Better rubocopping (inherit from rubocop-shopify)

Signed-off-by: Jonathan Pulsifer <[email protected]>

.rubocop.yml

@@ -1,93 +1,16 @@
 # This file strictly follows the rules defined in the Ruby style guide:
 #   http://shopify.github.io/ruby-style-guide/
+inherit_gem:
+  rubocop-shopify: rubocop.yml
 
 AllCops:
   TargetRubyVersion: 2.6
+  SuggestExtensions: false
 
 # Allow .ruby-version and spec.required_ruby_version to differ
 # to run a newer Ruby version for Rubocop, but don't force users to upgrade
 Gemspec/RequiredRubyVersion:
   Enabled: false
 
-Rails:
-  Enabled: false
-
-Lint/AssignmentInCondition:
-  Enabled: false
-
-Style/Documentation:
-  Enabled: false
-
-Layout/MultilineOperationIndentation:
-  Enabled: false
-
-Layout/AlignParameters:
-  EnforcedStyle: with_fixed_indentation
-
-Layout/IndentFirstArgument:
-  EnforcedStyle: consistent
-
-Style/TrailingCommaInArrayLiteral:
-  Enabled: false
-
-Style/SignalException:
-  EnforcedStyle: only_raise
-
-Style/NumericLiterals:
-  Enabled: false
-
-Layout/CaseIndentation:
-  EnforcedStyle: end
-
-Layout/IndentFirstHashElement:
-  EnforcedStyle: consistent
-
-Style/WordArray:
-  Enabled: false
-
-Metrics/AbcSize:
-  Enabled: false
-
-Metrics/CyclomaticComplexity:
-  Enabled: false
-
-Style/StringLiterals:
-  Enabled: false
-
-Metrics/LineLength:
-  Max: 120
-
-Metrics/ClassLength:
-  Enabled: false
-
-Metrics/MethodLength:
-  Enabled: false
-
-Metrics/BlockLength:
-  Exclude:
-    - "**/*_spec.rb"
-
-Metrics/ParameterLists:
-  Max: 5
-  CountKeywordArgs: false
-
-Metrics/PerceivedComplexity:
-  Enabled: false
-
-Layout/EndAlignment:
-  EnforcedStyleAlignWith: variable
-
 Style/FrozenStringLiteralComment:
   Enabled: false
-
-Style/Alias:
-  EnforcedStyle: prefer_alias_method
-
-Style/MutableConstant:
-  Enabled: false
-
-Performance/Casecmp:
-  Enabled: false
-
-Style/GuardClause:
-  Enabled: false

Gemfile

@@ -1,8 +1,10 @@
+# frozen_string_literal: true
 source 'https://rubygems.org'
 
 gem 'byebug'
 gem 'rake'
 gem 'rubocop'
+gem 'rubocop-shopify', require: false
 gem 'yard'
 
 group :test do