feat: drop active_support dependency (#13)

Gemfile.lock

@@ -2,27 +2,16 @@ PATH
   remote: .
   specs:
     event_router (0.3.0)
-      activesupport
 
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (6.1.1)
-      concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (>= 1.6, < 2)
-      minitest (>= 5.1)
-      tzinfo (~> 2.0)
-      zeitwerk (~> 2.3)
     ast (2.4.1)
     byebug (11.1.3)
     coderay (1.1.3)
-    concurrent-ruby (1.1.8)
     connection_pool (2.2.3)
     diff-lcs (1.3)
-    i18n (1.8.7)
-      concurrent-ruby (~> 1.0)
     method_source (1.0.0)
-    minitest (5.14.3)
     oj (3.10.14)
     parallel (1.19.2)
     parser (2.7.1.4)
@@ -67,10 +56,7 @@ GEM
       connection_pool (>= 2.2.2)
       rack (~> 2.0)
       redis (>= 4.2.0)
-    tzinfo (2.0.4)
-      concurrent-ruby (~> 1.0)
     unicode-display_width (1.7.0)
-    zeitwerk (2.4.2)
 
 PLATFORMS
   ruby

event_router.gemspec

@@ -25,9 +25,6 @@ Gem::Specification.new do |spec|
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ['lib']
 
-  # Dependencies
-  spec.add_dependency 'activesupport'
-
   # Development dependencies
   spec.add_development_dependency 'oj'
   spec.add_development_dependency 'pry'

lib/event_router.rb

@@ -3,12 +3,14 @@
 require 'event_router/version'
 require 'event_router/error'
 
+require 'event_router/configuration'
 require 'event_router/event'
-require 'event_router/delivery_adapters/base'
+
 require 'event_router/serializers/base'
-require 'event_router/publisher'
 require 'event_router/serializer'
-require 'event_router/configuration'
+
+require 'event_router/delivery_adapters/base'
+require 'event_router/publisher'
 
 module EventRouter
   module_function

lib/event_router/delivery_adapters/sidekiq.rb

@@ -2,7 +2,6 @@
 
 require 'sidekiq'
 
-require 'event_router/serializer'
 require 'event_router/helpers/event'
 
 require_relative 'helpers/sidekiq'

lib/event_router/event.rb

@@ -1,8 +1,6 @@
 # frozen_string_literal: true
 
 require 'securerandom'
-require 'active_support/core_ext/class/attribute'
-require 'active_support/core_ext/string/inflections'
 
 require_relative 'destination'
 
@@ -11,9 +9,6 @@ class Event
     attr_reader :uid, :created_at, :payload
     attr_accessor :correlation_id
 
-    class_attribute :destinations, default: {}, instance_writer: false
-    class_attribute :options, instance_writer: false
-
     def initialize(uid: SecureRandom.uuid, correlation_id: SecureRandom.uuid, created_at: Time.now, **payload)
       @uid            = uid
       @correlation_id = correlation_id
@@ -33,21 +28,41 @@ def to_hash
     alias to_h to_hash
 
     def name
-      self.class.name.demodulize.underscore
+      self.class.name.gsub(/([a-z])([A-Z])/, '\1_\2').gsub(/.*::/, '').downcase
+    end
+
+    def destinations
+      self.class.destinations
+    end
+
+    def options
+      self.class.options
+    end
+
+    def options?
+      !options.nil?
     end
 
     class << self
-      def inherited(base)
-        base.destinations = destinations.dup
+      attr_reader :options
+
+      def inherited(subclass)
+        subclass.instance_variable_set(:@options, @options.dup)
+        subclass.instance_variable_set(:@destinations, @destinations.dup)
+
         super
       end
 
       def deliver_to(name, opts = {})
         destinations[name] = EventRouter::Destination.new(name, **opts)
       end
 
+      def destinations
+        @destinations ||= {}
+      end
+
       def event_options(opts)
-        self.options = opts
+        @options = opts
       end
 
       def publish(**attrs)