Breaking

• Hide all Reporters from SwiftLint's' public interface.
  SimplyDanny

• The options inlcuded, name and message are from now on ignored in the configuration for the private_unit_test rule. The option regex is still supported but is deprecated. It's recommended to use the list test_parent_classes instead which accepts names of parent test classes.
  SimplyDanny

• Remove support for disable and enable commands in multiline comments.
  Martin Redington #4798

Experimental

• None.

Enhancements

• Show specific violation message for the attributes rule when the option always_on_line_above or attributes_with_arguments_always_on_line_above is involved.
  chrisngabp 5103

• Rewrite control_statement rule using SwiftSyntax.
  SimplyDanny

• Add new non_overridable_class_declaration rule that triggers on class function and variable declarations in final classes that are not final themselves or private.
  SimplyDanny

• The Homebrew formula for SwiftLint now also installs completion scripts for Bash, Zsh and fish.
  SimplyDanny

• Add new private_swiftui_state_property opt-in rule to encourage setting SwiftUI @State and @StateObject properties to private.
  mt00chikin #3173

• The implicit_return rule now supports the kinds subscript and initializer in the included configuration list.
  SimplyDanny

• Add unneeded_override rule to remove function overrides that only call super.
  keith 5139

• Show a rule's active YAML configuration in output of swiftlint rules <rule>.
  SimplyDanny

• Add invokeTest() to overridden_super_call defaults.
  DylanBettermannDD

• Add --config-only option to rules command allowing to print only the YAML configuration of a single or all rules.
  SimplyDanny

• Add --default-config option to rules command allowing to use default values for configurations being printed for a single rule or all rules.
  SimplyDanny

• Add include_bare_init option to the explicit_init rule. include_bare_init encourages using named constructors over .init() and type inference.
  Martin Redington #5203

• Improved the reported location and reasons provided for issues detected by the invalid_seiftlint_command rule.
  Martin Redington #5204

• 100 is no longer considered to be a magic number by the no_magic_numbers rule.
  Martin Redington #5215

• Adds a strict configuration file setting, equivalent to the --strict command line option. Martin Redington #5226

• Extend implicitly_unwrapped_optional rule with the new mode weak_except_iboutlets that only checks weak variables.
  Ricky Tan

Bug Fixes

• Respect grapheme clusters in counting the number of characters in the collection_alignment rule.
  kishikawakatsumi #4837

• Fix false positive in control_statement rule that triggered on conditions with trailing closures where parentheses are recommended by the compiler.
  SimplyDanny #5135

• Fix runtime error when an excluded directory does not exist.
  SimplyDanny #5078

• Support switch expressions used in expression contexts in switch_case_alignment rule.
  SimplyDanny #5191 #5227 #5080

• Fix bug in prefer_self_in_static_references rule that triggered on initializers of computed properties in classes when the property had an accessor block.
  SimplyDanny #5118

• Document exclude_ranges option for number_separator rule.
  SimplyDanny

• Rewrite implicit_return rule with SwiftSyntax fixing a few false positives and false negatives in the process.
  SimplyDanny #5161

• Make sure severity is configurable for type_contents_order rule.
  SimplyDanny

• Bazel: Mark rules_xcodeproj as a development dependency.
  Thi Doãn JP Simard #4737

• Fix false negatives for the unneeded_synthesized_initializer rule for nested structs in classes.
  Martin Redington #5120

• Fix some unexpected rule enablement interactions between parent and child configurations.
  Martin Redington #4876

• The no_magic_numbers rule will not trigger for violations in an extension, if the extended class inherits from one of the specified test_parent_classes, as long as the class declaration and the extension are in the same source file.
  Martin Redington #5137

• Fix false positive in the ns_number_init_as_function_reference rule when calling NSNumber.init(value:) directly.
  Marcelo Fabri #5172

• The no_magic_numbers rule will not trigger for bitwise shift operations.
  Martin Redington #5171

• The accessibility_label_for_image rule will no longer ignore the Image(systemName:) constructor, as many system images do not have good accessibility labels.
  Martin Redington #5165

• Fix false positives for superfluous_disable_command rule.
  Martin Redington #4798

• Fix false positive in the test_case_accessibility rule.
  gibachan #5211

Using Bazel

With bzlmod:

// Pending BCR update
bazel_dep(name = "swiftlint", version = "0.53.0", repo_name = "SwiftLint")

Without bzlmod, put this in your WORKSPACE:

load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")

http_archive(
    name = "build_bazel_rules_apple",
    sha256 = "9e26307516c4d5f2ad4aee90ac01eb8cd31f9b8d6ea93619fc64b3cbc81b0944",
    url = "https://github.com/bazelbuild/rules_apple/releases/download/2.2.0/rules_apple.2.2.0.tar.gz",
)

load(
    "@build_bazel_rules_apple//apple:repositories.bzl",
    "apple_rules_dependencies",
)

apple_rules_dependencies()

load(
    "@build_bazel_rules_swift//swift:repositories.bzl",
    "swift_rules_dependencies",
)

swift_rules_dependencies()

load(
    "@build_bazel_rules_swift//swift:extras.bzl",
    "swift_rules_extra_dependencies",
)

swift_rules_extra_dependencies()

http_archive(
    name = "SwiftLint",
    sha256 = "75839dc9e8a492a86bb585a3cda3d73b58997d7a14d02f1dba94171766bb8599",
    url = "https://github.com/realm/SwiftLint/releases/download/0.53.0/bazel.tar.gz",
)

load("@SwiftLint//bazel:repos.bzl", "swiftlint_repos")

swiftlint_repos()

load("@SwiftLint//bazel:deps.bzl", "swiftlint_deps")

swiftlint_deps()

Then you can run SwiftLint in the current directory with this command:

bazel run @SwiftLint//:swiftlint -- --help