filter_na() just wrap {dplyr} functions in a more
convenient way, IMO.
filter_na(data, type = c("any", "all"))a tibble object
# \donttest{
nice_data <- data.frame(c1 = c(1, NA), c2 = c(NA, NA))
nice_data %>%
filter_na("all")
#> c1 c2
#> 1 NA NA
nice_data %>%
filter_na("any")
#> c1 c2
#> 1 1 NA
#> 2 NA NA
# }