linters: linters_with_defaults(
    # some tests have _VERY_ long expectations.
    line_length_linter(270),
    object_length_linter(80),
    object_name_linter = NULL,
    object_usage_linter = NULL,
    brace_linter = NULL,
    commented_code_linter = NULL,
    cyclocomp_linter = NULL,
    single_quotes_linter = NULL,
    seq_linter = NULL
  )
exclusions: list(
    # renv is vendored code, not ours.
    "inst/resources/renv.R",
    # test resources that are not "source".
    "tests/testthat/lockfiles",
    "tests/testthat/other-packages",
    "tests/testthat/packrat",
    "tests/testthat/projects",
    "tests/testthat/repo",
    "tests/testthat/repo-empty",
    "tests/testthat/resources"
  )
