external_links.rb in nanoc-4.5.1

- old
+ new

@@ -1,8 +1,7 @@
 require 'net/http'
 require 'net/https'
-require 'nokogiri'
 require 'timeout'
 require 'uri'
 
 module ::Nanoc::Checking::Checks
   # A validator that verifies that all external links point to a location that exists.
@@ -10,9 +9,11 @@
   # @api private
   class ExternalLinks < ::Nanoc::Checking::Check
     identifiers :external_links, :elinks
 
     def run
+      require 'nokogiri'
+
       # Find all broken external hrefs
       # TODO: de-duplicate this (duplicated in internal links check)
       filenames = output_filenames.select { |f| File.extname(f) == '.html' && !excluded_file?(f) }
       hrefs_with_filenames = ::Nanoc::Extra::LinkCollector.new(filenames, :external).filenames_per_href
       results = select_invalid(hrefs_with_filenames.keys)