box_usage_linter {box.linters}

box library-aware object usage linter

Description

Checks that all function and data object calls made within a source file are valid. There are three ways for functions and data object calls to be come "valid". First is via base R packages. Second is via local declaration/definition. The third is via box::use() attachment.

Usage

box_usage_linter()

Details

For use in rhino, see the Explanation: Rhino style guide to learn about the details.

Value

A custom linter function for use with r-lib/lintr.

Examples

## Not run: 
box::use(
  dplyr[`%>%`, filter, pull],
  stringr,
)

mpg <- mtcars %>%
  filter(mpg <= 10) %>%
  pull(mpg)

mpg <- mtcars %>%
  filter(mpg <= 10) %>%
  select(mpg)             # will lint

trimmed_string <- stringr$str_trim("  some string  ")
trimmed_string <- stringr$strtrim("  some string  ")     # will lint

existing_function <- function(x, y, z) {
  mean(c(x, y, z))
}

existing_function(1, 2, 3)
non_existing_function(1, 2, 3)     # will lint

average(1, 2, 3)       # will lint

## End(Not run)