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SwiftLint STRICT Mode Fixes - Progress Document

Session Date: 2026-01-02

Objective

Fix 7 specific SwiftLint violation types across the codebase:

  1. explicit_acl - Add access control keywords
  2. explicit_top_level_acl - Add access control to top-level types
  3. type_contents_order - Reorganize type members in correct order
  4. multiline_arguments_brackets - Move closing brackets to new lines
  5. line_length - Break lines over 108 characters
  6. conditional_returns_on_newline - Move return statements to new lines
  7. discouraged_optional_boolean - SKIPPED per user decision

Progress Summary

✅ Phase 1: High-Impact Files (5/5 Complete) ✨

Completed Files:

1. SyncEngine.swift ✅

  • Fixed explicit_acl: Added internal to properties (cloudKitService, pipeline)
  • Fixed type_contents_order: Reorganized to put all nested types (SyncOptions, SyncResult, DetailedSyncResult, TypeSyncResult) before instance properties
  • Fixed line_length: Changed line 194 to use multi-line string literal
  • Key change: Type structure now follows: nested types → properties → initializer → methods

2. ExportCommand.swift ✅

  • Fixed explicit_acl: Added internal to properties in nested structs
  • Fixed type_contents_order: Moved all nested types (ExportData, RecordExport, ExportError) to top of enum
  • Fixed conditional_returns_on_newline: Line 85 (now 113) guard statement
  • Key change: Nested struct properties needed to be internal (not private) for Codable memberwise initializer

3. VirtualBuddyFetcher.swift ✅

  • Fixed explicit_acl: Added internal to struct, typealias, initializers, and functions
  • Fixed explicit_top_level_acl: Added internal to VirtualBuddyFetcher and VirtualBuddyFetcherError
  • Fixed line_length: Split two long print statements (lines 96, 113)
  • Fixed multiline_arguments_brackets: URLComponents initializer now has closing bracket on new line
  • Key change: All public-facing types and methods now explicitly internal

4. BushelCloudKitService.swift ✅

  • Fixed type_contents_order: Moved service instance property after recordTypes type property
  • Fixed line_length: Line 207-208 split using multi-line string literal with backslash continuation
  • Fixed multiline_arguments_brackets: Line 184 executeBatchOperations call now has closing bracket on new line
  • Key change: Static properties must come before instance properties

5. PEMValidator.swift ✅

  • Fixed explicit_acl: Added internal to static func validate
  • Fixed explicit_top_level_acl: Added internal to PEMValidator enum
  • Fixed line_length: Lines 57, 66, 89 all split using multi-line string literals
  • Key change: All three error suggestion strings converted to multi-line format for readability

✅ Phase 2: Data Source Files (5/5 Complete) ✨

Completed Files:

1. DataSourcePipeline+Deduplication.swift ✅

  • Fixed explicit_acl: Added internal to 4 deduplication functions (lines 36, 59, 168, 182)
  • Skipped: discouraged_optional_boolean (7 violations) - intentional tri-state Bool? for signing status
  • Key change: All deduplication methods now have explicit access control

2. XcodeReleasesFetcher.swift ✅

  • Fixed type_contents_order: Moved init() after all nested types (was at line 50, now at line 126)
  • Fixed conditional_returns_on_newline: Line 175 guard statement now has return on new line
  • Key change: Nested types → init → methods ordering now correct

3. MrMacintoshFetcher.swift ✅

  • Fixed explicit_acl: Added internal to FetchError enum (line 227) and loggingCategory (line 235)
  • Fixed conditional_returns_on_newline: Three guard statements (lines 98, 114, 118) now have returns on new lines
  • Key change: All 5 guard early returns now properly formatted

4. SwiftVersionFetcher.swift ✅

  • Fixed explicit_acl: Added internal to struct, typealias, fetch method, and FetchError enum (lines 39, 40, 56, 104)
  • Fixed explicit_top_level_acl: Added internal to top-level struct (line 39)
  • Fixed multiline_arguments_brackets: Line 87 closing bracket moved to new line
  • Key change: Consistent internal access control throughout

5. MESUFetcher.swift ✅

  • Fixed explicit_acl: Added internal to FetchError enum (line 117)
  • Fixed line_length: Line 69 comment split into two lines
  • Key change: Long plist structure comment now readable within line limit

✅ Phase 3: Configuration Files (3/3 Complete) ✨

Completed Files:

1. ConfigurationLoader.swift ✅

  • Fixed explicit_acl: Added internal to 8 functions (lines 74, 79, 87, 98, 119, 143, 155, 167)
  • Functions fixed: readString, readInt, readDouble, read(:ConfigKey), read(:ConfigKey), read(:OptionalConfigKey), read(:OptionalConfigKey), read(_:OptionalConfigKey)
  • Key change: All configuration reader helper methods now have explicit access control

2. ConfigurationKeys.swift ✅

  • Fixed multiline_arguments_brackets: Line 101 closing bracket moved to new line
  • Key change: Multi-line ConfigKey initialization now properly formatted

3. CloudKitConfiguration.swift ✅

  • Fixed line_length: Line 110 error message split using multi-line string literal
  • Key change: Long error message for invalid CLOUDKIT_ENVIRONMENT now readable

✅ Phase 4: CloudKit Extensions (5/5 Complete) ✨

Completed Files:

1. RestoreImageRecord+CloudKit.swift ✅

  • Fixed type_contents_order: Moved toCloudKitFields() instance method after static methods
  • Order now: cloudKitRecordType (type property) → from/formatForDisplay (static methods) → toCloudKitFields (instance method)
  • Key change: Instance methods now properly placed after type methods

2. XcodeVersionRecord+CloudKit.swift ✅

  • Fixed type_contents_order: Moved toCloudKitFields() instance method after static methods
  • Fixed multiline_arguments_brackets: Two FieldValue.Reference calls (lines 62, 70) now have closing brackets on new lines
  • Key change: Both type order and multiline formatting corrected

3. SwiftVersionRecord+CloudKit.swift ✅

  • Fixed type_contents_order: Moved toCloudKitFields() instance method after static methods
  • Key change: Consistent ordering with other CloudKitRecord conformances

4. DataSourceMetadata+CloudKit.swift ✅

  • Fixed type_contents_order: Moved toCloudKitFields() instance method after static methods
  • Key change: All CloudKit extension files now follow same pattern

5. FieldValue+URL.swift ✅

  • Fixed type_contents_order: Moved urlValue property before init(url:) initializer
  • Order now: instance properties → initializers (correct Swift convention)
  • Key change: Properties must come before initializers

✅ Phase 5: Remaining Source and Test Files (~60/60 Complete) ✨

Source Files Fixed:

1. ConsoleOutput.swift ✅

  • Fixed conditional_returns_on_newline: Line 45 guard statement now has return on new line
  • Key change: Verbose mode check now properly formatted

2. SyncEngine+Export.swift ✅

  • Fixed line_length: Line 86 split using multi-line string literal with backslash continuation
  • Fixed type_contents_order: Moved ExportResult struct before export() method (nested types before methods)
  • Key change: Correct ordering of subtypes → methods in extension

3. IPSWFetcher.swift ✅

  • Fixed explicit_acl: Added internal to struct, typealias, and fetch method
  • Fixed multiline_arguments_brackets: URLSession.fetchLastModified call closing bracket moved to new line
  • Key change: Complete access control coverage

4. DataSourcePipeline.swift ✅

  • Fixed explicit_acl: Added internal to configuration property and fetchWithMetadata method
  • Fixed type_contents_order: Reorganized to subtypes → properties → init → methods
  • Fixed conditional_returns_on_newline: Line 149 guard statement
  • Fixed line_length: Line 182 print statement split
  • Key change: Major reorganization for correct type ordering

5. DataSourcePipeline+Fetchers.swift ✅

  • Fixed explicit_acl: Added internal to fetchRestoreImages, fetchXcodeVersions, fetchSwiftVersions methods
  • Key change: All fetcher orchestration methods now explicit

6. DataSourcePipeline+ReferenceResolution.swift ✅

  • Fixed explicit_acl: Added internal to resolveXcodeVersionReferences method
  • Fixed conditional_returns_on_newline: Line 60 guard statement
  • Key change: Reference resolution logic properly formatted

AppleDB Model Files Fixed (9 files):

7-15. AppleDB Data Source Models ✅

  • AppleDBEntry.swift: Added internal to all 9 properties, moved CodingKeys before properties
  • AppleDBHashes.swift: Added internal to 2 properties
  • AppleDBLink.swift: Added internal to 3 properties
  • AppleDBSource.swift: Added internal to 6 properties
  • GitHubCommit.swift: Added internal to 2 properties
  • GitHubCommitsResponse.swift: Added internal to 2 properties
  • GitHubCommitter.swift: Added internal to 1 property
  • SignedStatus.swift: Added internal to 3 functions (init, encode, isSigned)
  • Key change: All AppleDB Codable models now have explicit access control with correct type ordering

TheAppleWiki Model Files Fixed (5 files):

16-20. TheAppleWiki Data Source Models ✅

  • IPSWParser.swift: Added internal to 2 properties and 1 function, fixed 1 conditional return, fixed 1 multiline bracket
  • IPSWVersion.swift: Added internal to 10 properties and 2 computed properties, fixed 1 conditional return
  • ParseContent.swift: Added internal to 2 properties
  • ParseResponse.swift: Added internal to 1 property
  • TextContent.swift: Added internal to 1 property, moved CodingKeys before property
  • Key change: Wikipedia parser models fully compliant with access control rules

Data Source Fetcher Type Ordering Fixed (6 files):

21-26. Fetcher Reorganization ✅

  • XcodeReleasesFetcher.swift: Reorganized nested types before properties (8+ type_contents_order fixes)
  • SwiftVersionFetcher.swift: Reordered nested types → type properties → methods
  • MESUFetcher.swift: Reordered nested types → initializer → methods
  • AppleDBFetcher.swift: Fixed multiline bracket + reorganized type/instance properties → type/instance methods
  • MrMacintoshFetcher.swift: Reordered nested types → methods (5 violations)
  • TheAppleWikiFetcher.swift: Fixed multiline bracket in fetchLastModified call
  • Key change: All fetchers now follow consistent structure: nested types → properties → init → methods

Test Files Fixed (38+ files):

27-64. Complete Test Suite ✅

  • Mocks/ (8 files): MockAppleDBFetcher, MockIPSWFetcher, MockMESUFetcher, MockSwiftVersionFetcher, MockXcodeReleasesFetcher, MockCloudKitService, MockURLProtocol, MockFetcherError

    • Added internal to all struct/class/enum declarations
    • Added internal to all properties and methods
    • Fixed 2 conditional_returns_on_newline in MockCloudKitService

  • Utilities/ (3 files): TestFixtures, FieldValue+Assertions, MockRecordInfo

    • Added internal to all static properties (33 fixtures in TestFixtures)
    • Fixed 2 multiline_arguments_brackets
    • Fixed 1 type_contents_order (moved url() helper after all static properties)
    • Fixed 2 duplicate access modifiers (private internal → private)

  • Models/ (4 files): RestoreImageRecordTests, XcodeVersionRecordTests, SwiftVersionRecordTests, DataSourceMetadataTests

    • Added internal to all test structs and methods

  • CloudKit/ (2 files): MockCloudKitServiceTests, PEMValidatorTests

    • Added internal to all test structs and methods

  • Configuration/ (2 files): ConfigurationLoaderTests, FetchConfigurationTests

    • Added internal to all test structs and methods
    • Fixed 1 type_contents_order (moved createLoader helper after nested types)
    • Fixed 1 duplicate access modifier

  • DataSources/ (11 files): All deduplication, merge, and fetcher tests

    • Added internal to all test structs and methods
    • Fixed 2 multiline_arguments_brackets in VirtualBuddyFetcherTests

  • ErrorHandling/ (4 files): All error handling tests

    • Added internal to all test structs and methods

  • Extensions/ (1 file): FieldValueURLTests

    • Added internal to all test methods
    • Fixed 1 line_length (split long URL string)

  • ConfigKeyKitTests/ (4 files): ConfigKeyTests, ConfigKeySourceTests, NamingStyleTests, OptionalConfigKeyTests

    • Added internal to all test structs and methods
    • Fixed 2 multiline_arguments_brackets in ConfigKeyTests

Key change: All 390+ explicit_acl violations in test files resolved

ConfigKey Framework Fixed (1 file):

65. ConfigKey.swift ✅

  • Fixed type_contents_order: Moved boolDefault property before initializers (lines 139, 154)
  • Key change: Properties now correctly appear before initializers in Bool extension

Phase 5 Statistics:

  • Total files fixed: ~65 files
  • explicit_acl violations fixed: 400+
  • type_contents_order violations fixed: 30+
  • conditional_returns_on_newline violations fixed: 10+
  • line_length violations fixed: 5+
  • multiline_arguments_brackets violations fixed: 15+
  • Build status: ✅ All builds successful
  • Final verification: ✅ 0 remaining violations for target rules

Access Control Strategy Used

  • internal - Default for most declarations (structs, classes, functions, properties)
  • public - Only for:
    • CloudKitRecord protocol conformances (in Extensions/*+CloudKit.swift)
    • Public APIs explicitly exported (BushelCloudKitService, SyncEngine, commands)
  • private - File-scoped utilities and nested helper types

Type Contents Order Standard

Correct order within a type:

  1. type_property (static let/var)
  2. subtype (nested types)
  3. instance_property (let/var)
  4. initializer (init)
  5. type_method (static func)
  6. other_method (instance func)

Common Patterns Used

1. Line Length Fixes

// Before (too long)
print("Very long message with \(interpolation) and more \(stuff)")

// After (split with string concatenation)
print(
  "Very long message with \(interpolation) " +
    "and more \(stuff)"
)

// OR use multi-line string literal for logging
logger.debug(
  """
  Very long message with \(interpolation) \
  and more \(stuff)
  """
)

2. Conditional Returns on Newline

// Before
guard condition else { return }

// After
guard condition else {
  return
}

3. Multiline Arguments Brackets

// Before
let obj = SomeType(
  arg1: value1,
  arg2: value2)

// After
let obj = SomeType(
  arg1: value1,
  arg2: value2
)

Important Notes

  1. Codable Structs: When adding access control to Codable struct properties, they must be internal (not private) for the memberwise initializer to work.

  2. OSLogMessage: Cannot use string concatenation (+) with Logger.debug(). Must use multi-line string literals with \ continuation instead.

  3. Discouraged Optional Boolean: We're skipping all 13 violations in DataSourcePipeline+Deduplication.swift as the tri-state Bool? is intentional for signing status (true/false/unknown).

  4. Build Status: After each file fix, run swift build to verify. All changes so far compile successfully.

Testing Strategy

After each phase:

  1. Run LINT_MODE=STRICT ./Scripts/lint.sh to verify fixes
  2. Run swift build to ensure no compilation errors
  3. Run swift test to ensure tests still pass

Estimated Remaining Work

  • Phase 1: 2 files (~30 minutes)
  • Phase 2: 5 files (~45 minutes)
  • Phase 3: 3 files (~20 minutes)
  • Phase 4: 5 files (~30 minutes)
  • Phase 5: ~60 test files (~90 minutes using bulk pattern matching)

Total remaining: ~3-4 hours of focused work

Final Violation Count

  • Before: ~900 total violations
  • After ALL Phases: ~300 violations (all out-of-scope items)
  • Target violations FIXED:
    • explicit_acl: ~450 violations fixed
    • type_contents_order: ~40 violations fixed
    • conditional_returns_on_newline: ~15 violations fixed
    • line_length: ~10 violations fixed
    • multiline_arguments_brackets: ~20 violations fixed
    • explicit_top_level_acl: ~5 violations fixed
  • Total fixed: ~540 violations across 83 files

All Files Modified (83 total)

Phase 1: High-Impact Files (5 files)

  1. SyncEngine.swift
  2. ExportCommand.swift
  3. VirtualBuddyFetcher.swift
  4. BushelCloudKitService.swift
  5. PEMValidator.swift

Phase 2: Data Source Files (5 files)

  1. DataSourcePipeline+Deduplication.swift
  2. XcodeReleasesFetcher.swift
  3. MrMacintoshFetcher.swift
  4. SwiftVersionFetcher.swift
  5. MESUFetcher.swift

Phase 3: Configuration Files (3 files)

  1. ConfigurationLoader.swift
  2. ConfigurationKeys.swift
  3. CloudKitConfiguration.swift

Phase 4: CloudKit Extensions (5 files)

  1. RestoreImageRecord+CloudKit.swift
  2. XcodeVersionRecord+CloudKit.swift
  3. SwiftVersionRecord+CloudKit.swift
  4. DataSourceMetadata+CloudKit.swift
  5. FieldValue+URL.swift

Phase 5: Remaining Source and Test Files (65 files)

Source Files (21): 19. ConsoleOutput.swift 20. SyncEngine+Export.swift 21. IPSWFetcher.swift 22. DataSourcePipeline.swift 23. DataSourcePipeline+Fetchers.swift 24. DataSourcePipeline+ReferenceResolution.swift 25-32. AppleDB Models (8 files) 33-37. TheAppleWiki Models (5 files) 38-43. Fetchers (6 files: Xcode, Swift, MESU, AppleDB, MrMacintosh, TheAppleWiki) 44. ConfigKey.swift

Test Files (38+ files): 45-52. Mocks (8 files) 53-55. Utilities (3 files) 56-59. Models Tests (4 files) 60-61. CloudKit Tests (2 files) 62-63. Configuration Tests (2 files) 64-74. DataSources Tests (11 files) 75-78. ErrorHandling Tests (4 files) 79. Extensions Tests (1 file) 80-83. ConfigKeyKit Tests (4 files)

✨ ALL PHASES COMPLETE! ✨

  1. ✅ Phase 1 Complete! All 5 high-impact files have been fixed.

  2. ✅ Phase 2 Complete! All 5 data source files have been fixed.

  3. ✅ Phase 3 Complete! All 3 configuration files have been fixed.

  4. ✅ Phase 4 Complete! All 5 CloudKit extension files have been fixed.

  5. ✅ Phase 5 Complete! All ~65 remaining source and test files have been fixed.

Out of Scope (Not Being Fixed)

  • file_length violations (requires splitting files)
  • file_types_order violations (4 total, per user decision)
  • function_body_length violations (requires refactoring logic)
  • cyclomatic_complexity violations (requires simplifying logic)
  • discouraged_optional_boolean (intentional design)
  • force_unwrapping violations (requires architectural changes)
  • missing_docs violations (requires writing documentation)

Reference Documentation

  • Original plan: /Users/leo/.claude/plans/expressive-cuddling-walrus.md
  • SwiftLint rules: https://realm.github.io/SwiftLint/
  • Type contents order: Nested types → Properties → Initializers → Methods