Breaking

• None.

Experimental

• None.

Enhancements

• Add type-checked analyzer rule version of ArrayInitRule named TypesafeArrayInitRule with identifier typesafe_array_init that avoids the false positives present in the lint rule.
  SimplyDanny #3749

• Add the --in-process-sourcekit command line flag to lint and analyze commands, which has the same effect as setting the IN_PROCESS_SOURCEKIT environment variable.
  Juozas Valancius

• Add a new artifactbundle release asset containing swiftlint binaries for x86 & arm64 macOS.
  Juozas Valancius #3840

• Add back return_value_from_void_function opt-in rule to warn against using return <expression> in a function that returns Void.
  Marcelo Fabri

• Don't skip autocorrect on files that have parser warnings. Only files with errors reported by the Swift parser will be skipped.
  Marcelo Fabri #3343

• Add accessibility_label_for_image rule to warn if a SwiftUI Image does not have an accessibility label and is not hidden from accessibility.
  Ryan Cole

• Add unavailable_condition rule to prefer using if #unavailable instead of if #available with an empty body and an else condition when using Swift 5.6 or later.
  Marcelo Fabri #3897

• Add comma_inheritance rule to validate that inheritance clauses use commas instead of &.
  Marcelo Fabri #3950

Bug Fixes

• Fix false positives in unused_closure_parameter when using parameters with backticks.
  JP Simard #3628

• Improved the syntactic_sugar rule's detection accuracy and fixed some corrections leading to invalid code.
  Paul Taykalo #3866

• Fix analyzer rules with Xcode 13.3 / Swift 5.6. Note that we've measured performance regressions compared to Swift 5.5 on the order of about 2x.
  JP Simard #3920

• Error by default on bad expiring todo date formatting.
  Christopher Hale #3636

• Lint/analyze all files listed in the command even if the --path option is used.
  coffmark