DEV: Upgrade to Rails 7

This patch upgrades Rails to version 7.0.2.4.

lib/highlight_js.rb

@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+
+module HighlightJs
+  HIGHLIGHTJS_DIR ||= "#{Rails.root}/vendor/assets/javascripts/highlightjs/"
+
+  def self.languages
+    langs = Dir.glob(HIGHLIGHTJS_DIR + "languages/*.js").map do |path|
+      File.basename(path)[0..-8]
+    end
+
+    langs.sort
+  end
+
+  def self.bundle(langs)
+    result = File.read(HIGHLIGHTJS_DIR + "highlight.min.js")
+    langs.each do |lang|
+      begin
+        result << "\n" << File.read(HIGHLIGHTJS_DIR + "languages/#{lang}.min.js")
+      rescue Errno::ENOENT
+        # no file, don't care
+      end
+    end
+
+    result
+  end
+
+  def self.version(lang_string)
+    (@lang_string_cache ||= {})[lang_string] ||=
+      Digest::SHA1.hexdigest(bundle lang_string.split("|"))
+  end
+
+  def self.path
+    "/highlight-js/#{Discourse.current_hostname}/#{version SiteSetting.highlighted_languages}.js"
+  end
+end