fix(lint): rubocop linting

Gemfile

@@ -4,3 +4,12 @@ source "https://rubygems.org"
 
 # dependencies are specified in md_to_pdf.gemspec
 gemspec
+
+group :development, :test do
+  gem 'pdf-inspector', '~> 1.3'
+  gem 'rake', '~> 13.1'
+  gem 'rspec', '~> 3.12'
+  gem 'rubocop', '~> 1.59'
+  gem 'rubocop-rake', '~> 0.6'
+  gem 'rubocop-rspec', '~> 2.25'
+end

lib/md_to_pdf/elements/html.rb

@@ -198,7 +198,7 @@ def draw_html_tag(tag, node, opts)
     def find_img_caption(tag)
       if tag.name == 'figure'
         figcaption = tag.search("figcaption").first
-        return figcaption.text unless figcaption.nil?
+        figcaption&.text
       elsif tag.parent
         find_img_caption(tag.parent)
       end

lib/md_to_pdf/elements/list.rb

@@ -170,7 +170,7 @@ def list_bullet(style, is_ordered, is_task_list, number, is_checked)
     end
 
     def tasklist?(node)
-      !node.to_a.select { |list_item| list_item.type_string == 'tasklist' }.empty?
+      node.to_a.any? { |list_item| list_item.type_string == 'tasklist' }
     end
 
     def task_list_checked?(node)

lib/md_to_pdf/style/helper.rb

@@ -79,7 +79,7 @@ def opt_task_list_point_sign(style, is_checked)
     end
 
     def opt_list_point_sign(style)
-      ((style[:sign] || '•')).to_s
+      (style[:sign] || '•').to_s
     end
 
     def list_point_alphabetically(int)

lib/md_to_pdf/style/styles.rb

@@ -78,7 +78,7 @@ def hrule
     end
 
     def headline_level(level)
-      get_style("header_#{level}".to_sym)
+      get_style(:"header_#{level}")
     end
 
     def footnote_reference
@@ -114,15 +114,15 @@ def list(is_ordered)
     end
 
     def list_level(is_ordered, level)
-      get_style("#{is_ordered ? :ordered_list : :unordered_list}_#{level}".to_sym)
+      get_style(:"#{is_ordered ? :ordered_list : :unordered_list}_#{level}")
     end
 
     def list_point(is_ordered)
       get_style(is_ordered ? :ordered_list_point : :unordered_list_point)
     end
 
     def list_point_level(is_ordered, level)
-      get_style("#{is_ordered ? :ordered_list : :unordered_list}_point_#{level}".to_sym)
+      get_style(:"#{is_ordered ? :ordered_list : :unordered_list}_point_#{level}")
     end
 
     def table

md_to_pdf.gemspec

@@ -26,13 +26,6 @@ Gem::Specification.new do |s|
   s.add_runtime_dependency "prawn-table", ["~> 0.2"]
   s.add_runtime_dependency "text-hyphen", ["~> 1.5"]
 
-  s.add_development_dependency 'pdf-inspector', "~> 1.3"
-  s.add_development_dependency "rake", "~> 13.1"
-  s.add_development_dependency "rspec", "~> 3.12"
-  s.add_development_dependency 'rubocop', '~> 1.59'
-  s.add_development_dependency 'rubocop-rake', '~> 0.6'
-  s.add_development_dependency 'rubocop-rspec', '~> 2.25'
-
   s.metadata['rubygems_mfa_required'] = 'true'
   s.metadata["homepage_uri"] = s.homepage
   s.metadata["source_code_uri"] = "https://github.com/opf/md-to-pdf"

spec/markdown_to_pdf/list_spec.rb

@@ -168,5 +168,4 @@
                  { x: 51.81067, y: 664.152, text: "At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea" },
                  { x: 36.0, y: 650.28, text: "takimata sanctus est Lorem ipsum dolor sit amet." }])
   end
-
 end