realm/swiftlint

★ 19,567SwiftAudience · developerComplexity · 2/5Setup · easy

Mindmap

mindmap
  root((repo))
    What it does
      Checks Swift code style
      Enforces conventions
      Auto-fixes violations
    How it works
      Analyzes Swift files
      Integrates with Xcode
      Runs in CI pipelines
    Tech
      Swift
      SwiftSyntax
      SourceKit
    Use cases
      Enforce team standards
      Catch style issues
      Auto-fix formatting
    Platforms
      iOS development
      macOS development

mindmap root((repo)) What it does Checks Swift code style Enforces conventions Auto-fixes violations How it works Analyzes Swift files Integrates with Xcode Runs in CI pipelines Tech Swift SwiftSyntax SourceKit Use cases Enforce team standards Catch style issues Auto-fix formatting Platforms iOS development macOS development

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Things people build with this

USE CASE 1

Automatically flag style issues like overly long lines and unnecessary forced unwrapping in your Swift project.

USE CASE 2

Enforce consistent code conventions across a team without relying on manual code review.

USE CASE 3

Auto-fix common style violations in your Swift codebase by running SwiftLint with the fix flag.

Tech stack

SwiftSwiftSyntaxClangSourceKitXcode

Getting it running

Difficulty · easy Time to first run · 30min

In plain English

SwiftLint is a command-line tool that automatically checks Swift source code for style problems and enforces coding conventions. A linter is a program that reads your code and flags issues, not bugs, but stylistic inconsistencies that make code harder to read and maintain, like lines that are too long, inconsistent naming, unnecessary forced unwrapping, or unused variables. SwiftLint helps teams keep their Swift code consistent without relying on manual code review to catch every formatting issue. It works by analyzing Swift files using SwiftSyntax (the official Swift compiler's parsing infrastructure) and, for some rules, also hooks into Clang and SourceKit to access type information. The tool integrates directly into Xcode so violations are highlighted in the editor as you code, or it can run as a build step so the build fails if rules are violated. You can configure which rules apply to your project through a configuration file, and it supports auto-correction for many rules, running SwiftLint with the fix flag will automatically reformat code to comply with the rules. Installation options include Homebrew (the most common), Swift Package Manager, CocoaPods, Mint, and Bazel. SwiftLint is used by any iOS, macOS, tvOS, or watchOS developer working in Swift who wants to maintain a consistent codebase, enforce team coding standards, or catch common style issues automatically during development or in a CI pipeline.

Copy-paste prompts

Prompt 1

Set up SwiftLint in my Xcode project so style violations appear as warnings in the editor while I code.

Prompt 2

Create a .swiftlint.yml configuration file that disables the line_length rule and treats force_unwrapping as an error for my team's iOS project.

Prompt 3

Add SwiftLint as a build phase in my Xcode project so the build fails if any SwiftLint rules are violated.

Prompt 4

How do I run SwiftLint in GitHub Actions CI to automatically check Swift code on every pull request?

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