SwiftLint Files

Bug Fixes

• Honor excluded paths when the linted project is located under a system directory on macOS that resolves through a symlink, such as /var and /tmp (which point to /private/var and /private/tmp).
  tumata #6782

0.64.0: All Windows Opened

Breaking

• The ignored_literal_argument_functions option of the force_unwrapping rule now uses the configured value as-is instead of always merging in the five built-in defaults (URL(string:), NSURL(string:), UIImage(named:), NSImage(named:), Data(hexString:)). Those five functions remain the default when the option is not configured, but setting ignored_literal_argument_functions to any explicit list — including [] — now fully replaces the defaults. Configurations that add functions on top of the defaults must now explicitly include the five previously-default functions in their list. SimplyDanny #6675

Enhancements

• SwiftLint can now be built and run on Windows. It is expected to work in the same way as on other platforms. The only restrictions are missing support for ?[] glob patterns in include/exclude patterns and the requirement for \n as line ending in all linted files.
  compnerd roman-bcny SimplyDanny #6351 #6352

• Rename allow_implicit_init to include_implicit_init for the optional_data_string_conversion rule to convey its purpose more clearly.
  SimplyDanny #6670

• Improve linting performance by 10-15%, especially when running with many threads, by optimizing cache locking and reducing contention. Depending on the project and level of concurrency, the performance improvement can be even higher (3-4x).
  SimplyDanny

• Rewrite the following rules with SwiftSyntax:

• file_types_order

SimplyDanny

• Fix false positive in accessibility_label_for_image rule for images inside SwiftUI Label's icon: closure, which are inherently labeled by the Label's text content.
  sutheesh #6420

Bug Fixes

• Fix literal_expression_end_indentation autocorrection deleting source code when the closing bracket of a multiline literal shares a line with the end of a multiline last element (e.g. ...))]). The corrector assumed everything before the bracket on that line was indentation and replaced it; it now moves only the bracket to its own line at the expected indentation.
  Luan Câmara #2823

• Don't rewrite the type operand of an is / as? / as! cast (such as x is A) to Self in prefer_self_in_static_references when inside a class-like scope. Self is the dynamic type, so the rewrite silently changed runtime behavior for non-final classes (x is Self is not equivalent to x is A). Mirrors the rule's existing X.self skip; static member references such as A.f() are still corrected.
  Brett-Best #6764

• Avoid false positives in vertical_parameter_alignment when a parameter is preceded by multi-byte characters, such as a function name containing non-ASCII letters. Alignment is now compared by visible column rather than by UTF-8 byte offset.
  systemBlue #5037

• Treat macro declarations like function declarations for line_length when ignores_function_declarations is enabled.
  leno23 #5648

• Make Glob.expandGlobstar tolerant of unreadable directory entries on large trees. subpathsOfDirectory(atPath:) aborted the entire glob expansion on the first unreadable entry (permission denied, dangling symlink, file removed mid-scan), causing most files in large projects to be silently ignored. Replace the directory walk with a lazy URL enumerator that has a per-item error handler so unreadable items are skipped individually.
  Chupik

• Avoid false positives in prefer_self_in_static_references for generic constraints and generic parameter bounds such as where A: P and <A: P> in classes and extensions.
  SimplyDanny #6674

• Don't rewrite a type reference to Self in prefer_self_in_static_references when it appears in a protocol composition (such as any A & B), as the constraint of an existential or opaque type (such as any A or some A), or as the base of an existential metatype (such as A.Protocol), since the named type is not interchangeable with Self in those positions.
  Brett-Best #6748

Using Bazel

With bzlmod:

// Pending BCR update
bazel_dep(name = "swiftlint", version = "0.64.1", repo_name = "SwiftLint")

Without bzlmod, put this in your WORKSPACE:

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

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