My linter file

.lintr

linters: all_linters(
  # packages = "lintr",
  line_length_linter = NULL,
  namespace_linter = NULL,
  todo_comment_linter = NULL,
  cyclocomp_linter = NULL,
  duplicate_argument_linter = NULL, # cli_abort...
  object_usage_linter = NULL, # problem
  implicit_integer_linter = NULL,
  object_length_linter = NULL, # will not rename objects
  object_name_linter = NULL, # sometimes, there are good reasons behind naming conventions.
  nonportable_path_linter = NULL,
  expect_identical_linter = NULL, # doesn't seem widely usedm nor worth the effort.
  absolute_path_linter = NULL,
  indentation_linter = NULL, # When working on a PR, it's better, not to touch that. Either styler::style_pkg() or live with it :)
  keyword_quote_linter = NULL,
  undesirable_function_linter = NULL, # when I understand lintr a bit more, I would just exclude library in packages
  commented_code_linter = NULL,
  unreachable_code_linter = NULL, # would be useful in packages
  extraction_operator_linter = NULL # would be useful in packages
  ) # see vignette("lintr")
encoding: "UTF-8"
exclusions: list("renv", "packrat", "data-raw") # see ?lintr::exclude