diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 440d07fb3e..f17db8b4ee 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -120,8 +120,7 @@ jobs:
     - name: Run brew audit --skip-style on all taps
       run: brew audit --skip-style
 
-    # TODO: remove --quiet when possible.
-    - run: brew typecheck --quiet
+    - run: brew typecheck
 
     - name: Run vale for docs linting
       run: |
diff --git a/.gitignore b/.gitignore
index 49f15cd5b0..8786b176d2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -35,6 +35,7 @@
 !**/vendor/bundle/ruby/*/gems/*/lib
 !**/vendor/bundle/ruby/*/gems/rubocop-performance-*/config
 !**/vendor/bundle/ruby/*/gems/rubocop-rspec-*/config
+!**/vendor/bundle/ruby/*/gems/rubocop-sorbet-*/config
 
 # Ignore partially included gems where we don't need all files
 **/vendor/bundle/ruby/*/gems/activesupport-*/lib/active_support.rb
@@ -134,6 +135,7 @@
 **/vendor/bundle/ruby/*/gems/simplecov-html-*/
 **/vendor/bundle/ruby/*/gems/sorbet-*/
 **/vendor/bundle/ruby/*/gems/sorbet-runtime-*/
+!**/vendor/bundle/ruby/*/gems/sorbet-runtime-stub-*/
 **/vendor/bundle/ruby/*/gems/spoom-*/
 **/vendor/bundle/ruby/*/gems/stackprof-*/
 **/vendor/bundle/ruby/*/gems/strscan-*/
diff --git a/Library/.rubocop.yml b/Library/.rubocop.yml
index e87f5d9c58..7653a9495c 100644
--- a/Library/.rubocop.yml
+++ b/Library/.rubocop.yml
@@ -264,6 +264,14 @@ Layout/LineLength:
                     ' "~/Library/Application Support/', '"~/Library/Caches/', '"~/Application Support',
                     ' was verified as official when first introduced to the cask']
 
+# Enable once we are using `sorbet-runtime`.
+Sorbet/FalseSigil:
+  Enabled: false
+
+# Try getting rid of these.
+Sorbet/ConstantsFromStrings:
+  Enabled: false
+
 # Avoid false positives on modifiers used on symbols of methods
 # See https://github.com/rubocop-hq/rubocop/issues/5953
 Style/AccessModifierDeclarations:
diff --git a/Library/Homebrew/Gemfile b/Library/Homebrew/Gemfile
index 776b7abe6c..57014db73f 100644
--- a/Library/Homebrew/Gemfile
+++ b/Library/Homebrew/Gemfile
@@ -25,4 +25,6 @@ gem "patchelf"
 gem "plist"
 gem "rubocop-performance"
 gem "rubocop-rspec"
+gem "rubocop-sorbet"
 gem "ruby-macho"
+gem "sorbet-runtime-stub"
diff --git a/Library/Homebrew/Gemfile.lock b/Library/Homebrew/Gemfile.lock
index b4d08c5b50..1279c0becf 100644
--- a/Library/Homebrew/Gemfile.lock
+++ b/Library/Homebrew/Gemfile.lock
@@ -114,6 +114,8 @@ GEM
       rubocop-ast (>= 0.4.0)
     rubocop-rspec (1.43.2)
       rubocop (~> 0.87)
+    rubocop-sorbet (0.5.1)
+      rubocop
     ruby-macho (2.2.0)
     ruby-progressbar (1.10.1)
     simplecov (0.19.0)
@@ -123,6 +125,7 @@ GEM
     sorbet (0.5.5942)
       sorbet-static (= 0.5.5942)
     sorbet-runtime (0.5.5942)
+    sorbet-runtime-stub (0.2.0)
     sorbet-static (0.5.5942-universal-darwin-14)
     spoom (1.0.4)
       colorize
@@ -167,10 +170,12 @@ DEPENDENCIES
   rubocop
   rubocop-performance
   rubocop-rspec
+  rubocop-sorbet
   ruby-macho
   simplecov
   sorbet
   sorbet-runtime
+  sorbet-runtime-stub
   tapioca
 
 BUNDLED WITH
diff --git a/Library/Homebrew/cask/dsl/conflicts_with.rb b/Library/Homebrew/cask/dsl/conflicts_with.rb
index d5de4edeb9..f49f3a0620 100644
--- a/Library/Homebrew/cask/dsl/conflicts_with.rb
+++ b/Library/Homebrew/cask/dsl/conflicts_with.rb
@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+require "delegate"
+
 require "extend/hash_validator"
 using HashValidator
 
@@ -8,7 +10,7 @@ module Cask
     # Class corresponding to the `conflicts_with` stanza.
     #
     # @api private
-    class ConflictsWith < DelegateClass(Hash)
+    class ConflictsWith < SimpleDelegator
       VALID_KEYS = [
         :formula,
         :cask,
@@ -18,12 +20,13 @@ module Cask
         :java,
       ].freeze
 
-      def initialize(**pairs)
-        pairs.assert_valid_keys!(*VALID_KEYS)
+      def initialize(**options)
+        options.assert_valid_keys!(*VALID_KEYS)
 
-        super(pairs.transform_values { |v| Set.new(Array(v)) })
+        conflicts = options.transform_values { |v| Set.new(Array(v)) }
+        conflicts.default = Set.new
 
-        self.default = Set.new
+        super(conflicts)
       end
 
       def to_json(generator)
diff --git a/Library/Homebrew/cask/dsl/depends_on.rb b/Library/Homebrew/cask/dsl/depends_on.rb
index e8beba968d..a3721b0530 100644
--- a/Library/Homebrew/cask/dsl/depends_on.rb
+++ b/Library/Homebrew/cask/dsl/depends_on.rb
@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+require "delegate"
+
 require "requirements/macos_requirement"
 
 module Cask
@@ -7,7 +9,7 @@ module Cask
     # Class corresponding to the `depends_on` stanza.
     #
     # @api private
-    class DependsOn < DelegateClass(Hash)
+    class DependsOn < SimpleDelegator
       VALID_KEYS = Set.new([
                              :formula,
                              :cask,
diff --git a/Library/Homebrew/cask/url.rb b/Library/Homebrew/cask/url.rb
index 2e59372f9d..723647ecfd 100644
--- a/Library/Homebrew/cask/url.rb
+++ b/Library/Homebrew/cask/url.rb
@@ -1,32 +1,63 @@
+# typed: strict
 # frozen_string_literal: true
 
 # Class corresponding to the `url` stanza.
 #
 # @api private
 class URL
-  ATTRIBUTES = [
-    :using,
-    :tag, :branch, :revisions, :revision,
-    :trust_cert, :cookies, :referer, :user_agent,
-    :data
-  ].freeze
-  private_constant :ATTRIBUTES
+  extend T::Sig
 
-  attr_reader :uri, :specs, *ATTRIBUTES
+  attr_reader :uri, :specs,
+              :using,
+              :tag, :branch, :revisions, :revision,
+              :trust_cert, :cookies, :referer, :user_agent,
+              :data
 
   extend Forwardable
   def_delegators :uri, :path, :scheme, :to_s
 
-  def initialize(uri, **options)
-    @uri        = URI(uri)
-    @user_agent = :default
+  sig do
+    params(
+      uri:        T.any(URI::Generic, String),
+      using:      T.nilable(Symbol),
+      tag:        T.nilable(String),
+      branch:     T.nilable(String),
+      revisions:  T.nilable(T::Array[String]),
+      revision:   T.nilable(String),
+      trust_cert: T.nilable(T::Boolean),
+      cookies:    T.nilable(T::Hash[String, String]),
+      referer:    T.nilable(T.any(URI::Generic, String)),
+      user_agent: T.nilable(T.any(Symbol, String)),
+      data:       T.nilable(T::Hash[String, String]),
+    ).returns(T.untyped)
+  end
+  def initialize(
+    uri,
+    using: nil,
+    tag: nil,
+    branch: nil,
+    revisions: nil,
+    revision: nil,
+    trust_cert: nil,
+    cookies: nil,
+    referer: nil,
+    user_agent: nil,
+    data: nil
+  )
+    @uri = URI(uri)
 
-    ATTRIBUTES.each do |attribute|
-      next unless options.key?(attribute)
+    specs = {}
+    specs[:using]      = @using      = using
+    specs[:tag]        = @tag        = tag
+    specs[:branch]     = @branch     = branch
+    specs[:revisions]  = @revisions  = revisions
+    specs[:revision]   = @revision   = revision
+    specs[:trust_cert] = @trust_cert = trust_cert
+    specs[:cookies]    = @cookies    = cookies
+    specs[:referer]    = @referer    = referer
+    specs[:user_agent] = @user_agent = user_agent || :default
+    specs[:data]       = @data       = data
 
-      instance_variable_set("@#{attribute}", options[attribute])
-    end
-
-    @specs = options
+    @specs = specs.compact
   end
 end
diff --git a/Library/Homebrew/commands.rb b/Library/Homebrew/commands.rb
index e453a5086e..4654d4e580 100644
--- a/Library/Homebrew/commands.rb
+++ b/Library/Homebrew/commands.rb
@@ -27,6 +27,7 @@ module Commands
     "environment" => "--env",
     "--config"    => "config",
     "-v"          => "--version",
+    "tc"          => "typecheck",
   }.freeze
 
   def valid_internal_cmd?(cmd)
diff --git a/Library/Homebrew/debrew/irb.rb b/Library/Homebrew/debrew/irb.rb
index e37d35b92c..b88aa44c73 100644
--- a/Library/Homebrew/debrew/irb.rb
+++ b/Library/Homebrew/debrew/irb.rb
@@ -4,34 +4,30 @@ require "irb"
 
 # @private
 module IRB
-  @setup_done = false
+  def self.parse_opts(argv: nil); end
 
-  extend Module.new {
-    def parse_opts; end
-
-    def start_within(binding)
-      unless @setup_done
-        setup(nil, argv: [])
-        @setup_done = true
-      end
-
-      workspace = WorkSpace.new(binding)
-      irb = Irb.new(workspace)
-
-      @CONF[:IRB_RC]&.call(irb.context)
-      @CONF[:MAIN_CONTEXT] = irb.context
-
-      trap("SIGINT") do
-        irb.signal_handle
-      end
-
-      begin
-        catch(:IRB_EXIT) do
-          irb.eval_input
-        end
-      ensure
-        irb_at_exit
-      end
+  def self.start_within(binding)
+    unless @setup_done
+      setup(nil, argv: [])
+      @setup_done = true
     end
-  }
+
+    workspace = WorkSpace.new(binding)
+    irb = Irb.new(workspace)
+
+    @CONF[:IRB_RC]&.call(irb.context)
+    @CONF[:MAIN_CONTEXT] = irb.context
+
+    trap("SIGINT") do
+      irb.signal_handle
+    end
+
+    begin
+      catch(:IRB_EXIT) do
+        irb.eval_input
+      end
+    ensure
+      irb_at_exit
+    end
+  end
 end
diff --git a/Library/Homebrew/dependencies.rb b/Library/Homebrew/dependencies.rb
index 6a39871b13..07d79190d5 100644
--- a/Library/Homebrew/dependencies.rb
+++ b/Library/Homebrew/dependencies.rb
@@ -6,7 +6,7 @@ require "cask_dependent"
 # A collection of dependencies.
 #
 # @api private
-class Dependencies < DelegateClass(Array)
+class Dependencies < SimpleDelegator
   def initialize(*args)
     super(args)
   end
@@ -41,7 +41,7 @@ end
 # A collection of requirements.
 #
 # @api private
-class Requirements < DelegateClass(Set)
+class Requirements < SimpleDelegator
   def initialize(*args)
     super(Set.new(args))
   end
diff --git a/Library/Homebrew/dev-cmd/tests.rb b/Library/Homebrew/dev-cmd/tests.rb
index db91f4fc8b..7512cabb88 100644
--- a/Library/Homebrew/dev-cmd/tests.rb
+++ b/Library/Homebrew/dev-cmd/tests.rb
@@ -58,6 +58,7 @@ module Homebrew
       ENV["HOMEBREW_NO_COMPAT"] = "1" if args.no_compat?
       ENV["HOMEBREW_TEST_GENERIC_OS"] = "1" if args.generic?
       ENV["HOMEBREW_TEST_ONLINE"] = "1" if args.online?
+      ENV["HOMEBREW_SORBET_RUNTIME"] = "1"
 
       ENV["USER"] ||= system_command!("id", args: ["-nu"]).stdout.chomp
 
diff --git a/Library/Homebrew/env_config.rb b/Library/Homebrew/env_config.rb
index 30d56dff17..747906d200 100644
--- a/Library/Homebrew/env_config.rb
+++ b/Library/Homebrew/env_config.rb
@@ -251,6 +251,10 @@ module Homebrew
                      "of macOS. This is useful in development on new macOS versions.",
         boolean:     true,
       },
+      HOMEBREW_SORBET_RUNTIME:                {
+        description: "Enable runtime typechecking using Sorbet.",
+        boolean:     true,
+      },
       HOMEBREW_SVN:                           {
         description:  "Use this as the `svn`(1) binary.",
         default_text: "A Homebrew-built Subversion (if installed), or the system-provided binary.",
diff --git a/Library/Homebrew/extend/os/mac/unpack_strategy/zip.rb b/Library/Homebrew/extend/os/mac/unpack_strategy/zip.rb
index b6bf16fa23..fa619816d9 100644
--- a/Library/Homebrew/extend/os/mac/unpack_strategy/zip.rb
+++ b/Library/Homebrew/extend/os/mac/unpack_strategy/zip.rb
@@ -2,7 +2,7 @@
 
 module UnpackStrategy
   class Zip
-    prepend Module.new {
+    module MacOSZipExtension
       def extract_to_dir(unpack_dir, basename:, verbose:)
         if merge_xattrs && contains_extended_attributes?(path)
           # We use ditto directly, because dot_clean has issues if the __MACOSX
@@ -46,6 +46,9 @@ module UnpackStrategy
           end
         end
       end
-    }
+    end
+    private_constant :MacOSZipExtension
+
+    prepend MacOSZipExtension
   end
 end
diff --git a/Library/Homebrew/global.rb b/Library/Homebrew/global.rb
index 227e581f8e..ac124aa09c 100644
--- a/Library/Homebrew/global.rb
+++ b/Library/Homebrew/global.rb
@@ -31,6 +31,8 @@ ActiveSupport::Inflector.inflections(:en) do |inflect|
   inflect.irregular "it", "they"
 end
 
+require "utils/sorbet"
+
 HOMEBREW_BOTTLE_DEFAULT_DOMAIN = ENV["HOMEBREW_BOTTLE_DEFAULT_DOMAIN"]
 HOMEBREW_BREW_DEFAULT_GIT_REMOTE = ENV["HOMEBREW_BREW_DEFAULT_GIT_REMOTE"]
 HOMEBREW_CORE_DEFAULT_GIT_REMOTE = ENV["HOMEBREW_CORE_DEFAULT_GIT_REMOTE"]
diff --git a/Library/Homebrew/rubocops.rb b/Library/Homebrew/rubocops.rb
index 76b8d207b8..b2b748bb03 100644
--- a/Library/Homebrew/rubocops.rb
+++ b/Library/Homebrew/rubocops.rb
@@ -4,6 +4,8 @@ require_relative "load_path"
 
 require "rubocop-performance"
 require "rubocop-rspec"
+require "rubocop-sorbet"
+
 require "rubocops/formula_desc"
 require "rubocops/components_order"
 require "rubocops/components_redundancy"
diff --git a/Library/Homebrew/sorbet/config b/Library/Homebrew/sorbet/config
index d633b4b3ad..02fbf5ab02 100644
--- a/Library/Homebrew/sorbet/config
+++ b/Library/Homebrew/sorbet/config
@@ -3,3 +3,6 @@
 
 --ignore
 /vendor
+
+--ignore
+/test/.gem
diff --git a/Library/Homebrew/sorbet/rbi/utils/user.rbi b/Library/Homebrew/sorbet/rbi/utils/user.rbi
index 49e9f1b3f4..ef1997fafd 100644
--- a/Library/Homebrew/sorbet/rbi/utils/user.rbi
+++ b/Library/Homebrew/sorbet/rbi/utils/user.rbi
@@ -1,9 +1,11 @@
 # typed: strict
 
-class User < String
-  def gui?
-  end
+class User < SimpleDelegator
+  include Kernel
 
-  def self.current
-  end
+  sig { returns(T::Boolean) }
+  def gui?; end
+
+  sig { returns(T.nilable(T.attached_class)) }
+  def self.current; end
 end
diff --git a/Library/Homebrew/sorbet/tapioca/require.rb b/Library/Homebrew/sorbet/tapioca/require.rb
index ac84d1d3f0..fe1388b13a 100644
--- a/Library/Homebrew/sorbet/tapioca/require.rb
+++ b/Library/Homebrew/sorbet/tapioca/require.rb
@@ -1,4 +1,4 @@
-# frozen_string_literal: true
 # typed: false
+# frozen_string_literal: true
 
 # Add your extra requires here
diff --git a/Library/Homebrew/utils/sorbet.rb b/Library/Homebrew/utils/sorbet.rb
new file mode 100644
index 0000000000..c4caa0a9a2
--- /dev/null
+++ b/Library/Homebrew/utils/sorbet.rb
@@ -0,0 +1,10 @@
+# typed: strict
+# frozen_string_literal: true
+
+if ENV["HOMEBREW_SORBET_RUNTIME"]
+  require "utils/gems"
+  Homebrew.install_bundler_gems!
+  require "sorbet-runtime"
+else
+  require "sorbet-runtime-stub"
+end
diff --git a/Library/Homebrew/utils/user.rb b/Library/Homebrew/utils/user.rb
index 0d5b94fb34..d40a7b6072 100644
--- a/Library/Homebrew/utils/user.rb
+++ b/Library/Homebrew/utils/user.rb
@@ -8,7 +8,7 @@ require "system_command"
 # A system user.
 #
 # @api private
-class User < DelegateClass(String)
+class User < SimpleDelegator
   # Return whether the user has an active GUI session.
   def gui?
     out, _, status = system_command "who"
diff --git a/Library/Homebrew/vendor/bundle/bundler/setup.rb b/Library/Homebrew/vendor/bundle/bundler/setup.rb
index ff51c2cae9..89d30e2fef 100644
--- a/Library/Homebrew/vendor/bundle/bundler/setup.rb
+++ b/Library/Homebrew/vendor/bundle/bundler/setup.rb
@@ -75,9 +75,11 @@ $:.unshift "#{path}/../#{ruby_engine}/#{ruby_version}/gems/unicode-display_width
 $:.unshift "#{path}/../#{ruby_engine}/#{ruby_version}/gems/rubocop-0.92.0/lib"
 $:.unshift "#{path}/../#{ruby_engine}/#{ruby_version}/gems/rubocop-performance-1.8.1/lib"
 $:.unshift "#{path}/../#{ruby_engine}/#{ruby_version}/gems/rubocop-rspec-1.43.2/lib"
+$:.unshift "#{path}/../#{ruby_engine}/#{ruby_version}/gems/rubocop-sorbet-0.5.1/lib"
 $:.unshift "#{path}/../#{ruby_engine}/#{ruby_version}/gems/ruby-macho-2.2.0/lib"
 $:.unshift "#{path}/../#{ruby_engine}/#{ruby_version}/gems/sorbet-static-0.5.5942-universal-darwin-19/lib"
 $:.unshift "#{path}/../#{ruby_engine}/#{ruby_version}/gems/sorbet-0.5.5942/lib"
+$:.unshift "#{path}/../#{ruby_engine}/#{ruby_version}/gems/sorbet-runtime-stub-0.2.0/lib"
 $:.unshift "#{path}/../#{ruby_engine}/#{ruby_version}/gems/thor-1.0.1/lib"
 $:.unshift "#{path}/../#{ruby_engine}/#{ruby_version}/gems/spoom-1.0.4/lib"
 $:.unshift "#{path}/../#{ruby_engine}/#{ruby_version}/gems/tapioca-0.4.7/lib"
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/config/default.yml b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/config/default.yml
new file mode 100644
index 0000000000..4e1602c037
--- /dev/null
+++ b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/config/default.yml
@@ -0,0 +1,128 @@
+inherit_mode:
+  merge:
+  - Exclude
+
+Sorbet/AllowIncompatibleOverride:
+  Description: 'Disallows using `.override(allow_incompatible: true)`.'
+  Enabled: true
+  VersionAdded: 0.2.0
+
+Sorbet/BindingConstantWithoutTypeAlias:
+  Description: >-
+                  Disallows binding the return value of `T.any`, `T.all`, `T.enum`
+                  to a constant directly. To bind the value, one must use `T.type_alias`.
+  Enabled: true
+  VersionAdded: 0.2.0
+
+Sorbet/CheckedTrueInSignature:
+  Description: 'Disallows the usage of `checked(true)` in signatures.'
+  Enabled: true
+  VersionAdded: 0.2.0
+
+Sorbet/ConstantsFromStrings:
+  Description: >-
+                  Forbids constant access through meta-programming.
+
+                  For example, things like `constantize` or `const_get`
+                  are forbidden.
+  Enabled: true
+  VersionAdded: 0.2.0
+
+Sorbet/EnforceSigilOrder:
+  Description: 'Ensures that Sorbet sigil comes first in a file.'
+  Enabled: true
+  VersionAdded: 0.3.4
+
+Sorbet/EnforceSignatures:
+  Description: 'Ensures all methods have a valid signature.'
+  Enabled: false
+  VersionAdded: 0.3.4
+
+Sorbet/FalseSigil:
+  Description: 'All files must be at least at strictness `false`.'
+  Enabled: true
+  VersionAdded: 0.3.3
+  SuggestedStrictness: true
+  Include:
+  - "**/*.rb"
+  - "**/*.rbi"
+  - "**/*.rake"
+  - "**/*.ru"
+  Exclude:
+  - bin/**/*
+  - db/**/*.rb
+  - script/**/*
+
+Sorbet/ForbidIncludeConstLiteral:
+  Description: 'Forbids include of non-literal constants.'
+  Enabled: false
+  VersionAdded: 0.2.0
+  VersionChanged: 0.5.0
+
+Sorbet/ForbidSuperclassConstLiteral:
+  Description: 'Forbid superclasses which are non-literal constants.'
+  Enabled: false
+  VersionAdded: 0.2.0
+  VersionChanged: 0.5.0
+
+Sorbet/ForbidUntypedStructProps:
+  Description: >-
+                  Disallows use of `T.untyped` or `T.nilable(T.untyped)` as a
+                  prop type for `T::Struct` subclasses.
+  Enabled: true
+  VersionAdded: 0.4.0
+
+Sorbet/HasSigil:
+  Description: 'Makes the Sorbet typed sigil mandatory in all files.'
+  Enabled: false
+  VersionAdded: 0.3.3
+
+Sorbet/IgnoreSigil:
+  Description: 'All files must be at least at strictness `ignore`.'
+  Enabled: false
+  VersionAdded: 0.3.3
+
+Sorbet/KeywordArgumentOrdering:
+  Description: >-
+                  Enforces a compatible keyword arguments with Sorbet.
+
+                  All keyword arguments must be at the end of the parameters
+                  list, and all keyword arguments with a default value must be
+                  after those without default values.
+  Enabled: true
+  VersionAdded: 0.2.0
+
+Sorbet/ParametersOrderingInSignature:
+  Description: 'Enforces same parameter order between a method and its signature.'
+  Enabled: true
+  VersionAdded: 0.2.0
+
+Sorbet/SignatureBuildOrder:
+  Description: >-
+                  Enforces the order of parts in a signature.
+
+                  The order is first inheritance related builders,
+                  then params, then return and finally the modifier
+                  such as: `abstract.params(...).returns(...).soft`.'
+  Enabled: true
+  VersionAdded: 0.3.0
+
+Sorbet/StrictSigil:
+  Description: 'All files must be at least at strictness `strict`.'
+  Enabled: false
+  VersionAdded: 0.3.3
+
+Sorbet/StrongSigil:
+  Description: 'All files must be at least at strictness `strong`.'
+  Enabled: false
+  VersionAdded: 0.3.3
+
+Sorbet/TrueSigil:
+  Description: 'All files must be at least at strictness `true`.'
+  Enabled: false
+  VersionAdded: 0.3.3
+
+Sorbet/ValidSigil:
+  Description: 'All files must have a valid sigil.'
+  Enabled: true
+  VersionAdded: 0.3.3
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop-sorbet.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop-sorbet.rb
new file mode 100644
index 0000000000..f3fd8d7c5c
--- /dev/null
+++ b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop-sorbet.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+require 'rubocop'
+
+require_relative 'rubocop/sorbet'
+require_relative 'rubocop/sorbet/version'
+require_relative 'rubocop/sorbet/inject'
+
+RuboCop::Sorbet::Inject.defaults!
+
+require_relative 'rubocop/cop/sorbet_cops'
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/binding_constants_without_type_alias.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/binding_constants_without_type_alias.rb
new file mode 100644
index 0000000000..b7885ff89e
--- /dev/null
+++ b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/binding_constants_without_type_alias.rb
@@ -0,0 +1,121 @@
+# frozen_string_literal: true
+
+require 'rubocop'
+
+module RuboCop
+  module Cop
+    module Sorbet
+      # This cop disallows binding the return value of `T.any`, `T.all`, `T.enum`
+      # to a constant directly. To bind the value, one must use `T.type_alias`.
+      #
+      # @example
+      #
+      #   # bad
+      #   FooOrBar = T.any(Foo, Bar)
+      #
+      #   # good
+      #   FooOrBar = T.type_alias { T.any(Foo, Bar) }
+      class BindingConstantWithoutTypeAlias < RuboCop::Cop::Cop
+        def_node_matcher(:binding_unaliased_type?, <<-PATTERN)
+          (casgn _ _ [#not_nil? #not_t_let? #not_dynamic_type_creation_with_block? #not_generic_parameter_decl? #method_needing_aliasing_on_t?])
+        PATTERN
+
+        def_node_matcher(:using_type_alias?, <<-PATTERN)
+          (block
+            (send
+              (const nil? :T) :type_alias)
+              _
+              _
+          )
+        PATTERN
+
+        def_node_matcher(:using_deprecated_type_alias_syntax?, <<-PATTERN)
+          (
+            send
+            (const nil? :T)
+            :type_alias
+            _
+          )
+        PATTERN
+
+        def_node_matcher(:t_let?, <<-PATTERN)
+          (
+            send
+            (const nil? :T)
+            :let
+            _
+            _
+          )
+        PATTERN
+
+        def_node_matcher(:dynamic_type_creation_with_block?, <<-PATTERN)
+          (block
+            (send
+              const :new ...)
+              _
+              _
+          )
+        PATTERN
+
+        def_node_matcher(:generic_parameter_decl?, <<-PATTERN)
+          (
+            send nil? {:type_template :type_member} ...
+          )
+        PATTERN
+
+        def_node_search(:method_needing_aliasing_on_t?, <<-PATTERN)
+          (
+            send
+            (const nil? :T)
+            {:any :all :noreturn :class_of :untyped :nilable :self_type :enum :proc}
+             ...
+          )
+        PATTERN
+
+        def not_t_let?(node)
+          !t_let?(node)
+        end
+
+        def not_dynamic_type_creation_with_block?(node)
+          !dynamic_type_creation_with_block?(node)
+        end
+
+        def not_generic_parameter_decl?(node)
+          !generic_parameter_decl?(node)
+        end
+
+        def not_nil?(node)
+          !node.nil?
+        end
+
+        def on_casgn(node)
+          return unless binding_unaliased_type?(node) && !using_type_alias?(node.children[2])
+          if using_deprecated_type_alias_syntax?(node.children[2])
+            add_offense(
+              node.children[2],
+              message: "It looks like you're using the old `T.type_alias` syntax. " \
+              '`T.type_alias` now expects a block.' \
+              'Run Sorbet with the options "--autocorrect --error-white-list=5043" ' \
+              'to automatically upgrade to the new syntax.'
+            )
+            return
+          end
+          add_offense(
+            node.children[2],
+            message: "It looks like you're trying to bind a type to a constant. " \
+            'To do this, you must alias the type using `T.type_alias`.'
+          )
+        end
+
+        def autocorrect(node)
+          lambda do |corrector|
+            corrector.replace(
+              node.source_range,
+              "T.type_alias { #{node.source} }"
+            )
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/constants_from_strings.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/constants_from_strings.rb
new file mode 100644
index 0000000000..d235527348
--- /dev/null
+++ b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/constants_from_strings.rb
@@ -0,0 +1,53 @@
+# frozen_string_literal: true
+
+require 'rubocop'
+
+module RuboCop
+  module Cop
+    module Sorbet
+      # This cop disallows the calls that are used to get constants fom Strings
+      # such as +constantize+, +const_get+, and +constants+.
+      #
+      # The goal of this cop is to make the code easier to statically analyze,
+      # more IDE-friendly, and more predictable. It leads to code that clearly
+      # expresses which values the constant can have.
+      #
+      # @example
+      #
+      #   # bad
+      #   class_name.constantize
+      #
+      #   # bad
+      #   constants.detect { |c| c.name == "User" }
+      #
+      #   # bad
+      #   const_get(class_name)
+      #
+      #   # good
+      #   case class_name
+      #   when "User"
+      #     User
+      #   else
+      #     raise ArgumentError
+      #   end
+      #
+      #   # good
+      #   { "User" => User }.fetch(class_name)
+      class ConstantsFromStrings < ::RuboCop::Cop::Cop
+        def_node_matcher(:constant_from_string?, <<-PATTERN)
+          (send _ {:constantize :constants :const_get} ...)
+        PATTERN
+
+        def on_send(node)
+          return unless constant_from_string?(node)
+          add_offense(
+            node,
+            location: :selector,
+            message: "Don't use `#{node.method_name}`, it makes the code harder to understand, less editor-friendly, " \
+              "and impossible to analyze. Replace `#{node.method_name}` with a case/when or a hash."
+          )
+        end
+      end
+    end
+  end
+end
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/forbid_include_const_literal.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/forbid_include_const_literal.rb
new file mode 100644
index 0000000000..30c52390cf
--- /dev/null
+++ b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/forbid_include_const_literal.rb
@@ -0,0 +1,58 @@
+# encoding: utf-8
+# frozen_string_literal: true
+
+require 'rubocop'
+
+# Correct `send` expressions in include statements by constant literals.
+#
+# Sorbet, the static checker, is not (yet) able to support constructs on the
+# following form:
+#
+# ```ruby
+# class MyClass
+#   include send_expr
+# end
+# ```
+#
+# Multiple occurences of this can be found in Shopify's code base like:
+#
+# ```ruby
+# include Rails.application.routes.url_helpers
+# ```
+# or
+# ```ruby
+# include Polaris::Engine.helpers
+# ```
+module RuboCop
+  module Cop
+    module Sorbet
+      class ForbidIncludeConstLiteral < RuboCop::Cop::Cop
+        MSG = 'Includes must only contain constant literals'
+
+        attr_accessor :used_names
+
+        def_node_matcher :not_lit_const_include?, <<-PATTERN
+          (send nil? {:include :extend :prepend}
+            $_
+          )
+        PATTERN
+
+        def initialize(*)
+          super
+          self.used_names = Set.new
+        end
+
+        def on_send(node)
+          return unless not_lit_const_include?(node) do |send_argument|
+            ![:const, :self].include?(send_argument.type)
+          end
+          parent = node.parent
+          return unless parent
+          parent = parent.parent if [:begin, :block].include?(parent.type)
+          return unless [:module, :class, :sclass].include?(parent.type)
+          add_offense(node)
+        end
+      end
+    end
+  end
+end
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/forbid_superclass_const_literal.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/forbid_superclass_const_literal.rb
new file mode 100644
index 0000000000..e87e636a16
--- /dev/null
+++ b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/forbid_superclass_const_literal.rb
@@ -0,0 +1,45 @@
+# encoding: utf-8
+# frozen_string_literal: true
+
+require 'rubocop'
+
+# Correct superclass `send` expressions by constant literals.
+#
+# Sorbet, the static checker, is not (yet) able to support constructs on the
+# following form:
+#
+# ```ruby
+# class Foo < send_expr; end
+# ```
+#
+# Multiple occurences of this can be found in Shopify's code base like:
+#
+# ```ruby
+# class ShopScope < Component::TrustedIdScope[ShopIdentity::ShopId]
+# ```
+# or
+# ```ruby
+# class ApiClientEligibility < Struct.new(:api_client, :match_results, :shop)
+# ```
+module RuboCop
+  module Cop
+    module Sorbet
+      class ForbidSuperclassConstLiteral < RuboCop::Cop::Cop
+        MSG = 'Superclasses must only contain constant literals'
+
+        def_node_matcher :not_lit_const_superclass?, <<-PATTERN
+          (class
+            (const ...)
+            (send ...)
+            ...
+          )
+        PATTERN
+
+        def on_class(node)
+          return unless not_lit_const_superclass?(node)
+          add_offense(node.child_nodes[1])
+        end
+      end
+    end
+  end
+end
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/forbid_untyped_struct_props.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/forbid_untyped_struct_props.rb
new file mode 100644
index 0000000000..49b8887706
--- /dev/null
+++ b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/forbid_untyped_struct_props.rb
@@ -0,0 +1,58 @@
+# encoding: utf-8
+# frozen_string_literal: true
+
+require 'rubocop'
+
+module RuboCop
+  module Cop
+    module Sorbet
+      # This cop disallows use of `T.untyped` or `T.nilable(T.untyped)`
+      # as a prop type for `T::Struct`.
+      #
+      # @example
+      #
+      #   # bad
+      #   class SomeClass
+      #     const :foo, T.untyped
+      #     prop :bar, T.nilable(T.untyped)
+      #   end
+      #
+      #   # good
+      #   class SomeClass
+      #     const :foo, Integer
+      #     prop :bar, T.nilable(String)
+      #   end
+      class ForbidUntypedStructProps < RuboCop::Cop::Cop
+        MSG = 'Struct props cannot be T.untyped'
+
+        def_node_matcher :t_struct, <<~PATTERN
+          (const (const nil? :T) :Struct)
+        PATTERN
+
+        def_node_matcher :t_untyped, <<~PATTERN
+          (send (const nil? :T) :untyped)
+        PATTERN
+
+        def_node_matcher :t_nilable_untyped, <<~PATTERN
+          (send (const nil? :T) :nilable {#t_untyped #t_nilable_untyped})
+        PATTERN
+
+        def_node_matcher :subclass_of_t_struct?, <<~PATTERN
+          (class (const ...) #t_struct ...)
+        PATTERN
+
+        def_node_search :untyped_props, <<~PATTERN
+          (send nil? {:prop :const} _ {#t_untyped #t_nilable_untyped} ...)
+        PATTERN
+
+        def on_class(node)
+          return unless subclass_of_t_struct?(node)
+
+          untyped_props(node).each do |untyped_prop|
+            add_offense(untyped_prop.child_nodes[1])
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/sigils/enforce_sigil_order.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/sigils/enforce_sigil_order.rb
new file mode 100644
index 0000000000..42feb2b610
--- /dev/null
+++ b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/sigils/enforce_sigil_order.rb
@@ -0,0 +1,115 @@
+# frozen_string_literal: true
+
+require 'rubocop'
+
+module RuboCop
+  module Cop
+    module Sorbet
+      # This cop checks that the Sorbet sigil comes as the first magic comment in the file.
+      #
+      # The expected order for magic comments is: typed, (en)?coding, warn_indent then frozen_string_literal.
+      #
+      # For example, the following bad ordering:
+      #
+      # ```ruby
+      # # frozen_string_literal: true
+      # # typed: true
+      # class Foo; end
+      # ```
+      #
+      # Will be corrected as:
+      #
+      # ```ruby
+      # # typed: true
+      # # frozen_string_literal: true
+      # class Foo; end
+      # ```
+      #
+      # Only `typed`, `(en)?coding`, `warn_indent` and `frozen_string_literal` magic comments are considered,
+      # other comments or magic comments are left in the same place.
+      class EnforceSigilOrder < ValidSigil
+        include RangeHelp
+
+        def investigate(processed_source)
+          return if processed_source.tokens.empty?
+
+          tokens = extract_magic_comments(processed_source)
+          return if tokens.empty?
+
+          check_magic_comments_order(tokens)
+        end
+
+        def autocorrect(_node)
+          lambda do |corrector|
+            tokens = extract_magic_comments(processed_source)
+
+            # Get the magic comments tokens in their expected order
+            expected = PREFERRED_ORDER.keys.map do |re|
+              tokens.select { |token| re.match?(token.text) }
+            end.flatten
+
+            tokens.each_with_index do |token, index|
+              corrector.replace(token.pos, expected[index].text)
+            end
+
+            # Remove blank lines between the magic comments
+            lines = tokens.map(&:line).to_set
+            (lines.min...lines.max).each do |line|
+              next if lines.include?(line)
+              next unless processed_source[line - 1].empty?
+              corrector.remove(source_range(processed_source.buffer, line, 0))
+            end
+          end
+        end
+
+        protected
+
+        CODING_REGEX = /#\s+(en)?coding:(?:\s+([\w]+))?/
+        INDENT_REGEX = /#\s+warn_indent:(?:\s+([\w]+))?/
+        FROZEN_REGEX = /#\s+frozen_string_literal:(?:\s+([\w]+))?/
+
+        PREFERRED_ORDER = {
+          CODING_REGEX => 'encoding',
+          SIGIL_REGEX => 'typed',
+          INDENT_REGEX => 'warn_indent',
+          FROZEN_REGEX => 'frozen_string_literal',
+        }.freeze
+
+        MAGIC_REGEX = Regexp.union(*PREFERRED_ORDER.keys)
+
+        # extraction
+
+        # Get all the tokens in `processed_source` that match `MAGIC_REGEX`
+        def extract_magic_comments(processed_source)
+          processed_source.tokens
+            .take_while { |token| token.type == :tCOMMENT }
+            .select { |token| MAGIC_REGEX.match?(token.text) }
+        end
+
+        # checks
+
+        def check_magic_comments_order(tokens)
+          # Get the current magic comments order
+          order = tokens.map do |token|
+            PREFERRED_ORDER.keys.find { |re| re.match?(token.text) }
+          end.compact.uniq
+
+          # Get the expected magic comments order based on the one used in the actual source
+          expected = PREFERRED_ORDER.keys.select do |re|
+            tokens.any? { |token| re.match?(token.text) }
+          end.uniq
+
+          if order != expected
+            tokens.each do |token|
+              add_offense(
+                token,
+                location: token.pos,
+                message: "Magic comments should be in the following order: #{PREFERRED_ORDER.values.join(', ')}."
+              )
+            end
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/sigils/false_sigil.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/sigils/false_sigil.rb
new file mode 100644
index 0000000000..1a3c8f18cb
--- /dev/null
+++ b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/sigils/false_sigil.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+require 'rubocop'
+require_relative 'has_sigil'
+
+module RuboCop
+  module Cop
+    module Sorbet
+      # This cop makes the Sorbet `false` sigil mandatory in all files.
+      class FalseSigil < HasSigil
+        def minimum_strictness
+          'false'
+        end
+      end
+    end
+  end
+end
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/sigils/has_sigil.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/sigils/has_sigil.rb
new file mode 100644
index 0000000000..6fd2d6df34
--- /dev/null
+++ b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/sigils/has_sigil.rb
@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+require 'rubocop'
+require_relative 'valid_sigil'
+
+module RuboCop
+  module Cop
+    module Sorbet
+      # This cop makes the Sorbet typed sigil mandatory in all files.
+      #
+      # Options:
+      #
+      # * `SuggestedStrictness`: Sorbet strictness level suggested in offense messages (default: 'false')
+      # * `MinimumStrictness`: If set, make offense if the strictness level in the file is below this one
+      #
+      # If a `MinimumStrictness` level is specified, it will be used in offense messages and autocorrect.
+      class HasSigil < ValidSigil
+        @registry = Cop.registry # So we can properly subclass this cop
+
+        def require_sigil_on_all_files?
+          true
+        end
+      end
+    end
+  end
+end
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/sigils/ignore_sigil.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/sigils/ignore_sigil.rb
new file mode 100644
index 0000000000..5f7cf9f75e
--- /dev/null
+++ b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/sigils/ignore_sigil.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+require 'rubocop'
+require_relative 'has_sigil'
+
+module RuboCop
+  module Cop
+    module Sorbet
+      # This cop makes the Sorbet `ignore` sigil mandatory in all files.
+      class IgnoreSigil < HasSigil
+        def minimum_strictness
+          'ignore'
+        end
+      end
+    end
+  end
+end
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/sigils/strict_sigil.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/sigils/strict_sigil.rb
new file mode 100644
index 0000000000..efe26d991b
--- /dev/null
+++ b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/sigils/strict_sigil.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+require 'rubocop'
+require_relative 'has_sigil'
+
+module RuboCop
+  module Cop
+    module Sorbet
+      # This cop makes the Sorbet `strict` sigil mandatory in all files.
+      class StrictSigil < HasSigil
+        def minimum_strictness
+          'strict'
+        end
+      end
+    end
+  end
+end
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/sigils/strong_sigil.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/sigils/strong_sigil.rb
new file mode 100644
index 0000000000..0b4cf36b68
--- /dev/null
+++ b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/sigils/strong_sigil.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+require 'rubocop'
+require_relative 'has_sigil'
+
+module RuboCop
+  module Cop
+    module Sorbet
+      # This cop makes the Sorbet `strong` sigil mandatory in all files.
+      class StrongSigil < HasSigil
+        def minimum_strictness
+          'strong'
+        end
+      end
+    end
+  end
+end
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/sigils/true_sigil.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/sigils/true_sigil.rb
new file mode 100644
index 0000000000..60b81b037b
--- /dev/null
+++ b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/sigils/true_sigil.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+require 'rubocop'
+require_relative 'has_sigil'
+
+module RuboCop
+  module Cop
+    module Sorbet
+      # This cop makes the Sorbet `true` sigil mandatory in all files.
+      class TrueSigil < HasSigil
+        def minimum_strictness
+          'true'
+        end
+      end
+    end
+  end
+end
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/sigils/valid_sigil.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/sigils/valid_sigil.rb
new file mode 100644
index 0000000000..fbcc307ba4
--- /dev/null
+++ b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/sigils/valid_sigil.rb
@@ -0,0 +1,160 @@
+# frozen_string_literal: true
+
+require 'rubocop'
+
+module RuboCop
+  module Cop
+    module Sorbet
+      # This cop checks that every Ruby file contains a valid Sorbet sigil.
+      # Adapted from: https://gist.github.com/clarkdave/85aca4e16f33fd52aceb6a0a29936e52
+      #
+      # Options:
+      #
+      # * `RequireSigilOnAllFiles`: make offense if the Sorbet typed is not found in the file (default: false)
+      # * `SuggestedStrictness`: Sorbet strictness level suggested in offense messages (default: 'false')
+      # * `MinimumStrictness`: If set, make offense if the strictness level in the file is below this one
+      #
+      # If a `MinimumStrictness` level is specified, it will be used in offense messages and autocorrect.
+      class ValidSigil < RuboCop::Cop::Cop
+        @registry = Cop.registry # So we can properly subclass this cop
+
+        def investigate(processed_source)
+          return if processed_source.tokens.empty?
+
+          sigil = extract_sigil(processed_source)
+          return unless check_sigil_present(sigil)
+
+          strictness = extract_strictness(sigil)
+          return unless check_strictness_not_empty(sigil, strictness)
+          return unless check_strictness_valid(sigil, strictness)
+          return unless check_strictness_level(sigil, strictness)
+        end
+
+        def autocorrect(_node)
+          lambda do |corrector|
+            return unless require_sigil_on_all_files?
+            return unless extract_sigil(processed_source).nil?
+
+            token = processed_source.tokens.first
+            replace_with = suggested_strictness_level(minimum_strictness, suggested_strictness)
+            sigil = "# typed: #{replace_with}"
+            if token.text.start_with?("#!") # shebang line
+              corrector.insert_after(token.pos, "\n#{sigil}")
+            else
+              corrector.insert_before(token.pos, "#{sigil}\n")
+            end
+          end
+        end
+
+        protected
+
+        STRICTNESS_LEVELS = %w(ignore false true strict strong)
+        SIGIL_REGEX = /#\s+typed:(?:\s+([\w]+))?/
+
+        # extraction
+
+        def extract_sigil(processed_source)
+          processed_source.tokens
+            .take_while { |token| token.type == :tCOMMENT }
+            .find { |token| SIGIL_REGEX.match?(token.text) }
+        end
+
+        def extract_strictness(sigil)
+          sigil.text.match(SIGIL_REGEX)&.captures&.first
+        end
+
+        # checks
+
+        def check_sigil_present(sigil)
+          return true unless sigil.nil?
+
+          token = processed_source.tokens.first
+          if require_sigil_on_all_files?
+            strictness = suggested_strictness_level(minimum_strictness, suggested_strictness)
+            add_offense(
+              token,
+              location: token.pos,
+              message: 'No Sorbet sigil found in file. ' \
+                "Try a `typed: #{strictness}` to start (you can also use `rubocop -a` to automatically add this)."
+            )
+          end
+          false
+        end
+
+        def suggested_strictness_level(minimum_strictness, suggested_strictness)
+          # if no minimum strictness is set (eg. using Sorbet/HasSigil without config) then
+          # we always use the suggested strictness which defaults to `false`
+          return suggested_strictness unless minimum_strictness
+
+          # special case: if you're using Sorbet/IgnoreSigil without config, we should recommend `ignore`
+          return "ignore" if minimum_strictness == "ignore" && cop_config['SuggestedStrictness'].nil?
+
+          # if a minimum strictness is set (eg. you're using Sorbet/FalseSigil)
+          # we want to compare the minimum strictness and suggested strictness. this is because
+          # the suggested strictness might be higher than the minimum (eg. if you want all new files
+          # at a higher strictness level, without having to migrate existing files at lower levels).
+
+          suggested_level = STRICTNESS_LEVELS.index(suggested_strictness)
+          minimum_level = STRICTNESS_LEVELS.index(minimum_strictness)
+
+          suggested_level > minimum_level ? suggested_strictness : minimum_strictness
+        end
+
+        def check_strictness_not_empty(sigil, strictness)
+          return true if strictness
+
+          add_offense(
+            sigil,
+            location: sigil.pos,
+            message: 'Sorbet sigil should not be empty.'
+          )
+          false
+        end
+
+        def check_strictness_valid(sigil, strictness)
+          return true if STRICTNESS_LEVELS.include?(strictness)
+
+          add_offense(
+            sigil,
+            location: sigil.pos,
+            message: "Invalid Sorbet sigil `#{strictness}`."
+          )
+          false
+        end
+
+        def check_strictness_level(sigil, strictness)
+          return true unless minimum_strictness
+
+          minimum_level = STRICTNESS_LEVELS.index(minimum_strictness)
+          current_level = STRICTNESS_LEVELS.index(strictness)
+          if current_level < minimum_level
+            add_offense(
+              sigil,
+              location: sigil.pos,
+              message: "Sorbet sigil should be at least `#{minimum_strictness}` got `#{strictness}`."
+            )
+            return false
+          end
+          true
+        end
+
+        # options
+
+        # Default is `false`
+        def require_sigil_on_all_files?
+          !!cop_config['RequireSigilOnAllFiles']
+        end
+
+        # Default is `'false'`
+        def suggested_strictness
+          STRICTNESS_LEVELS.include?(cop_config['SuggestedStrictness']) ? cop_config['SuggestedStrictness'] : 'false'
+        end
+
+        # Default is `nil`
+        def minimum_strictness
+          cop_config['MinimumStrictness'] if STRICTNESS_LEVELS.include?(cop_config['MinimumStrictness'])
+        end
+      end
+    end
+  end
+end
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/signatures/allow_incompatible_override.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/signatures/allow_incompatible_override.rb
new file mode 100644
index 0000000000..e4fc7eb273
--- /dev/null
+++ b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/signatures/allow_incompatible_override.rb
@@ -0,0 +1,59 @@
+# frozen_string_literal: true
+
+require 'rubocop'
+
+module RuboCop
+  module Cop
+    module Sorbet
+      # This cop disallows using `.override(allow_incompatible: true)`.
+      # Using `allow_incompatible` suggests a violation of the Liskov
+      # Substitution Principle, meaning that a subclass is not a valid
+      # subtype of it's superclass. This Cop prevents these design smells
+      # from occurring.
+      #
+      # @example
+      #
+      #   # bad
+      #   sig.override(allow_incompatible: true)
+      #
+      #   # good
+      #   sig.override
+      class AllowIncompatibleOverride < RuboCop::Cop::Cop
+        def_node_search(:sig?, <<-PATTERN)
+          (
+            send
+            nil?
+            :sig
+             ...
+          )
+        PATTERN
+
+        def not_nil?(node)
+          !node.nil?
+        end
+
+        def_node_search(:allow_incompatible?, <<-PATTERN)
+          (pair (sym :allow_incompatible) (true))
+        PATTERN
+
+        def_node_matcher(:allow_incompatible_override?, <<-PATTERN)
+          (
+            send
+            [#not_nil? #sig?]
+            :override
+            [#not_nil? #allow_incompatible?]
+          )
+        PATTERN
+
+        def on_send(node)
+          return unless allow_incompatible_override?(node)
+          add_offense(
+            node.children[2],
+            message: 'Usage of `allow_incompatible` suggests a violation of the Liskov Substitution Principle. '\
+            'Instead, strive to write interfaces which respect subtyping principles and remove `allow_incompatible`',
+          )
+        end
+      end
+    end
+  end
+end
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/signatures/checked_true_in_signature.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/signatures/checked_true_in_signature.rb
new file mode 100644
index 0000000000..d4e53a67b6
--- /dev/null
+++ b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/signatures/checked_true_in_signature.rb
@@ -0,0 +1,53 @@
+# frozen_string_literal: true
+
+require 'rubocop'
+require_relative 'signature_cop'
+
+module RuboCop
+  module Cop
+    module Sorbet
+      # This cop disallows the usage of `checked(true)`. This usage could cause
+      # confusion; it could lead some people to believe that a method would be checked
+      # even if runtime checks have not been enabled on the class or globally.
+      # Additionally, in the event where checks are enabled, `checked(true)` would
+      # be redundant; only `checked(false)` or `soft` would change the behaviour.
+      #
+      # @example
+      #
+      #   # bad
+      #   sig { void.checked(true) }
+      #
+      #   # good
+      #   sig { void }
+      class CheckedTrueInSignature < SignatureCop
+        include(RuboCop::Cop::RangeHelp)
+
+        def_node_search(:offending_node, <<~PATTERN)
+          (send _ :checked (true))
+        PATTERN
+
+        MESSAGE =
+          'Using `checked(true)` in a method signature definition is not allowed. ' \
+            '`checked(true)` is the default behavior for modules/classes with runtime checks enabled. ' \
+            'To enable typechecking at runtime for this module, regardless of global settings, ' \
+            '`include(WaffleCone::RuntimeChecks)` to this module and set other methods to `checked(false)`.'
+        private_constant(:MESSAGE)
+
+        def on_signature(node)
+          error = offending_node(node).first
+          return unless error
+
+          add_offense(
+            error,
+            location: source_range(
+              processed_source.buffer,
+              error.location.line,
+              (error.location.selector.begin_pos)..(error.location.end.begin_pos),
+            ),
+            message: MESSAGE
+          )
+        end
+      end
+    end
+  end
+end
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/signatures/enforce_signatures.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/signatures/enforce_signatures.rb
new file mode 100644
index 0000000000..92e1f73642
--- /dev/null
+++ b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/signatures/enforce_signatures.rb
@@ -0,0 +1,135 @@
+# frozen_string_literal: true
+
+require 'rubocop'
+require 'stringio'
+require_relative 'signature_cop'
+
+module RuboCop
+  module Cop
+    module Sorbet
+      # This cop checks that every method definition and attribute accessor has a Sorbet signature.
+      #
+      # It also suggest an autocorrect with placeholders so the following code:
+      #
+      # ```
+      # def foo(a, b, c); end
+      # ```
+      #
+      # Will be corrected as:
+      #
+      # ```
+      # sig { params(a: T.untyped, b: T.untyped, c: T.untyped).returns(T.untyped)
+      # def foo(a, b, c); end
+      # ```
+      #
+      # You can configure the placeholders used by changing the following options:
+      #
+      # * `ParameterTypePlaceholder`: placeholders used for parameter types (default: 'T.untyped')
+      # * `ReturnTypePlaceholder`: placeholders used for return types (default: 'T.untyped')
+      class EnforceSignatures < SignatureCop
+        def_node_matcher(:accessor?, <<-PATTERN)
+          (send nil? {:attr_reader :attr_writer :attr_accessor} ...)
+        PATTERN
+
+        def on_def(node)
+          check_node(node)
+        end
+
+        def on_defs(node)
+          check_node(node)
+        end
+
+        def on_send(node)
+          return unless accessor?(node)
+          check_node(node)
+        end
+
+        def autocorrect(node)
+          lambda do |corrector|
+            suggest = SigSuggestion.new(node.loc.column, param_type_placeholder, return_type_placeholder)
+
+            if node.is_a?(RuboCop::AST::DefNode) # def something
+              node.arguments.each do |arg|
+                suggest.params << arg.children.first
+              end
+            elsif accessor?(node) # attr reader, writer, accessor
+              method = node.children[1]
+              symbol = node.children[2]
+              suggest.params << symbol.value if symbol && (method == :attr_writer || method == :attr_accessor)
+              suggest.returns = 'void' if method == :attr_writer
+            end
+
+            corrector.insert_before(node.loc.expression, suggest.to_autocorrect)
+          end
+        end
+
+        private
+
+        def check_node(node)
+          prev = previous_node(node)
+          unless signature?(prev)
+            add_offense(
+              node,
+              message: "Each method is required to have a signature."
+            )
+          end
+        end
+
+        def previous_node(node)
+          parent = node.parent
+          return nil unless parent
+          parent.children[node.sibling_index - 1]
+        end
+
+        def param_type_placeholder
+          cop_config['ParameterTypePlaceholder'] || 'T.untyped'
+        end
+
+        def return_type_placeholder
+          cop_config['ReturnTypePlaceholder'] || 'T.untyped'
+        end
+
+        class SigSuggestion
+          attr_accessor :params, :returns
+
+          def initialize(indent, param_placeholder, return_placeholder)
+            @params = []
+            @returns = nil
+            @indent = indent
+            @param_placeholder = param_placeholder
+            @return_placeholder = return_placeholder
+          end
+
+          def to_autocorrect
+            out = StringIO.new
+            out << 'sig { '
+            out << generate_params
+            out << generate_return
+            out << " }\n"
+            out << ' ' * @indent # preserve indent for the next line
+            out.string
+          end
+
+          private
+
+          def generate_params
+            return if @params.empty?
+            out = StringIO.new
+            out << 'params('
+            out << @params.map do |param|
+              "#{param}: #{@param_placeholder}"
+            end.join(", ")
+            out << ').'
+            out.string
+          end
+
+          def generate_return
+            return "returns(#{@return_placeholder})" if @returns.nil?
+            return @returns if @returns == 'void'
+            "returns(#{@returns})"
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/signatures/keyword_argument_ordering.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/signatures/keyword_argument_ordering.rb
new file mode 100644
index 0000000000..800115304e
--- /dev/null
+++ b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/signatures/keyword_argument_ordering.rb
@@ -0,0 +1,51 @@
+# frozen_string_literal: true
+
+require 'rubocop'
+require_relative 'signature_cop'
+
+module RuboCop
+  module Cop
+    module Sorbet
+      # This cop checks for the ordering of keyword arguments required by
+      # sorbet-runtime. The ordering requires that all keyword arguments
+      # are at the end of the parameters list, and all keyword arguments
+      # with a default value must be after those without default values.
+      #
+      # @example
+      #
+      #   # bad
+      #   sig { params(a: Integer, b: String).void }
+      #   def foo(a: 1, b:); end
+      #
+      #   # good
+      #   sig { params(b: String, a: Integer).void }
+      #   def foo(b:, a: 1); end
+      class KeywordArgumentOrdering < SignatureCop
+        def on_signature(node)
+          method_node = node.parent.children[node.sibling_index + 1]
+          return if method_node.nil?
+          method_parameters = method_node.arguments
+
+          check_order_for_kwoptargs(method_parameters)
+        end
+
+        private
+
+        def check_order_for_kwoptargs(parameters)
+          out_of_kwoptarg = false
+
+          parameters.reverse.each do |param|
+            out_of_kwoptarg = true unless param.type == :kwoptarg || param.type == :blockarg || param.type == :kwrestarg
+
+            next unless param.type == :kwoptarg && out_of_kwoptarg
+
+            add_offense(
+              param,
+              message: 'Optional keyword arguments must be at the end of the parameter list.'
+            )
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/signatures/parameters_ordering_in_signature.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/signatures/parameters_ordering_in_signature.rb
new file mode 100644
index 0000000000..9c442fb005
--- /dev/null
+++ b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/signatures/parameters_ordering_in_signature.rb
@@ -0,0 +1,70 @@
+# frozen_string_literal: true
+
+require 'rubocop'
+require_relative 'signature_cop'
+
+module RuboCop
+  module Cop
+    module Sorbet
+      # This cop checks for inconsistent ordering of parameters between the
+      # signature and the method definition. The sorbet-runtime gem raises
+      # when such inconsistency occurs.
+      #
+      # @example
+      #
+      #   # bad
+      #   sig { params(a: Integer, b: String).void }
+      #   def foo(b:, a:); end
+      #
+      #   # good
+      #   sig { params(a: Integer, b: String).void }
+      #   def foo(a:, b:); end
+      class ParametersOrderingInSignature < SignatureCop
+        def_node_search(:signature_params, <<-PATTERN)
+          (send _ :params ...)
+        PATTERN
+
+        def on_signature(node)
+          sig_params = signature_params(node).first
+
+          sig_params_order = extract_parameters(sig_params)
+          return if sig_params_order.nil?
+          method_node = node.parent.children[node.sibling_index + 1]
+          return if method_node.nil? || method_node.type != :def
+          method_parameters = method_node.arguments
+
+          check_for_inconsistent_param_ordering(sig_params_order, method_parameters)
+        end
+
+        private
+
+        def extract_parameters(sig_params)
+          return [] if sig_params.nil?
+
+          arguments = sig_params.arguments.first
+          return arguments.keys.map(&:value) if RuboCop::AST::HashNode === arguments
+
+          add_offense(
+            sig_params,
+            message: "Invalid signature."
+          )
+        end
+
+        def check_for_inconsistent_param_ordering(sig_params_order, parameters)
+          parameters.each_with_index do |param, index|
+            param_name = param.children[0]
+            sig_param_name = sig_params_order[index]
+
+            next if param_name == sig_param_name
+
+            add_offense(
+              param,
+              message: "Inconsistent ordering of arguments at index #{index}. " \
+              "Expected `#{sig_param_name}` from sig above."
+            )
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/signatures/signature_build_order.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/signatures/signature_build_order.rb
new file mode 100644
index 0000000000..245cf8fbf3
--- /dev/null
+++ b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/signatures/signature_build_order.rb
@@ -0,0 +1,104 @@
+# frozen_string_literal: true
+
+require 'rubocop'
+require_relative 'signature_cop'
+
+begin
+  require 'unparser'
+rescue LoadError
+  nil
+end
+
+module RuboCop
+  module Cop
+    module Sorbet
+      class SignatureBuildOrder < SignatureCop
+        ORDER =
+          [
+            :abstract,
+            :override,
+            :overridable,
+            :type_parameters,
+            :params,
+            :returns,
+            :void,
+            :soft,
+            :checked,
+            :on_failure,
+          ].each_with_index.to_h.freeze
+
+        def_node_search(:root_call, <<~PATTERN)
+          (send nil? {#{ORDER.keys.map(&:inspect).join(' ')}} ...)
+        PATTERN
+
+        def on_signature(node)
+          calls = call_chain(node.children[2]).map(&:method_name)
+          return unless calls.any?
+
+          expected_order = calls.sort_by { |call| ORDER[call] }
+          return if expected_order == calls
+
+          message = "Sig builders must be invoked in the following order: #{expected_order.join(', ')}."
+
+          unless can_autocorrect?
+            message += ' For autocorrection, add the `unparser` gem to your project.'
+          end
+
+          add_offense(
+            node.children[2],
+            message: message,
+          )
+          node
+        end
+
+        def autocorrect(node)
+          return nil unless can_autocorrect?
+
+          lambda do |corrector|
+            tree = call_chain(node_with_index_sends(node))
+              .sort_by { |call| ORDER[call.method_name] }
+              .reduce(nil) do |receiver, caller|
+                caller.updated(nil, [receiver] + caller.children.drop(1))
+              end
+
+            corrector.replace(
+              node.source_range,
+              Unparser.unparse(tree),
+            )
+          end
+        end
+
+        private
+
+        def node_with_index_sends(node)
+          # This is really dirty hack to reparse the current node with index send
+          # emitting enabled, which is necessary to unparse them back as index accessors.
+          emit_index_value = RuboCop::AST::Builder.emit_index
+          RuboCop::AST::Builder.emit_index = true
+          RuboCop::AST::ProcessedSource.new(node.source, target_ruby_version, processed_source.path).ast
+        ensure
+          RuboCop::AST::Builder.emit_index = emit_index_value
+        end
+
+        def can_autocorrect?
+          defined?(::Unparser)
+        end
+
+        def call_chain(sig_child_node)
+          call_node = root_call(sig_child_node).first
+          return [] unless call_node
+
+          calls = []
+          while call_node != sig_child_node
+            calls << call_node
+            call_node = call_node.parent
+          end
+
+          calls << sig_child_node
+
+          calls
+        end
+      end
+    end
+  end
+end
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/signatures/signature_cop.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/signatures/signature_cop.rb
new file mode 100644
index 0000000000..d583799d81
--- /dev/null
+++ b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet/signatures/signature_cop.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+require 'rubocop'
+
+module RuboCop
+  module Cop
+    module Sorbet
+      # Abstract cop specific to Sorbet signatures
+      #
+      # You can subclass it to use the `on_signature` trigger and the `signature?` node matcher.
+      class SignatureCop < RuboCop::Cop::Cop
+        @registry = Cop.registry # So we can properly subclass this cop
+
+        def_node_matcher(:signature?, <<~PATTERN)
+          (block (send nil? :sig) (args) ...)
+        PATTERN
+
+        def on_block(node)
+          on_signature(node) if signature?(node)
+        end
+
+        def on_signature(_)
+          # To be defined in subclasses
+        end
+      end
+    end
+  end
+end
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet_cops.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet_cops.rb
new file mode 100644
index 0000000000..b61037489f
--- /dev/null
+++ b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/cop/sorbet_cops.rb
@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+require_relative 'sorbet/binding_constants_without_type_alias'
+require_relative 'sorbet/constants_from_strings'
+require_relative 'sorbet/forbid_superclass_const_literal'
+require_relative 'sorbet/forbid_include_const_literal'
+require_relative 'sorbet/forbid_untyped_struct_props'
+
+require_relative 'sorbet/signatures/allow_incompatible_override'
+require_relative 'sorbet/signatures/checked_true_in_signature'
+require_relative 'sorbet/signatures/keyword_argument_ordering'
+require_relative 'sorbet/signatures/parameters_ordering_in_signature'
+require_relative 'sorbet/signatures/signature_build_order'
+require_relative 'sorbet/signatures/enforce_signatures'
+
+require_relative 'sorbet/sigils/valid_sigil'
+require_relative 'sorbet/sigils/has_sigil'
+require_relative 'sorbet/sigils/ignore_sigil'
+require_relative 'sorbet/sigils/false_sigil'
+require_relative 'sorbet/sigils/true_sigil'
+require_relative 'sorbet/sigils/strict_sigil'
+require_relative 'sorbet/sigils/strong_sigil'
+require_relative 'sorbet/sigils/enforce_sigil_order'
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/sorbet.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/sorbet.rb
new file mode 100644
index 0000000000..ddfa9e7a51
--- /dev/null
+++ b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/sorbet.rb
@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+require "rubocop/sorbet/version"
+require "yaml"
+
+module RuboCop
+  module Sorbet
+    class Error < StandardError; end
+
+    PROJECT_ROOT   = Pathname.new(__dir__).parent.parent.expand_path.freeze
+    CONFIG_DEFAULT = PROJECT_ROOT.join('config', 'default.yml').freeze
+    CONFIG         = YAML.safe_load(CONFIG_DEFAULT.read).freeze
+
+    private_constant(:CONFIG_DEFAULT, :PROJECT_ROOT)
+  end
+end
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/sorbet/inject.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/sorbet/inject.rb
new file mode 100644
index 0000000000..f0440faac0
--- /dev/null
+++ b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/sorbet/inject.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+# The original code is from https://github.com/rubocop-hq/rubocop-rspec/blob/master/lib/rubocop/rspec/inject.rb
+# See https://github.com/rubocop-hq/rubocop-rspec/blob/master/MIT-LICENSE.md
+module RuboCop
+  module Sorbet
+    # Because RuboCop doesn't yet support plugins, we have to monkey patch in a
+    # bit of our configuration.
+    module Inject
+      def self.defaults!
+        path = CONFIG_DEFAULT.to_s
+        hash = ConfigLoader.send(:load_yaml_configuration, path)
+        config = Config.new(hash, path).tap(&:make_excludes_absolute)
+        puts "configuration from #{path}" if ConfigLoader.debug?
+        config = ConfigLoader.merge_with_default(config, path)
+        ConfigLoader.instance_variable_set(:@default_configuration, config)
+      end
+    end
+  end
+end
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/sorbet/version.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/sorbet/version.rb
new file mode 100644
index 0000000000..ea49b569f3
--- /dev/null
+++ b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/rubocop-sorbet-0.5.1/lib/rubocop/sorbet/version.rb
@@ -0,0 +1,6 @@
+# frozen_string_literal: true
+module RuboCop
+  module Sorbet
+    VERSION = "0.5.1"
+  end
+end
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/sorbet-runtime-stub-0.2.0/lib/sorbet-runtime-stub.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/sorbet-runtime-stub-0.2.0/lib/sorbet-runtime-stub.rb
new file mode 100644
index 0000000000..3d6e9b7a28
--- /dev/null
+++ b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/sorbet-runtime-stub-0.2.0/lib/sorbet-runtime-stub.rb
@@ -0,0 +1,146 @@
+# typed: ignore
+
+begin
+  gem "sorbet-runtime"
+  return
+rescue Gem::LoadError
+end
+
+module T
+  class << self
+    def absurd(value); end
+    def all(type_a, type_b, *types); end
+    def any(type_a, type_b, *types); end
+    def attached_class; end
+    def class_of(klass); end
+    def enum(values); end
+    def nilable(type); end
+    def noreturn; end
+    def self_type; end
+    def type_alias(type=nil, &_blk); end
+    def type_parameter(name); end
+    def untyped; end
+
+    def assert_type!(value, _type, _checked: true)
+      value
+    end
+
+    def cast(value, _type, _checked: true)
+      value
+    end
+
+    def let(value, _type, _checked: true)
+      value
+    end
+
+    def must(arg, _msg = nil)
+      arg
+    end
+
+    def proc
+      T::Proc.new
+    end
+
+    def reveal_type(value)
+      value
+    end
+
+    def unsafe(value)
+      value
+    end
+  end
+
+  module Sig
+    def sig(arg0=nil, &blk); end
+  end
+
+  module Helpers
+    def abstract!;  end
+    def interface!; end
+    def final!; end
+    def sealed!; end
+    def mixes_in_class_methods(mod); end
+  end
+
+  module Generic
+    include T::Helpers
+
+    def type_parameters(*params); end
+    def type_member(variance=:invariant, fixed: nil, lower: nil, upper: BasicObject); end
+    def type_template(variance=:invariant, fixed: nil, lower: nil, upper: BasicObject); end
+
+    def [](*types)
+      self
+    end
+  end
+
+  module Array
+    def self.[](type); end
+  end
+
+  Boolean = Object.new.freeze
+
+  module Configuration
+    def self.call_validation_error_handler(signature, opts); end
+    def self.call_validation_error_handler=(value); end
+    def self.default_checked_level=(default_checked_level); end
+    def self.enable_checking_for_sigs_marked_checked_tests; end
+    def self.enable_final_checks_on_hooks; end
+    def self.enable_legacy_t_enum_migration_mode; end
+    def self.reset_final_checks_on_hooks; end
+    def self.hard_assert_handler(str, extra); end
+    def self.hard_assert_handler=(value); end
+    def self.inline_type_error_handler(error); end
+    def self.inline_type_error_handler=(value); end
+    def self.log_info_handler(str, extra); end
+    def self.log_info_handler=(value); end
+    def self.scalar_types; end
+    def self.scalar_types=(values); end
+    def self.sealed_violation_whitelist; end
+    def self.sealed_violation_whitelist=(sealed_violation_whitelist); end
+    def self.sig_builder_error_handler(error, location); end
+    def self.sig_builder_error_handler=(value); end
+    def self.sig_validation_error_handler(error, opts); end
+    def self.sig_validation_error_handler=(value); end
+    def self.soft_assert_handler(str, extra); end
+    def self.soft_assert_handler=(value); end
+  end
+
+  module Enumerable
+    def self.[](type); end
+  end
+
+  module Enumerator
+    def self.[](type); end
+  end
+
+  module Hash
+    def self.[](keys, values); end
+  end
+
+  class Proc
+    def bind(*_)
+      self
+    end
+
+    def params(*_param)
+      self
+    end
+
+    def void
+      self
+    end
+
+    def returns(_type)
+      self
+    end
+  end
+
+  module Range
+    def self.[](type); end
+  end
+
+  module Set
+    def self.[](type); end
+  end
+end
diff --git a/completions/internal_commands_list.txt b/completions/internal_commands_list.txt
index cf63a940c6..4e7367131a 100644
--- a/completions/internal_commands_list.txt
+++ b/completions/internal_commands_list.txt
@@ -81,6 +81,7 @@ switch
 tap
 tap-info
 tap-new
+tc
 test
 tests
 typecheck
diff --git a/docs/Manpage.md b/docs/Manpage.md
index 7cbce54a99..ad972b3e1e 100644
--- a/docs/Manpage.md
+++ b/docs/Manpage.md
@@ -1770,6 +1770,9 @@ For example, you might add something like the following to your ~/.profile, ~/.b
   * `HOMEBREW_SKIP_OR_LATER_BOTTLES`:
     If set with `HOMEBREW_DEVELOPER`, do not use bottles from older versions of macOS. This is useful in development on new macOS versions.
 
+  * `HOMEBREW_SORBET_RUNTIME`:
+    Enable runtime typechecking using Sorbet.
+
   * `HOMEBREW_SVN`:
     Use this as the `svn`(1) binary.
 
diff --git a/manpages/brew.1 b/manpages/brew.1
index 851358882f..f8d8da4472 100644
--- a/manpages/brew.1
+++ b/manpages/brew.1
@@ -2446,6 +2446,10 @@ If set, use Pry for the \fBbrew irb\fR command\.
 If set with \fBHOMEBREW_DEVELOPER\fR, do not use bottles from older versions of macOS\. This is useful in development on new macOS versions\.
 .
 .TP
+\fBHOMEBREW_SORBET_RUNTIME\fR
+Enable runtime typechecking using Sorbet\.
+.
+.TP
 \fBHOMEBREW_SVN\fR
 Use this as the \fBsvn\fR(1) binary\.
 .