## -----------------------------------------------------------------------------
knitr::opts_chunk$set(comment = "#>", collapse = TRUE)

## -----------------------------------------------------------------------------
# From dplyr:
#' @rawNamespace import(vctrs, except = data_frame)
NULL

# From backports:
#' @rawNamespace if (getRversion() < "4.0.0") export(stopifnot)
NULL

## -----------------------------------------------------------------------------
#' @importFrom pkg fun1 fun2
#' @importFrom pkg2 fun3
#' @importFrom pkg3 fun4
NULL