Swift Lint Rules

.swiftlint.yml

opt_in_rules: # some rules are only opt-in
  # - missing_docs
  - attributes
  - closure_end_indentation
  - closure_spacing
  - empty_count
  - explicit_init
  - explicit_top_level_acl
  - extension_access_modifier
  - fatal_error_message
  - multiline_parameters
  - vertical_parameter_alignment_on_call
  - first_where
  - force_unwrapping
  - implicit_return
  - implicitly_unwrapped_optional
  - joined_default_parameter
  - let_var_whitespace
  - nimble_operator
  - no_grouping_extension
  - number_separator
  - object_literal
  - operator_usage_whitespace
  - overridden_super_call
  - pattern_matching_keywords
  - private_outlet
  - private_over_fileprivate
  - prohibited_super_call
  - quick_discouraged_call
  - redundant_nil_coalescing
  - single_test_class
  - sorted_imports
  - switch_case_on_newline
  - trailing_closure
  - unneeded_parentheses_in_closure_argument
  
  # Find all the available rules by running:
  # swiftlint rules

# https://developer.apple.com/library/content/documentation/Swift/Conceptual/Swift_Programming_Language/Attributes.html
attributes: 
  always_on_same_line:
    - "@IBAction"
    - "@IBInspectable"
    - "@IBDesignable"
    - "@IBOutlet"
    - "@NSManaged"
    - "@discardableResult"
    - "@GKInspectable"
    - "@nonobjc"
    - "@NSCopying"
    - "@objc"
  always_on_line_above:
    - "@available"
    - "@NSApplicationMain"
    - "@testable"
    - "@UIApplicationMain"

included: # paths to include during linting. `--path` is ignored if present.
  - Sources
excluded: # paths to ignore during linting. Takes precedence over `included`.
  - Pods

# configurable rules can be customized from this configuration file
# binary rules can set their severity level
force_cast: error # implicitly
force_try:
  severity: error # explicitly
# rules that have both warning and error levels, can set just the warning level
# implicitly
line_length: 120
# they can set both implicitly with an array
type_body_length:
  - 300 # warning
  - 400 # error
# or they can set both explicitly
file_length:
  warning: 500
  error: 1000
  ignore_comment_only_lines: true
# naming rules can set warnings/errors for min_length and max_length
# additionally they can set excluded names
generic_type_name:
  min_length: 1
  max_length:
    warning: 40
    error: 64
type_name:
  min_length: 4 # only warning
  max_length: # warning and error
    warning: 40
    error: 64
  excluded: 
    - Log
identifier_name:
  min_length: # only min_length
    error: 3 # only error
  excluded:
    - op    
    - id
    - key
    - URL
    - url
    - GlobalAPIKey

nesting:
  type_level:
    warning: 3
    error: 5
  statement_level:
    warning: 5
    error: 6
statement_position: 
  statement_mode: uncuddled_else
reporter: "xcode" # reporter type (xcode, json, csv, checkstyle, junit, html, emoji)

object_literal: 
  code_literal: false
  image_literal: false
  color_literal: false