Extracted most non-Rails logic into the icons gem

Gemfile

@@ -5,7 +5,6 @@ source "https://rubygems.org"
 # Specify your gem's dependencies in rails_icons.gemspec
 gemspec
 
-# gem "rails", "~> 7.0.6"
 gem "appraisal"
 gem "propshaft"
 

Gemfile.lock

@@ -2,7 +2,7 @@ PATH
   remote: .
   specs:
     rails_icons (1.6.1)
-      nokogiri (~> 1.16, >= 1.16.4)
+      icons (~> 0.6.0)
       rails (>= 7.0)
 
 GEM
@@ -102,6 +102,8 @@ GEM
       activesupport (>= 6.1)
     i18n (1.14.7)
       concurrent-ruby (~> 1.0)
+    icons (0.6.0)
+      nokogiri (~> 1.16, >= 1.16.4)
     io-console (0.8.1)
     irb (1.15.2)
       pp (>= 0.6.0)

gemfiles/rails_7_0.gemfile.lock

@@ -1,8 +1,8 @@
 PATH
   remote: ..
   specs:
-    rails_icons (1.6.0)
-      nokogiri (~> 1.16, >= 1.16.4)
+    rails_icons (1.6.1)
+      icons (~> 0.6.0)
       rails (>= 7.0)
 
 GEM
@@ -96,6 +96,8 @@ GEM
       activesupport (>= 6.1)
     i18n (1.14.7)
       concurrent-ruby (~> 1.0)
+    icons (0.6.0)
+      nokogiri (~> 1.16, >= 1.16.4)
     io-console (0.8.1)
     irb (1.15.2)
       pp (>= 0.6.0)

gemfiles/rails_7_1.gemfile.lock

@@ -1,8 +1,8 @@
 PATH
   remote: ..
   specs:
-    rails_icons (1.6.0)
-      nokogiri (~> 1.16, >= 1.16.4)
+    rails_icons (1.6.1)
+      icons (~> 0.6.0)
       rails (>= 7.0)
 
 GEM
@@ -110,6 +110,8 @@ GEM
       activesupport (>= 6.1)
     i18n (1.14.7)
       concurrent-ruby (~> 1.0)
+    icons (0.6.0)
+      nokogiri (~> 1.16, >= 1.16.4)
     io-console (0.8.1)
     irb (1.15.2)
       pp (>= 0.6.0)

gemfiles/rails_7_2.gemfile.lock

@@ -1,8 +1,8 @@
 PATH
   remote: ..
   specs:
-    rails_icons (1.6.0)
-      nokogiri (~> 1.16, >= 1.16.4)
+    rails_icons (1.6.1)
+      icons (~> 0.6.0)
       rails (>= 7.0)
 
 GEM
@@ -104,6 +104,8 @@ GEM
       activesupport (>= 6.1)
     i18n (1.14.7)
       concurrent-ruby (~> 1.0)
+    icons (0.6.0)
+      nokogiri (~> 1.16, >= 1.16.4)
     io-console (0.8.1)
     irb (1.15.2)
       pp (>= 0.6.0)

gemfiles/rails_8_0.gemfile.lock

@@ -1,8 +1,8 @@
 PATH
   remote: ..
   specs:
-    rails_icons (1.6.0)
-      nokogiri (~> 1.16, >= 1.16.4)
+    rails_icons (1.6.1)
+      icons (~> 0.6.0)
       rails (>= 7.0)
 
 GEM
@@ -102,6 +102,8 @@ GEM
       activesupport (>= 6.1)
     i18n (1.14.7)
       concurrent-ruby (~> 1.0)
+    icons (0.6.0)
+      nokogiri (~> 1.16, >= 1.16.4)
     io-console (0.8.1)
     irb (1.15.2)
       pp (>= 0.6.0)

gemfiles/rails_main.gemfile.lock

@@ -102,8 +102,8 @@ GIT
 PATH
   remote: ..
   specs:
-    rails_icons (1.6.0)
-      nokogiri (~> 1.16, >= 1.16.4)
+    rails_icons (1.6.1)
+      icons (~> 0.6.0)
       rails (>= 7.0)
 
 GEM
@@ -134,6 +134,8 @@ GEM
       activesupport (>= 6.1)
     i18n (1.14.7)
       concurrent-ruby (~> 1.0)
+    icons (0.6.0)
+      nokogiri (~> 1.16, >= 1.16.4)
     io-console (0.8.1)
     irb (1.15.2)
       pp (>= 0.6.0)

lib/generators/rails_icons/initializer_generator.rb

@@ -75,7 +75,7 @@ def insert_custom_configuration
     def create_custom_directory = FileUtils.mkdir_p(File.join(options[:destination], options[:custom]))
 
     def library_configuration
-      libraries.map { RailsIcons.libraries[_1.to_sym].initializer_config }.join("\n")
+      libraries.map { |library| RailsIcons.libraries[library.to_sym].initializer_config }.join("\n")
     end
 
     def custom_configuration
@@ -92,7 +92,7 @@ def custom_configuration
     def default_configuration_exists?
       line = /^\s*config\.default_library\s*=/
 
-      File.readlines(INITIALIZER).any? { _1.match?(line) }
+      File.readlines(INITIALIZER).any? { |file_line| file_line.match?(line) }
     end
 
     def libraries

lib/generators/rails_icons/sync_generator.rb

@@ -1,7 +1,6 @@
 # frozen_string_literal: true
 
 require "rails_icons/base_generator"
-require "rails_icons/sync/engine"
 
 module RailsIcons
   class SyncGenerator < RailsIcons::BaseGenerator
@@ -12,7 +11,9 @@ class SyncGenerator < RailsIcons::BaseGenerator
     class_option :library, type: :string, desc: "Choose a library (#{RailsIcons.libraries.keys.join("/")})"
     class_option :libraries, type: :array, default: [], desc: "Choose libraries (#{RailsIcons.libraries.keys.join("/")})"
 
-    def sync_icons = libraries.each { Sync::Engine.new(_1).sync }
+    def sync_icons
+      libraries.each { |library| Icons::Sync.new(library).now }
+    end
 
     private
 

lib/rails_icons.rb

@@ -1,11 +1,17 @@
 # frozen_string_literal: true
 
+require "icons"
+
 require_relative "rails_icons/version"
-require_relative "rails_icons/libraries"
-require_relative "rails_icons/configuration"
 require_relative "rails_icons/engine"
-require_relative "rails_icons/errors"
-require_relative "rails_icons/icon"
 
 module RailsIcons
+  class << self
+    def configure(&block) = Icons.configure(&block)
+
+    def configuration = Icons.configuration
+    alias_method :config, :configuration
+
+    def libraries = Icons.libraries
+  end
 end

lib/rails_icons/base_generator.rb

@@ -15,8 +15,8 @@ def initialize(*arguments)
     def validate!
       return if custom_library?
 
-      raise RailsIcons::LibraryNotFound.new("") if libraries.empty?
-      raise RailsIcons::LibraryNotFound.new(invalid_libraries.join(", ")) if invalid_libraries.any?
+      raise Icons::LibraryNotFound.new("") if libraries.empty?
+      raise Icons::LibraryNotFound.new(invalid_libraries.join(", ")) if invalid_libraries.any?
     end
 
     def validatable? = false
@@ -25,9 +25,13 @@ def libraries
       [*options.libraries, options.library].compact_blank
     end
 
-    def invalid_libraries = libraries.map(&:to_sym).map(&:downcase).reject { RailsIcons.libraries.key?(_1) }
+    def invalid_libraries
+      libraries.map(&:to_sym).map(&:downcase).reject { |library| RailsIcons.libraries.key?(library) }
+    end
 
-    def custom_library? = options.custom.present?
+    def custom_library?
+      options.custom.present?
+    end
 
     # Uses `gsub_file` as a read-only operation to check file content. This
     # approach is preferred over `File.read` because `gsub_file` is properly stubbed