Merge pull request #16463 from dduugg/no-active-support

Remove ActiveSupport from runtime

.gitignore

@@ -53,25 +53,6 @@
 !**/vendor/bundle/ruby/*/gems/*/lib
 !**/vendor/bundle/ruby/*/gems/addressable-*/data
 !**/vendor/bundle/ruby/*/gems/public_suffix-*/data
-!**/vendor/bundle/ruby/*/gems/rubocop-performance-*/config
-!**/vendor/bundle/ruby/*/gems/rubocop-rails-*/config
-!**/vendor/bundle/ruby/*/gems/rubocop-rspec-*/config
-!**/vendor/bundle/ruby/*/gems/rubocop-sorbet-*/config
-
-# Ignore activesupport, except the ones we need.
-**/vendor/bundle/ruby/*/gems/activesupport-*/lib/**/*
-!**/vendor/bundle/ruby/*/gems/activesupport-*/lib/active_support/
-!**/vendor/bundle/ruby/*/gems/activesupport-*/lib/active_support/core_ext/
-!**/vendor/bundle/ruby/*/gems/activesupport-*/lib/active_support/core_ext/*/
-!**/vendor/bundle/ruby/*/gems/activesupport-*/lib/active_support/core_ext/array/access.rb
-!**/vendor/bundle/ruby/*/gems/activesupport-*/lib/active_support/core_ext/enumerable.rb
-!**/vendor/bundle/ruby/*/gems/activesupport-*/lib/active_support/core_ext/file/atomic.rb
-!**/vendor/bundle/ruby/*/gems/activesupport-*/lib/active_support/core_ext/hash/deep_merge.rb
-!**/vendor/bundle/ruby/*/gems/activesupport-*/lib/active_support/core_ext/hash/deep_transform_values.rb
-!**/vendor/bundle/ruby/*/gems/activesupport-*/lib/active_support/core_ext/hash/keys.rb
-!**/vendor/bundle/ruby/*/gems/activesupport-*/lib/active_support/core_ext/object/deep_dup.rb
-!**/vendor/bundle/ruby/*/gems/activesupport-*/lib/active_support/core_ext/object/duplicable.rb
-!**/vendor/bundle/ruby/*/gems/activesupport-*/lib/active_support/core_ext/string/exclude.rb
 
 # Ignore partially included gems where we don't need all files
 **/vendor/gems/mechanize-*/.*
@@ -89,6 +70,7 @@
 **/vendor/gems/mechanize-*/test/
 
 # Ignore dependencies we don't wish to vendor
+**/vendor/bundle/ruby/*/gems/activesupport-*/
 **/vendor/bundle/ruby/*/gems/ast-*/
 **/vendor/bundle/ruby/*/gems/bootsnap-*/
 **/vendor/bundle/ruby/*/gems/bundler-*/

Library/Homebrew/cask/artifact/abstract_artifact.rb

@@ -2,7 +2,7 @@
 # frozen_string_literal: true
 
 require "attrable"
-require "active_support/core_ext/object/deep_dup"
+require "extend/object/deep_dup"
 
 module Cask
   module Artifact

Library/Homebrew/cask/artifact/abstract_uninstall.rb

@@ -6,6 +6,7 @@ require "timeout"
 require "utils/user"
 require "cask/artifact/abstract_artifact"
 require "cask/pkg"
+require "extend/hash/keys"
 
 module Cask
   module Artifact

Library/Homebrew/cask/artifact/installer.rb

@@ -2,6 +2,7 @@
 # frozen_string_literal: true
 
 require "cask/artifact/abstract_artifact"
+require "extend/hash/keys"
 
 module Cask
   module Artifact

Library/Homebrew/cask/artifact/pkg.rb

@@ -5,6 +5,7 @@ require "plist"
 
 require "utils/user"
 require "cask/artifact/abstract_artifact"
+require "extend/hash/keys"
 
 module Cask
   module Artifact

Library/Homebrew/cask/artifact/relocated.rb

@@ -2,6 +2,7 @@
 # frozen_string_literal: true
 
 require "cask/artifact/abstract_artifact"
+require "extend/hash/keys"
 
 module Cask
   module Artifact

Library/Homebrew/cask/cask_loader.rb

@@ -5,6 +5,7 @@ require "cask/cache"
 require "cask/cask"
 require "uri"
 require "utils/curl"
+require "extend/hash/keys"
 
 module Cask
   # Loads a cask from various sources.

Library/Homebrew/cask/config.rb

@@ -5,6 +5,7 @@ require "json"
 
 require "lazy_object"
 require "locale"
+require "extend/hash/keys"
 
 module Cask
   # Configuration for installing casks.

Library/Homebrew/cask/dsl/conflicts_with.rb

@@ -2,6 +2,7 @@
 # frozen_string_literal: true
 
 require "delegate"
+require "extend/hash/keys"
 
 module Cask
   class DSL

Library/Homebrew/cli/parser.rb

@@ -126,9 +126,9 @@ module Homebrew
         # Filter out Sorbet runtime type checking method calls.
         cmd_location = T.must(caller_locations).select do |location|
           T.must(location.path).exclude?("/gems/sorbet-runtime-")
-        end.second
-        @command_name = cmd_location.label.chomp("_args").tr("_", "-")
-        @is_dev_cmd = cmd_location.absolute_path.start_with?(Commands::HOMEBREW_DEV_CMD_PATH)
+        end.fetch(1)
+        @command_name = T.must(cmd_location.label).chomp("_args").tr("_", "-")
+        @is_dev_cmd = T.must(cmd_location.absolute_path).start_with?(Commands::HOMEBREW_DEV_CMD_PATH)
 
         @constraints = []
         @conflicts = []

Library/Homebrew/dev-cmd/bottle.rb

@@ -11,6 +11,7 @@ require "utils/inreplace"
 require "erb"
 require "utils/gzip"
 require "api"
+require "extend/hash/deep_merge"
 
 BOTTLE_ERB = <<-EOS.freeze
   bottle do

Library/Homebrew/dev-cmd/pr-upload.rb

@@ -5,6 +5,7 @@ require "cli/parser"
 require "formula"
 require "github_packages"
 require "github_releases"
+require "extend/hash/deep_merge"
 
 module Homebrew
   module_function

Library/Homebrew/download_strategy.rb

@@ -360,7 +360,7 @@ class AbstractFileDownloadStrategy < AbstractDownloadStrategy
       end
 
       if search_query && (uri_query = uri.query.presence)
-        components[:query] = URI.decode_www_form(uri_query).map(&:second)
+        components[:query] = URI.decode_www_form(uri_query).map { _2 }
       end
     else
       components[:path] = [url]

Library/Homebrew/extend/array.rb

@@ -1,7 +1,27 @@
-# typed: true
+# typed: strict
 # frozen_string_literal: true
 
 class Array
+  # Equal to <tt>self[1]</tt>.
+  #
+  #   %w( a b c d e ).second # => "b"
+  def second = self[1]
+
+  # Equal to <tt>self[2]</tt>.
+  #
+  #   %w( a b c d e ).third # => "c"
+  def third = self[2]
+
+  # Equal to <tt>self[3]</tt>.
+  #
+  #   %w( a b c d e ).fourth # => "d"
+  def fourth = self[3]
+
+  # Equal to <tt>self[4]</tt>.
+  #
+  #   %w( a b c d e ).fifth # => "e"
+  def fifth = self[4]
+
   # Converts the array to a comma-separated sentence where the last element is
   # joined by the connector word.
   #
@@ -48,6 +68,7 @@ class Array
   # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
   # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
   # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+  sig { params(words_connector: String, two_words_connector: String, last_word_connector: String).returns(String) }
   def to_sentence(words_connector: ", ", two_words_connector: " and ", last_word_connector: " and ")
     case length
     when 0

Library/Homebrew/extend/array.rbi

@@ -0,0 +1,15 @@
+# typed: strict
+
+class Array
+  sig { returns(T.nilable(Elem)) }
+  def second; end
+
+  sig { returns(T.nilable(Elem)) }
+  def third; end
+
+  sig { returns(T.nilable(Elem)) }
+  def fourth; end
+
+  sig { returns(T.nilable(Elem)) }
+  def fifth; end
+end

Library/Homebrew/extend/enumerable.rb

@@ -0,0 +1,30 @@
+# typed: strict
+# frozen_string_literal: true
+
+module Enumerable
+  # The negative of the <tt>Enumerable#include?</tt>. Returns +true+ if the
+  # collection does not include the object.
+  sig { params(object: T.untyped).returns(T::Boolean) }
+  def exclude?(object) = !include?(object)
+
+  # Returns a new +Array+ without the blank items.
+  # Uses Object#blank? for determining if an item is blank.
+  #
+  #   [1, "", nil, 2, " ", [], {}, false, true].compact_blank
+  #   # =>  [1, 2, true]
+  #
+  #   Set.new([nil, "", 1, false]).compact_blank
+  #   # => [1]
+  #
+  # When called on a +Hash+, returns a new +Hash+ without the blank values.
+  #
+  #   { a: "", b: 1, c: nil, d: [], e: false, f: true }.compact_blank
+  #   # => { b: 1, f: true }
+  sig { returns(T.self_type) }
+  def compact_blank = T.unsafe(self).reject(&:blank?)
+end
+
+class Hash
+  # Hash#reject has its own definition, so this needs one too.
+  def compact_blank = reject { |_k, v| T.unsafe(v).blank? }
+end

Library/Homebrew/extend/enumerable.rbi

@@ -0,0 +1,6 @@
+# typed: strict
+
+class Hash
+  sig { returns(T::Hash[Hash::K, Hash::V]) }
+  def compact_blank; end
+end

Library/Homebrew/extend/file/atomic.rb

@@ -1,3 +1,4 @@
+# typed: strict
 # frozen_string_literal: true
 
 require "fileutils"
@@ -18,7 +19,14 @@ class File
   #   File.atomic_write('/data/something.important', '/data/tmp') do |file|
   #     file.write('hello')
   #   end
-  def self.atomic_write(file_name, temp_dir = dirname(file_name))
+  sig {
+    type_parameters(:out).params(
+      file_name: T.any(Pathname, String),
+      temp_dir:  String,
+      _block:    T.proc.params(arg0: Tempfile).returns(T.type_parameter(:out)),
+    ).returns(T.type_parameter(:out))
+  }
+  def self.atomic_write(file_name, temp_dir = dirname(file_name), &_block)
     require "tempfile" unless defined?(Tempfile)
 
     Tempfile.open(".#{basename(file_name)}", temp_dir) do |temp_file|
@@ -38,32 +46,35 @@ class File
       if old_stat
         # Set correct permissions on new file
         begin
-          chown(old_stat.uid, old_stat.gid, temp_file.path)
+          chown(old_stat.uid, old_stat.gid, T.must(temp_file.path))
           # This operation will affect filesystem ACL's
-          chmod(old_stat.mode, temp_file.path)
+          chmod(old_stat.mode, T.must(temp_file.path))
         rescue Errno::EPERM, Errno::EACCES
           # Changing file ownership failed, moving on.
         end
       end
 
       # Overwrite original file with temp file
-      rename(temp_file.path, file_name)
+      rename(T.must(temp_file.path), file_name)
       return_val
     end
   end
 
   # Private utility method.
-  def self.probe_stat_in(dir) #:nodoc:
+  sig { params(dir: String).returns(T.nilable(File::Stat)) }
+  private_class_method def self.probe_stat_in(dir) # :nodoc:
     basename = [
       ".permissions_check",
       Thread.current.object_id,
       Process.pid,
-      rand(1000000)
+      rand(1_000_000),
     ].join(".")
 
     file_name = join(dir, basename)
     FileUtils.touch(file_name)
     stat(file_name)
+  rescue Errno::ENOENT
+    file_name = nil
   ensure
     FileUtils.rm_f(file_name) if file_name
   end

Library/Homebrew/extend/hash/deep_merge.rb

@@ -1,3 +1,4 @@
+# typed: strict
 # frozen_string_literal: true
 
 class Hash
@@ -22,10 +23,10 @@ class Hash
   # Same as +deep_merge+, but modifies +self+.
   def deep_merge!(other_hash, &block)
     merge!(other_hash) do |key, this_val, other_val|
-      if this_val.is_a?(Hash) && other_val.is_a?(Hash)
-        this_val.deep_merge(other_val, &block)
-      elsif block_given?
-        block.call(key, this_val, other_val)
+      if T.unsafe(this_val).is_a?(Hash) && other_val.is_a?(Hash)
+        T.unsafe(this_val).deep_merge(other_val, &block)
+      elsif block
+        yield(key, this_val, other_val)
       else
         other_val
       end

Library/Homebrew/extend/hash/deep_merge.rbi

@@ -0,0 +1,20 @@
+# typed: strict
+# frozen_string_literal: true
+
+class Hash
+  sig do
+    type_parameters(:k2).params(
+      other_hash: T::Hash[T.type_parameter(:k2), T.untyped],
+      block: T.nilable(T.proc.params(k: T.untyped, v1: T.untyped, v2: T.untyped).returns(T.untyped))
+    ).returns(T::Hash[T.any(Hash::K, T.type_parameter(:k2)), T.untyped])
+  end
+  def deep_merge(other_hash, &block); end
+
+  sig do
+    type_parameters(:k2).params(
+      other_hash: T::Hash[T.type_parameter(:k2), T.untyped],
+      block: T.nilable(T.proc.params(k: T.untyped, v1: T.untyped, v2: T.untyped).returns(T.untyped))
+    ).returns(T::Hash[T.any(Hash::K, T.type_parameter(:k2)), T.untyped])
+  end
+  def deep_merge!(other_hash, &block); end
+end

Library/Homebrew/extend/hash/deep_transform_values.rb

@@ -0,0 +1,46 @@
+# typed: strict
+# frozen_string_literal: true
+
+class Hash
+  # Returns a new hash with all values converted by the block operation.
+  # This includes the values from the root hash and from all
+  # nested hashes and arrays.
+  #
+  #  hash = { person: { name: 'Rob', age: '28' } }
+  #
+  #  hash.deep_transform_values{ |value| value.to_s.upcase }
+  #  # => {person: {name: "ROB", age: "28"}}
+  def deep_transform_values(&block) = _deep_transform_values_in_object(self, &block)
+
+  # Destructively converts all values by using the block operation.
+  # This includes the values from the root hash and from all
+  # nested hashes and arrays.
+  def deep_transform_values!(&block) = _deep_transform_values_in_object!(self, &block)
+
+  private
+
+  # Support methods for deep transforming nested hashes and arrays.
+  sig { params(object: T.anything, block: T.proc.params(v: T.untyped).returns(T.untyped)).returns(T.untyped) }
+  def _deep_transform_values_in_object(object, &block)
+    case object
+    when Hash
+      object.transform_values { |value| _deep_transform_values_in_object(value, &block) }
+    when Array
+      object.map { |e| _deep_transform_values_in_object(e, &block) }
+    else
+      yield(object)
+    end
+  end
+
+  sig { params(object: T.anything, block: T.proc.params(v: T.untyped).returns(T.untyped)).returns(T.untyped) }
+  def _deep_transform_values_in_object!(object, &block)
+    case object
+    when Hash
+      object.transform_values! { |value| _deep_transform_values_in_object!(value, &block) }
+    when Array
+      object.map! { |e| _deep_transform_values_in_object!(e, &block) }
+    else
+      yield(object)
+    end
+  end
+end

Library/Homebrew/extend/hash/deep_transform_values.rbi

@@ -0,0 +1,17 @@
+# typed: strict
+
+class Hash
+  sig {
+    type_parameters(:out).params(
+      block: T.proc.params(o: Hash::V).returns(T.type_parameter(:out))
+    ).returns(T::Hash[Hash::K, T.type_parameter(:out)])
+  }
+  def deep_transform_values(&block); end
+
+  sig {
+    type_parameters(:out).params(
+      block: T.proc.params(o: Hash::V).returns(T.type_parameter(:out))
+    ).returns(T::Hash[Hash::K, T.type_parameter(:out)])
+  }
+  def deep_transform_values!(&block); end
+end

Library/Homebrew/extend/hash/keys.rb

@@ -0,0 +1,117 @@
+# typed: strict
+# frozen_string_literal: true
+
+class Hash
+  # Validates all keys in a hash match <tt>*valid_keys</tt>, raising
+  # +ArgumentError+ on a mismatch.
+  #
+  # Note that keys are treated differently than HashWithIndifferentAccess,
+  # meaning that string and symbol keys will not match.
+  #
+  #   { name: 'Rob', years: '28' }.assert_valid_keys(:name, :age)
+  #   # => raises "ArgumentError: Unknown key: :years. Valid keys are: :name, :age"
+  #   { name: 'Rob', age: '28' }.assert_valid_keys('name', 'age')
+  #   # => raises "ArgumentError: Unknown key: :name. Valid keys are: 'name', 'age'"
+  #   { name: 'Rob', age: '28' }.assert_valid_keys(:name, :age)   # => passes, raises nothing
+  sig { params(valid_keys: T.untyped).void }
+  def assert_valid_keys(*valid_keys)
+    valid_keys.flatten!
+    each_key do |k|
+      next if valid_keys.include?(k)
+
+      raise ArgumentError,
+            "Unknown key: #{T.unsafe(k).inspect}. Valid keys are: #{valid_keys.map(&:inspect).join(", ")}"
+    end
+  end
+
+  # Returns a new hash with all keys converted by the block operation.
+  # This includes the keys from the root hash and from all
+  # nested hashes and arrays.
+  #
+  #  hash = { person: { name: 'Rob', age: '28' } }
+  #
+  #  hash.deep_transform_keys{ |key| key.to_s.upcase }
+  #  # => {"PERSON"=>{"NAME"=>"Rob", "AGE"=>"28"}}
+  def deep_transform_keys(&block) = _deep_transform_keys_in_object(self, &block)
+
+  # Destructively converts all keys by using the block operation.
+  # This includes the keys from the root hash and from all
+  # nested hashes and arrays.
+  def deep_transform_keys!(&block) = _deep_transform_keys_in_object!(self, &block)
+
+  # Returns a new hash with all keys converted to strings.
+  # This includes the keys from the root hash and from all
+  # nested hashes and arrays.
+  #
+  #   hash = { person: { name: 'Rob', age: '28' } }
+  #
+  #   hash.deep_stringify_keys
+  #   # => {"person"=>{"name"=>"Rob", "age"=>"28"}}
+  def deep_stringify_keys = T.unsafe(self).deep_transform_keys(&:to_s)
+
+  # Destructively converts all keys to strings.
+  # This includes the keys from the root hash and from all
+  # nested hashes and arrays.
+  def deep_stringify_keys! = T.unsafe(self).deep_transform_keys!(&:to_s)
+
+  # Returns a new hash with all keys converted to symbols, as long as
+  # they respond to +to_sym+. This includes the keys from the root hash
+  # and from all nested hashes and arrays.
+  #
+  #   hash = { 'person' => { 'name' => 'Rob', 'age' => '28' } }
+  #
+  #   hash.deep_symbolize_keys
+  #   # => {:person=>{:name=>"Rob", :age=>"28"}}
+  def deep_symbolize_keys
+    deep_transform_keys do |key|
+      T.unsafe(key).to_sym
+    rescue
+      key
+    end
+  end
+
+  # Destructively converts all keys to symbols, as long as they respond
+  # to +to_sym+. This includes the keys from the root hash and from all
+  # nested hashes and arrays.
+  def deep_symbolize_keys!
+    deep_transform_keys! do |key|
+      T.unsafe(key).to_sym
+    rescue
+      key
+    end
+  end
+
+  private
+
+  # Support methods for deep transforming nested hashes and arrays.
+  sig { params(object: T.anything, block: T.proc.params(k: T.untyped).returns(T.untyped)).returns(T.untyped) }
+  def _deep_transform_keys_in_object(object, &block)
+    case object
+    when Hash
+      object.each_with_object({}) do |(key, value), result|
+        result[yield(key)] = _deep_transform_keys_in_object(value, &block)
+      end
+    when Array
+      object.map { |e| _deep_transform_keys_in_object(e, &block) }
+    else
+      object
+    end
+  end
+
+  sig { params(object: T.anything, block: T.proc.params(k: T.untyped).returns(T.untyped)).returns(T.untyped) }
+  def _deep_transform_keys_in_object!(object, &block)
+    case object
+    when Hash
+      # We can't use `each_key` here because we're updating the hash in-place
+      object.keys.each do |key| # rubocop:disable Style/HashEachMethods
+        value = object.delete(key)
+        object[yield(key)] = _deep_transform_keys_in_object!(value, &block)
+      end
+      object
+    when Array
+      object.map! { |e| _deep_transform_keys_in_object!(e, &block) }
+    else
+      object
+    end
+  end
+end

Library/Homebrew/extend/hash/keys.rbi

@@ -0,0 +1,30 @@
+# typed: strict
+# frozen_string_literal: true
+
+class Hash
+  sig {
+    type_parameters(:out).params(
+      block: T.proc.params(o: K).returns(T.type_parameter(:out))
+    ).returns(T::Hash[T.type_parameter(:out), V])
+  }
+  def deep_transform_keys(&block); end
+
+  sig {
+    type_parameters(:out).params(
+      block: T.proc.params(o: K).returns(T.type_parameter(:out))
+    ).returns(T::Hash[T.type_parameter(:out), V])
+  }
+  def deep_transform_keys!(&block); end
+
+  sig { returns(T::Hash[String, V]) }
+  def deep_stringify_keys; end
+
+  sig { returns(T::Hash[String, V]) }
+  def deep_stringify_keys!; end
+
+  sig { returns(T::Hash[Symbol, V]) }
+  def deep_symbolize_keys; end
+
+  sig { returns(T::Hash[Symbol, V]) }
+  def deep_symbolize_keys!; end
+end

Library/Homebrew/extend/object/deep_dup.rb

@@ -1,6 +1,7 @@
+# typed: strict
 # frozen_string_literal: true
 
-require "active_support/core_ext/object/duplicable"
+require "extend/object/duplicable"
 
 class Object
   # Returns a deep copy of object if it's duplicable. If it's
@@ -12,6 +13,7 @@ class Object
   #
   #   object.instance_variable_defined?(:@a) # => false
   #   dup.instance_variable_defined?(:@a)    # => true
+  sig { returns(T.self_type) }
   def deep_dup
     duplicable? ? dup : self
   end
@@ -26,8 +28,9 @@ class Array
   #
   #   array[1][2] # => nil
   #   dup[1][2]   # => 4
+  sig { returns(T.self_type) }
   def deep_dup
-    map(&:deep_dup)
+    T.unsafe(self).map(&:deep_dup)
   end
 end
 
@@ -40,16 +43,35 @@ class Hash
   #
   #   hash[:a][:c] # => nil
   #   dup[:a][:c]  # => "c"
+  sig { returns(T.self_type) }
   def deep_dup
     hash = dup
     each_pair do |key, value|
-      if (::String === key && key.frozen?) || ::Symbol === key
-        hash[key] = value.deep_dup
+      case key
+      when ::String, ::Symbol
+        hash[key] = T.unsafe(value).deep_dup
       else
         hash.delete(key)
-        hash[key.deep_dup] = value.deep_dup
+        hash[T.unsafe(key).deep_dup] = T.unsafe(value).deep_dup
       end
     end
     hash
   end
 end
+
+class Module
+  # Returns a copy of module or class if it's anonymous. If it's
+  # named, returns +self+.
+  #
+  #   Object.deep_dup == Object # => true
+  #   klass = Class.new
+  #   klass.deep_dup == klass # => false
+  sig { returns(T.self_type) }
+  def deep_dup
+    if name.nil?
+      super
+    else
+      self
+    end
+  end
+end

Library/Homebrew/extend/object/duplicable.rb

@@ -1,3 +1,4 @@
+# typed: strict
 # frozen_string_literal: true
 
 #--
@@ -23,27 +24,34 @@ class Object
   #
   # False for method objects;
   # true otherwise.
-  def duplicable?
-    true
-  end
+  sig { returns(T::Boolean) }
+  def duplicable? = true
 end
 
 class Method
   # Methods are not duplicable:
   #
-  #  method(:puts).duplicable? # => false
-  #  method(:puts).dup         # => TypeError: allocator undefined for Method
-  def duplicable?
-    false
-  end
+  #   method(:puts).duplicable? # => false
+  #   method(:puts).dup         # => TypeError: allocator undefined for Method
+  sig { returns(FalseClass) }
+  def duplicable? = false
 end
 
 class UnboundMethod
   # Unbound methods are not duplicable:
   #
-  #  method(:puts).unbind.duplicable? # => false
-  #  method(:puts).unbind.dup         # => TypeError: allocator undefined for UnboundMethod
-  def duplicable?
-    false
-  end
+  #   method(:puts).unbind.duplicable? # => false
+  #   method(:puts).unbind.dup         # => TypeError: allocator undefined for UnboundMethod
+  sig { returns(FalseClass) }
+  def duplicable? = false
+end
+
+require "singleton"
+
+module Singleton
+  # Singleton instances are not duplicable:
+  #
+  #   Class.new.include(Singleton).instance.dup # TypeError (can't dup instance of singleton
+  sig { returns(FalseClass) }
+  def duplicable? = false
 end

Library/Homebrew/extend/pathname.rb

@@ -4,6 +4,7 @@
 require "context"
 require "resource"
 require "metafiles"
+require "extend/file/atomic"
 
 module DiskUsageExtension
   sig { returns(Integer) }

Library/Homebrew/extend/string.rb

@@ -1,3 +1,4 @@
+# typed: strict
 # frozen_string_literal: true
 
 class String
@@ -7,7 +8,6 @@ class String
   #   "hello".exclude? "lo" # => false
   #   "hello".exclude? "ol" # => true
   #   "hello".exclude? ?h   # => false
-  def exclude?(string)
-    !include?(string)
-  end
+  sig { params(string: String).returns(T::Boolean) }
+  def exclude?(string) = !include?(string)
 end

Library/Homebrew/formula_installer.rb

@@ -566,7 +566,7 @@ on_request: installed_on_request?, options: options)
     unsatisfied_reqs = Hash.new { |h, k| h[k] = [] }
     formulae = [formula]
     formula_deps_map = formula.recursive_dependencies
-                              .index_by(&:name)
+                              .each_with_object({}) { |dep, h| h[dep.name] = dep }
 
     while (f = formulae.pop)
       runtime_requirements = runtime_requirements(f)
@@ -1208,7 +1208,7 @@ on_request: installed_on_request?, options: options)
       formula.fetch_bottle_tab
       @bottle_tab_runtime_dependencies = formula.bottle_tab_attributes
                                                 .fetch("runtime_dependencies", [])
-                                                .index_by { |dep| dep["full_name"] }
+                                                .each_with_object({}) { |dep, h| h[dep["full_name"]] = dep }
                                                 .freeze
       true
     rescue DownloadError, ArgumentError

Library/Homebrew/formulary.rb

@@ -8,8 +8,8 @@ require "utils/bottles"
 require "service"
 require "utils/curl"
 require "deprecate_disable"
-
-require "active_support/core_ext/hash/deep_transform_values"
+require "extend/hash/deep_transform_values"
+require "extend/hash/keys"
 
 # The {Formulary} is responsible for creating instances of {Formula}.
 # It is not meant to be used directly from formulae.

Library/Homebrew/github_packages.rb

@@ -4,6 +4,7 @@
 require "utils/curl"
 require "json"
 require "zlib"
+require "extend/hash/keys"
 
 # GitHub Packages client.
 #

Library/Homebrew/global.rb

@@ -10,14 +10,10 @@ require "json/add/exception"
 require "forwardable"
 require "set"
 
-# Only require "core_ext" here to ensure we're only requiring the minimum of
-# what we need.
-require "active_support/core_ext/array/access"
-require "active_support/core_ext/enumerable"
-require "active_support/core_ext/file/atomic"
-require "active_support/core_ext/hash/deep_merge"
-require "active_support/core_ext/hash/keys"
-require "active_support/core_ext/string/exclude"
+require "extend/array"
+require "extend/blank"
+require "extend/enumerable"
+require "extend/string"
 
 HOMEBREW_API_DEFAULT_DOMAIN = ENV.fetch("HOMEBREW_API_DEFAULT_DOMAIN").freeze
 HOMEBREW_BOTTLE_DEFAULT_DOMAIN = ENV.fetch("HOMEBREW_BOTTLE_DEFAULT_DOMAIN").freeze
@@ -70,8 +66,6 @@ HOMEBREW_PULL_OR_COMMIT_URL_REGEX =
   %r[https://github\.com/([\w-]+)/([\w-]+)?/(?:pull/(\d+)|commit/[0-9a-fA-F]{4,40})]
 HOMEBREW_BOTTLES_EXTNAME_REGEX = /\.([a-z0-9_]+)\.bottle\.(?:(\d+)\.)?tar\.gz$/
 
-require "extend/module"
-require "extend/blank"
 require "env_config"
 require "macos_version"
 require "os"
@@ -130,7 +124,6 @@ module Homebrew
 end
 
 require "context"
-require "extend/array"
 require "git_repository"
 require "extend/pathname"
 require "cli/args"

Library/Homebrew/livecheck/strategy/gnu.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: strict
 # frozen_string_literal: true
 
 module Homebrew
@@ -32,11 +32,11 @@ module Homebrew
         NICE_NAME = "GNU"
 
         # The `Regexp` used to determine if the strategy applies to the URL.
-        URL_MATCH_REGEX = %r{
+        URL_MATCH_REGEX = T.let(%r{
           ^https?://
           (?:(?:[^/]+?\.)*gnu\.org/(?:gnu|software)/(?<project_name>[^/]+)/
           |(?<project_name>[^/]+)\.gnu\.org/?$)
-        }ix
+        }ix, Regexp)
 
         # Whether the strategy can be applied to the provided URL.
         #

Library/Homebrew/rubocops.rb

@@ -2,6 +2,5 @@
 # frozen_string_literal: true
 
 require_relative "standalone"
-require_relative "extend/module"
 
 require "rubocops/all"

Library/Homebrew/rubocops/shell_commands.rb

@@ -1,7 +1,7 @@
 # typed: true
 # frozen_string_literal: true
 
-require "active_support/core_ext/array/access"
+require "extend/array"
 require "rubocops/shared/helper_functions"
 require "shellwords"
 

Library/Homebrew/standalone/sorbet.rb

@@ -2,6 +2,7 @@
 # frozen_string_literal: true
 
 require "sorbet-runtime"
+require "extend/module"
 
 # Disable runtime checking unless enabled.
 # In the future we should consider not doing this monkey patch,

Library/Homebrew/tab.rb

@@ -92,7 +92,7 @@ class Tab
     end
 
     if attributes["source"]["spec"].nil?
-      version = PkgVersion.parse path.to_s.split("/").second_to_last
+      version = PkgVersion.parse(File.basename(File.dirname(path)))
       attributes["source"]["spec"] = if version.head?
         "head"
       else

Library/Homebrew/utils/gems.rb

@@ -12,9 +12,9 @@ module Homebrew
   # After updating this, run `brew vendor-gems --update=--bundler`.
   HOMEBREW_BUNDLER_VERSION = "2.4.18"
 
-  # Bump this whenever a committed vendored gem is later added to gitignore.
+  # Bump this whenever a committed vendored gem is later added to or exclusion removed from gitignore.
   # This will trigger it to reinstall properly if `brew install-bundler-gems` needs it.
-  VENDOR_VERSION = 4
+  VENDOR_VERSION = 5
   private_constant :VENDOR_VERSION
 
   RUBY_BUNDLE_VENDOR_DIRECTORY = (HOMEBREW_LIBRARY_PATH/"vendor/bundle/ruby").freeze

Library/Homebrew/vendor/bundle/ruby/3.1.0/gems/activesupport-6.1.7.6/MIT-LICENSE

@@ -1,20 +0,0 @@
-Copyright (c) 2005-2022 David Heinemeier Hansson
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Library/Homebrew/vendor/bundle/ruby/3.1.0/gems/activesupport-6.1.7.6/lib/active_support/core_ext/array/access.rb

@@ -1,104 +0,0 @@
-# frozen_string_literal: true
-
-class Array
-  # Returns the tail of the array from +position+.
-  #
-  #   %w( a b c d ).from(0)  # => ["a", "b", "c", "d"]
-  #   %w( a b c d ).from(2)  # => ["c", "d"]
-  #   %w( a b c d ).from(10) # => []
-  #   %w().from(0)           # => []
-  #   %w( a b c d ).from(-2) # => ["c", "d"]
-  #   %w( a b c ).from(-10)  # => []
-  def from(position)
-    self[position, length] || []
-  end
-
-  # Returns the beginning of the array up to +position+.
-  #
-  #   %w( a b c d ).to(0)  # => ["a"]
-  #   %w( a b c d ).to(2)  # => ["a", "b", "c"]
-  #   %w( a b c d ).to(10) # => ["a", "b", "c", "d"]
-  #   %w().to(0)           # => []
-  #   %w( a b c d ).to(-2) # => ["a", "b", "c"]
-  #   %w( a b c ).to(-10)  # => []
-  def to(position)
-    if position >= 0
-      take position + 1
-    else
-      self[0..position]
-    end
-  end
-
-  # Returns a new array that includes the passed elements.
-  #
-  #   [ 1, 2, 3 ].including(4, 5) # => [ 1, 2, 3, 4, 5 ]
-  #   [ [ 0, 1 ] ].including([ [ 1, 0 ] ]) # => [ [ 0, 1 ], [ 1, 0 ] ]
-  def including(*elements)
-    self + elements.flatten(1)
-  end
-
-  # Returns a copy of the Array excluding the specified elements.
-  #
-  #   ["David", "Rafael", "Aaron", "Todd"].excluding("Aaron", "Todd") # => ["David", "Rafael"]
-  #   [ [ 0, 1 ], [ 1, 0 ] ].excluding([ [ 1, 0 ] ]) # => [ [ 0, 1 ] ]
-  #
-  # Note: This is an optimization of <tt>Enumerable#excluding</tt> that uses <tt>Array#-</tt>
-  # instead of <tt>Array#reject</tt> for performance reasons.
-  def excluding(*elements)
-    self - elements.flatten(1)
-  end
-
-  # Alias for #excluding.
-  def without(*elements)
-    excluding(*elements)
-  end
-
-  # Equal to <tt>self[1]</tt>.
-  #
-  #   %w( a b c d e ).second # => "b"
-  def second
-    self[1]
-  end
-
-  # Equal to <tt>self[2]</tt>.
-  #
-  #   %w( a b c d e ).third # => "c"
-  def third
-    self[2]
-  end
-
-  # Equal to <tt>self[3]</tt>.
-  #
-  #   %w( a b c d e ).fourth # => "d"
-  def fourth
-    self[3]
-  end
-
-  # Equal to <tt>self[4]</tt>.
-  #
-  #   %w( a b c d e ).fifth # => "e"
-  def fifth
-    self[4]
-  end
-
-  # Equal to <tt>self[41]</tt>. Also known as accessing "the reddit".
-  #
-  #   (1..42).to_a.forty_two # => 42
-  def forty_two
-    self[41]
-  end
-
-  # Equal to <tt>self[-3]</tt>.
-  #
-  #   %w( a b c d e ).third_to_last # => "c"
-  def third_to_last
-    self[-3]
-  end
-
-  # Equal to <tt>self[-2]</tt>.
-  #
-  #   %w( a b c d e ).second_to_last # => "d"
-  def second_to_last
-    self[-2]
-  end
-end

Library/Homebrew/vendor/bundle/ruby/3.1.0/gems/activesupport-6.1.7.6/lib/active_support/core_ext/enumerable.rb

@@ -1,260 +0,0 @@
-# frozen_string_literal: true
-
-module Enumerable
-  INDEX_WITH_DEFAULT = Object.new
-  private_constant :INDEX_WITH_DEFAULT
-
-  # Enumerable#sum was added in Ruby 2.4, but it only works with Numeric elements
-  # when we omit an identity.
-
-  # :stopdoc:
-
-  # We can't use Refinements here because Refinements with Module which will be prepended
-  # doesn't work well https://bugs.ruby-lang.org/issues/13446
-  alias :_original_sum_with_required_identity :sum
-  private :_original_sum_with_required_identity
-
-  # :startdoc:
-
-  # Calculates a sum from the elements.
-  #
-  #  payments.sum { |p| p.price * p.tax_rate }
-  #  payments.sum(&:price)
-  #
-  # The latter is a shortcut for:
-  #
-  #  payments.inject(0) { |sum, p| sum + p.price }
-  #
-  # It can also calculate the sum without the use of a block.
-  #
-  #  [5, 15, 10].sum # => 30
-  #  ['foo', 'bar'].sum # => "foobar"
-  #  [[1, 2], [3, 1, 5]].sum # => [1, 2, 3, 1, 5]
-  #
-  # The default sum of an empty list is zero. You can override this default:
-  #
-  #  [].sum(Payment.new(0)) { |i| i.amount } # => Payment.new(0)
-  def sum(identity = nil, &block)
-    if identity
-      _original_sum_with_required_identity(identity, &block)
-    elsif block_given?
-      map(&block).sum(identity)
-    else
-      inject(:+) || 0
-    end
-  end
-
-  # Convert an enumerable to a hash, using the block result as the key and the
-  # element as the value.
-  #
-  #   people.index_by(&:login)
-  #   # => { "nextangle" => <Person ...>, "chade-" => <Person ...>, ...}
-  #
-  #   people.index_by { |person| "#{person.first_name} #{person.last_name}" }
-  #   # => { "Chade- Fowlersburg-e" => <Person ...>, "David Heinemeier Hansson" => <Person ...>, ...}
-  def index_by
-    if block_given?
-      result = {}
-      each { |elem| result[yield(elem)] = elem }
-      result
-    else
-      to_enum(:index_by) { size if respond_to?(:size) }
-    end
-  end
-
-  # Convert an enumerable to a hash, using the element as the key and the block
-  # result as the value.
-  #
-  #   post = Post.new(title: "hey there", body: "what's up?")
-  #
-  #   %i( title body ).index_with { |attr_name| post.public_send(attr_name) }
-  #   # => { title: "hey there", body: "what's up?" }
-  #
-  # If an argument is passed instead of a block, it will be used as the value
-  # for all elements:
-  #
-  #   %i( created_at updated_at ).index_with(Time.now)
-  #   # => { created_at: 2020-03-09 22:31:47, updated_at: 2020-03-09 22:31:47 }
-  def index_with(default = INDEX_WITH_DEFAULT)
-    if block_given?
-      result = {}
-      each { |elem| result[elem] = yield(elem) }
-      result
-    elsif default != INDEX_WITH_DEFAULT
-      result = {}
-      each { |elem| result[elem] = default }
-      result
-    else
-      to_enum(:index_with) { size if respond_to?(:size) }
-    end
-  end
-
-  # Returns +true+ if the enumerable has more than 1 element. Functionally
-  # equivalent to <tt>enum.to_a.size > 1</tt>. Can be called with a block too,
-  # much like any?, so <tt>people.many? { |p| p.age > 26 }</tt> returns +true+
-  # if more than one person is over 26.
-  def many?
-    cnt = 0
-    if block_given?
-      any? do |element|
-        cnt += 1 if yield element
-        cnt > 1
-      end
-    else
-      any? { (cnt += 1) > 1 }
-    end
-  end
-
-  # Returns a new array that includes the passed elements.
-  #
-  #   [ 1, 2, 3 ].including(4, 5)
-  #   # => [ 1, 2, 3, 4, 5 ]
-  #
-  #   ["David", "Rafael"].including %w[ Aaron Todd ]
-  #   # => ["David", "Rafael", "Aaron", "Todd"]
-  def including(*elements)
-    to_a.including(*elements)
-  end
-
-  # The negative of the <tt>Enumerable#include?</tt>. Returns +true+ if the
-  # collection does not include the object.
-  def exclude?(object)
-    !include?(object)
-  end
-
-  # Returns a copy of the enumerable excluding the specified elements.
-  #
-  #   ["David", "Rafael", "Aaron", "Todd"].excluding "Aaron", "Todd"
-  #   # => ["David", "Rafael"]
-  #
-  #   ["David", "Rafael", "Aaron", "Todd"].excluding %w[ Aaron Todd ]
-  #   # => ["David", "Rafael"]
-  #
-  #   {foo: 1, bar: 2, baz: 3}.excluding :bar
-  #   # => {foo: 1, baz: 3}
-  def excluding(*elements)
-    elements.flatten!(1)
-    reject { |element| elements.include?(element) }
-  end
-
-  # Alias for #excluding.
-  def without(*elements)
-    excluding(*elements)
-  end
-
-  # Extract the given key from each element in the enumerable.
-  #
-  #   [{ name: "David" }, { name: "Rafael" }, { name: "Aaron" }].pluck(:name)
-  #   # => ["David", "Rafael", "Aaron"]
-  #
-  #   [{ id: 1, name: "David" }, { id: 2, name: "Rafael" }].pluck(:id, :name)
-  #   # => [[1, "David"], [2, "Rafael"]]
-  def pluck(*keys)
-    if keys.many?
-      map { |element| keys.map { |key| element[key] } }
-    else
-      key = keys.first
-      map { |element| element[key] }
-    end
-  end
-
-  # Extract the given key from the first element in the enumerable.
-  #
-  #   [{ name: "David" }, { name: "Rafael" }, { name: "Aaron" }].pick(:name)
-  #   # => "David"
-  #
-  #   [{ id: 1, name: "David" }, { id: 2, name: "Rafael" }].pick(:id, :name)
-  #   # => [1, "David"]
-  def pick(*keys)
-    return if none?
-
-    if keys.many?
-      keys.map { |key| first[key] }
-    else
-      first[keys.first]
-    end
-  end
-
-  # Returns a new +Array+ without the blank items.
-  # Uses Object#blank? for determining if an item is blank.
-  #
-  #    [1, "", nil, 2, " ", [], {}, false, true].compact_blank
-  #    # =>  [1, 2, true]
-  #
-  #    Set.new([nil, "", 1, 2])
-  #    # => [2, 1] (or [1, 2])
-  #
-  # When called on a +Hash+, returns a new +Hash+ without the blank values.
-  #
-  #    { a: "", b: 1, c: nil, d: [], e: false, f: true }.compact_blank
-  #    #=> { b: 1, f: true }
-  def compact_blank
-    reject(&:blank?)
-  end
-end
-
-class Hash
-  # Hash#reject has its own definition, so this needs one too.
-  def compact_blank #:nodoc:
-    reject { |_k, v| v.blank? }
-  end
-
-  # Removes all blank values from the +Hash+ in place and returns self.
-  # Uses Object#blank? for determining if a value is blank.
-  #
-  #    h = { a: "", b: 1, c: nil, d: [], e: false, f: true }
-  #    h.compact_blank!
-  #    # => { b: 1, f: true }
-  def compact_blank!
-    # use delete_if rather than reject! because it always returns self even if nothing changed
-    delete_if { |_k, v| v.blank? }
-  end
-end
-
-class Range #:nodoc:
-  # Optimize range sum to use arithmetic progression if a block is not given and
-  # we have a range of numeric values.
-  def sum(identity = nil)
-    if block_given? || !(first.is_a?(Integer) && last.is_a?(Integer))
-      super
-    else
-      actual_last = exclude_end? ? (last - 1) : last
-      if actual_last >= first
-        sum = identity || 0
-        sum + (actual_last - first + 1) * (actual_last + first) / 2
-      else
-        identity || 0
-      end
-    end
-  end
-end
-
-# Using Refinements here in order not to expose our internal method
-using Module.new {
-  refine Array do
-    alias :orig_sum :sum
-  end
-}
-
-class Array #:nodoc:
-  # Array#sum was added in Ruby 2.4 but it only works with Numeric elements.
-  def sum(init = nil, &block)
-    if init.is_a?(Numeric) || first.is_a?(Numeric)
-      init ||= 0
-      orig_sum(init, &block)
-    else
-      super
-    end
-  end
-
-  # Removes all blank elements from the +Array+ in place and returns self.
-  # Uses Object#blank? for determining if an item is blank.
-  #
-  #    a = [1, "", nil, 2, " ", [], {}, false, true]
-  #    a.compact_blank!
-  #    # =>  [1, 2, true]
-  def compact_blank!
-    # use delete_if rather than reject! because it always returns self even if nothing changed
-    delete_if(&:blank?)
-  end
-end

Library/Homebrew/vendor/bundle/ruby/3.1.0/gems/activesupport-6.1.7.6/lib/active_support/core_ext/hash/deep_transform_values.rb

@@ -1,46 +0,0 @@
-# frozen_string_literal: true
-
-class Hash
-  # Returns a new hash with all values converted by the block operation.
-  # This includes the values from the root hash and from all
-  # nested hashes and arrays.
-  #
-  #  hash = { person: { name: 'Rob', age: '28' } }
-  #
-  #  hash.deep_transform_values{ |value| value.to_s.upcase }
-  #  # => {person: {name: "ROB", age: "28"}}
-  def deep_transform_values(&block)
-    _deep_transform_values_in_object(self, &block)
-  end
-
-  # Destructively converts all values by using the block operation.
-  # This includes the values from the root hash and from all
-  # nested hashes and arrays.
-  def deep_transform_values!(&block)
-    _deep_transform_values_in_object!(self, &block)
-  end
-
-  private
-    # Support methods for deep transforming nested hashes and arrays.
-    def _deep_transform_values_in_object(object, &block)
-      case object
-      when Hash
-        object.transform_values { |value| _deep_transform_values_in_object(value, &block) }
-      when Array
-        object.map { |e| _deep_transform_values_in_object(e, &block) }
-      else
-        yield(object)
-      end
-    end
-
-    def _deep_transform_values_in_object!(object, &block)
-      case object
-      when Hash
-        object.transform_values! { |value| _deep_transform_values_in_object!(value, &block) }
-      when Array
-        object.map! { |e| _deep_transform_values_in_object!(e, &block) }
-      else
-        yield(object)
-      end
-    end
-end

Library/Homebrew/vendor/bundle/ruby/3.1.0/gems/activesupport-6.1.7.6/lib/active_support/core_ext/hash/keys.rb

@@ -1,143 +0,0 @@
-# frozen_string_literal: true
-
-class Hash
-  # Returns a new hash with all keys converted to strings.
-  #
-  #   hash = { name: 'Rob', age: '28' }
-  #
-  #   hash.stringify_keys
-  #   # => {"name"=>"Rob", "age"=>"28"}
-  def stringify_keys
-    transform_keys(&:to_s)
-  end
-
-  # Destructively converts all keys to strings. Same as
-  # +stringify_keys+, but modifies +self+.
-  def stringify_keys!
-    transform_keys!(&:to_s)
-  end
-
-  # Returns a new hash with all keys converted to symbols, as long as
-  # they respond to +to_sym+.
-  #
-  #   hash = { 'name' => 'Rob', 'age' => '28' }
-  #
-  #   hash.symbolize_keys
-  #   # => {:name=>"Rob", :age=>"28"}
-  def symbolize_keys
-    transform_keys { |key| key.to_sym rescue key }
-  end
-  alias_method :to_options,  :symbolize_keys
-
-  # Destructively converts all keys to symbols, as long as they respond
-  # to +to_sym+. Same as +symbolize_keys+, but modifies +self+.
-  def symbolize_keys!
-    transform_keys! { |key| key.to_sym rescue key }
-  end
-  alias_method :to_options!, :symbolize_keys!
-
-  # Validates all keys in a hash match <tt>*valid_keys</tt>, raising
-  # +ArgumentError+ on a mismatch.
-  #
-  # Note that keys are treated differently than HashWithIndifferentAccess,
-  # meaning that string and symbol keys will not match.
-  #
-  #   { name: 'Rob', years: '28' }.assert_valid_keys(:name, :age) # => raises "ArgumentError: Unknown key: :years. Valid keys are: :name, :age"
-  #   { name: 'Rob', age: '28' }.assert_valid_keys('name', 'age') # => raises "ArgumentError: Unknown key: :name. Valid keys are: 'name', 'age'"
-  #   { name: 'Rob', age: '28' }.assert_valid_keys(:name, :age)   # => passes, raises nothing
-  def assert_valid_keys(*valid_keys)
-    valid_keys.flatten!
-    each_key do |k|
-      unless valid_keys.include?(k)
-        raise ArgumentError.new("Unknown key: #{k.inspect}. Valid keys are: #{valid_keys.map(&:inspect).join(', ')}")
-      end
-    end
-  end
-
-  # Returns a new hash with all keys converted by the block operation.
-  # This includes the keys from the root hash and from all
-  # nested hashes and arrays.
-  #
-  #  hash = { person: { name: 'Rob', age: '28' } }
-  #
-  #  hash.deep_transform_keys{ |key| key.to_s.upcase }
-  #  # => {"PERSON"=>{"NAME"=>"Rob", "AGE"=>"28"}}
-  def deep_transform_keys(&block)
-    _deep_transform_keys_in_object(self, &block)
-  end
-
-  # Destructively converts all keys by using the block operation.
-  # This includes the keys from the root hash and from all
-  # nested hashes and arrays.
-  def deep_transform_keys!(&block)
-    _deep_transform_keys_in_object!(self, &block)
-  end
-
-  # Returns a new hash with all keys converted to strings.
-  # This includes the keys from the root hash and from all
-  # nested hashes and arrays.
-  #
-  #   hash = { person: { name: 'Rob', age: '28' } }
-  #
-  #   hash.deep_stringify_keys
-  #   # => {"person"=>{"name"=>"Rob", "age"=>"28"}}
-  def deep_stringify_keys
-    deep_transform_keys(&:to_s)
-  end
-
-  # Destructively converts all keys to strings.
-  # This includes the keys from the root hash and from all
-  # nested hashes and arrays.
-  def deep_stringify_keys!
-    deep_transform_keys!(&:to_s)
-  end
-
-  # Returns a new hash with all keys converted to symbols, as long as
-  # they respond to +to_sym+. This includes the keys from the root hash
-  # and from all nested hashes and arrays.
-  #
-  #   hash = { 'person' => { 'name' => 'Rob', 'age' => '28' } }
-  #
-  #   hash.deep_symbolize_keys
-  #   # => {:person=>{:name=>"Rob", :age=>"28"}}
-  def deep_symbolize_keys
-    deep_transform_keys { |key| key.to_sym rescue key }
-  end
-
-  # Destructively converts all keys to symbols, as long as they respond
-  # to +to_sym+. This includes the keys from the root hash and from all
-  # nested hashes and arrays.
-  def deep_symbolize_keys!
-    deep_transform_keys! { |key| key.to_sym rescue key }
-  end
-
-  private
-    # Support methods for deep transforming nested hashes and arrays.
-    def _deep_transform_keys_in_object(object, &block)
-      case object
-      when Hash
-        object.each_with_object({}) do |(key, value), result|
-          result[yield(key)] = _deep_transform_keys_in_object(value, &block)
-        end
-      when Array
-        object.map { |e| _deep_transform_keys_in_object(e, &block) }
-      else
-        object
-      end
-    end
-
-    def _deep_transform_keys_in_object!(object, &block)
-      case object
-      when Hash
-        object.keys.each do |key|
-          value = object.delete(key)
-          object[yield(key)] = _deep_transform_keys_in_object!(value, &block)
-        end
-        object
-      when Array
-        object.map! { |e| _deep_transform_keys_in_object!(e, &block) }
-      else
-        object
-      end
-    end
-end