygenNote: 5.0.1

Did you ever get an answer on this? I'm having the same issue.

Undefined global functions or variables:
state.abb state.name
Consider adding
importFrom("datasets", "state.abb", "state.name")
to your NAMESPACE file.

Had the same problem. What worked for me:

1. Delete the line "#' @importFrom datasets co2"
2. No entry "datasets" in the "Imports" list