Drop Hashie dependency

lib/github_changelog_generator/generator/generator_tags.rb

@@ -40,21 +40,22 @@ module GitHubChangelogGenerator
       end.reverse!
     end
 
-    # Try to find tag date in local hash.
+    # Returns date for given GitHub Tag hash
-    # Otherwise fFetch tag time and put it to local hash file.
+    #
-    # @param [Hash] tag_name name of the tag
+    # Memoize the date by tag name.
+    #
+    # @param [Hash] tag_hash
+    #
     # @return [Time] time of specified tag
     def get_time_of_tag(tag_name)
       raise ChangelogGeneratorError, "tag_name is nil" if tag_name.nil?
 
-      name_of_tag = tag_name["name"]
+      name_of_tag = tag_hash.fetch("name")
-      time_for_name = @tag_times_hash[name_of_tag]
+      time_for_tag_name = @tag_times_hash[name_of_tag]
-      if !time_for_name.nil?
+      return time_for_tag_name if time_for_tag_name
-        time_for_name
+
-      else
+      @fetcher.fetch_date_of_tag(tag_hash).tap do |time_string|
-        time_string = @fetcher.fetch_date_of_tag tag_name
         @tag_times_hash[name_of_tag] = time_string
-        time_string
       end
     end
 
@@ -151,7 +152,7 @@ module GitHubChangelogGenerator
 
       if @options[:between_tags]
         @options[:between_tags].each do |tag|
-          unless tag_names.include? tag
+          unless tag_names.include?(tag)
             Helper.log.warn "Warning: can't find tag #{tag}, specified with --between-tags option."
           end
         end
@@ -207,7 +208,7 @@ module GitHubChangelogGenerator
     end
 
     def warn_if_tag_not_found(all_tags, tag)
-      unless all_tags.map { |t| t["name"] }.include? tag
+      unless all_tags.map { |t| t["name"] }.include?(tag)
         Helper.log.warn "Warning: can't find tag #{tag}, specified with --exclude-tags option."
       end
     end

lib/github_changelog_generator/octo_fetcher.rb

@@ -200,7 +200,8 @@ Make sure, that you push tags to remote repo via 'git push --tags'".yellow
 
     # Fetch tag time from repo
     #
-    # @param [Hash] tag
+    # @param [Hash] tag GitHub data item about a Tag
+    #
     # @return [Time] time of specified tag
     def fetch_date_of_tag(tag)
       commit_data = check_github_response { @client.commit(user_project, tag["commit"]["sha"]) }

spec/unit/generator/generator_tags_spec.rb

@@ -1,7 +1,9 @@
 # frozen_string_literal: true
 describe GitHubChangelogGenerator::Generator do
   def tag_with_name(tag)
-    {}.tap { |mash_tag| mash_tag["name"] = tag }
+    {
+      'name' => tag
+    }
   end
 
   def tags_from_strings(tags_strings)