Revert the commits for did_you_mean

This reverts commit feaf4fbc3fa16382fbd07158c448c7b5bdae78b5.
This reverts commit 0d4bfbdbe1f880c712b3e60de5fce423e6096f8d.
This reverts commit ac4e0978ee4358430396403065eabe1aca05784f.

7 files changed, 11 insertions, 61 deletions

diff --git a/lib/did_you_mean.rb b/lib/did_you_mean.rb
index 2df238da06..6d3a6e8bda 100644
--- a/lib/did_you_mean.rb
+++ b/lib/did_you_mean.rb
@@ -86,25 +86,12 @@ require_relative 'did_you_mean/tree_spell_checker'
 #
 module DidYouMean
   # Map of error types and spell checker objects.
-  @spell_checkers = Hash.new(NullChecker)
-
-  # Returns a sharable hash map of error types and spell checker objects.
-  def self.spell_checkers
-    @spell_checkers
-  end
+  SPELL_CHECKERS = Hash.new(NullChecker)
 
   # Adds +DidYouMean+ functionality to an error using a given spell checker
   def self.correct_error(error_class, spell_checker)
-    if defined?(Ractor)
-      new_mapping = { **@spell_checkers, error_class.to_s => spell_checker }
-      new_mapping.default = NullChecker
-
-      @spell_checkers = Ractor.make_shareable(new_mapping)
-    else
-      spell_checkers[error_class.to_s] = spell_checker
-    end
-
-    error_class.prepend(Correctable) if error_class.is_a?(Class) && !(error_class < Correctable)
+    SPELL_CHECKERS[error_class.name] = spell_checker
+    error_class.prepend(Correctable) unless error_class < Correctable
   end
 
   correct_error NameError, NameErrorCheckers
@@ -113,43 +100,15 @@ module DidYouMean
   correct_error LoadError, RequirePathChecker if RUBY_VERSION >= '2.8.0'
   correct_error NoMatchingPatternKeyError, PatternKeyNameChecker if defined?(::NoMatchingPatternKeyError)
 
-  # TODO: Remove on 3.3:
-  class DeprecatedMapping # :nodoc:
-    def []=(key, value)
-      warn "Calling `DidYouMean::SPELL_CHECKERS[#{key.to_s}] = #{value.to_s}' has been deprecated. " \
-           "Please call `DidYouMean.correct_error(#{key.to_s}, #{value.to_s})' instead."
-
-      DidYouMean.correct_error(key, value)
-    end
-
-    def merge!(hash)
-      warn "Calling `DidYouMean::SPELL_CHECKERS.merge!(error_name => spell_checker)' has been deprecated. " \
-           "Please call `DidYouMean.correct_error(error_name, spell_checker)' instead."
-
-      hash.each do |error_class, spell_checker|
-        DidYouMean.correct_error(error_class, spell_checker)
-      end
-    end
-  end
-
-  # TODO: Remove on 3.3:
-  SPELL_CHECKERS = DeprecatedMapping.new
-  deprecate_constant :SPELL_CHECKERS
-  private_constant :DeprecatedMapping
-
   # Returns the currently set formatter. By default, it is set to +DidYouMean::Formatter+.
   def self.formatter
-    if defined?(Ractor)
-      Ractor.current[:__did_you_mean_formatter__] || Formatter
-    else
-      Formatter
-    end
+    @formatter
   end
 
   # Updates the primary formatter used to format the suggestions.
   def self.formatter=(formatter)
-    if defined?(Ractor)
-      Ractor.current[:__did_you_mean_formatter__] = formatter
-    end
+    @formatter = formatter
   end
+
+  @formatter = Formatter.new
 end
diff --git a/lib/did_you_mean/core_ext/name_error.rb b/lib/did_you_mean/core_ext/name_error.rb
index eb3ef117a0..7e99282b41 100644
--- a/lib/did_you_mean/core_ext/name_error.rb
+++ b/lib/did_you_mean/core_ext/name_error.rb
@@ -26,7 +26,7 @@ module DidYouMean
     end
 
     def spell_checker
-      DidYouMean.spell_checkers[self.class.to_s].new(self)
+      SPELL_CHECKERS[self.class.to_s].new(self)
     end
   end
 end
diff --git a/lib/did_you_mean/formatter.rb b/lib/did_you_mean/formatter.rb
index 02c0bc75d3..01eb59100a 100644
--- a/lib/did_you_mean/formatter.rb
+++ b/lib/did_you_mean/formatter.rb
@@ -26,7 +26,7 @@ module DidYouMean
     #
     #   # => nil
     #
-    def self.message_for(corrections)
+    def message_for(corrections)
       corrections.empty? ? "" : "\nDid you mean?  #{corrections.join("\n               ")}"
     end
   end
diff --git a/lib/did_you_mean/spell_checkers/method_name_checker.rb b/lib/did_you_mean/spell_checkers/method_name_checker.rb
index d8ebaa4616..0483127d6f 100644
--- a/lib/did_you_mean/spell_checkers/method_name_checker.rb
+++ b/lib/did_you_mean/spell_checkers/method_name_checker.rb
@@ -6,7 +6,6 @@ module DidYouMean
 
     NAMES_TO_EXCLUDE = { NilClass => nil.methods }
     NAMES_TO_EXCLUDE.default = []
-    Ractor.make_shareable(NAMES_TO_EXCLUDE) if defined?(Ractor)
 
     # +MethodNameChecker::RB_RESERVED_WORDS+ is the list of reserved words in
     # Ruby that take an argument. Unlike
@@ -37,8 +36,6 @@ module DidYouMean
       yield
     )
 
-    Ractor.make_shareable(RB_RESERVED_WORDS) if defined?(Ractor)
-
     def initialize(exception)
       @method_name  = exception.name
       @receiver     = exception.receiver
diff --git a/lib/did_you_mean/spell_checkers/name_error_checkers/variable_name_checker.rb b/lib/did_you_mean/spell_checkers/name_error_checkers/variable_name_checker.rb
index 36d00349c6..3e51b4fa3a 100644
--- a/lib/did_you_mean/spell_checkers/name_error_checkers/variable_name_checker.rb
+++ b/lib/did_you_mean/spell_checkers/name_error_checkers/variable_name_checker.rb
@@ -8,7 +8,6 @@ module DidYouMean
 
     NAMES_TO_EXCLUDE = { 'foo' => [:fork, :for] }
     NAMES_TO_EXCLUDE.default = []
-    Ractor.make_shareable(NAMES_TO_EXCLUDE) if defined?(Ractor)
 
     # +VariableNameChecker::RB_RESERVED_WORDS+ is the list of all reserved
     # words in Ruby. They could be declared like methods are, and a typo would
@@ -63,8 +62,6 @@ module DidYouMean
       __ENCODING__
     )
 
-    Ractor.make_shareable(RB_RESERVED_WORDS) if defined?(Ractor)
-
     def initialize(exception)
       @name       = exception.name.to_s.tr("@", "")
       @lvar_names = exception.respond_to?(:local_variables) ? exception.local_variables : []
diff --git a/lib/did_you_mean/spell_checkers/require_path_checker.rb b/lib/did_you_mean/spell_checkers/require_path_checker.rb
index 586ced37de..e4cdb9f43d 100644
--- a/lib/did_you_mean/spell_checkers/require_path_checker.rb
+++ b/lib/did_you_mean/spell_checkers/require_path_checker.rb
@@ -9,10 +9,7 @@ module DidYouMean
     attr_reader :path
 
     INITIAL_LOAD_PATH = $LOAD_PATH.dup.freeze
-    Ractor.make_shareable(INITIAL_LOAD_PATH) if defined?(Ractor)
-
-    ENV_SPECIFIC_EXT = ".#{RbConfig::CONFIG["DLEXT"]}"
-    Ractor.make_shareable(ENV_SPECIFIC_EXT) if defined?(Ractor)
+    ENV_SPECIFIC_EXT  = ".#{RbConfig::CONFIG["DLEXT"]}"
 
     private_constant :INITIAL_LOAD_PATH, :ENV_SPECIFIC_EXT
 
diff --git a/lib/did_you_mean/version.rb b/lib/did_you_mean/version.rb
index a0ca14e9c2..8df73e1d62 100644
--- a/lib/did_you_mean/version.rb
+++ b/lib/did_you_mean/version.rb
@@ -1,3 +1,3 @@
 module DidYouMean
-  VERSION = "1.6.1-alpha".freeze
+  VERSION = "1.6.0-alpha"
 end