Maintaining Ruby 2.6 compatibility about homebrew-bundle HOT 4 CLOSED

diff --git a/lib/bundle/brew_dumper.rb b/lib/bundle/brew_dumper.rb
index 45b95c7..4803f92 100644
--- a/lib/bundle/brew_dumper.rb
+++ b/lib/bundle/brew_dumper.rb
@@ -143,8 +143,7 @@ module Bundle
         installed_as_dependency = tab.installed_as_dependency
         installed_on_request = tab.installed_on_request
         runtime_dependencies = if (runtime_deps = tab.runtime_dependencies)
-          runtime_deps.filter_map { |d| d["full_name"] }
-
+          runtime_deps.map { |d| d["full_name"] }.compact
         end
         poured_from_bottle = tab.poured_from_bottle
       end
@@ -205,13 +204,13 @@ module Bundle
       # Step 2: Sort by formula dependency topology.
       topo = Topo.new
       formulae.each do |f|
-        topo[f[:name]] = topo[f[:full_name]] = f[:dependencies].filter_map do |dep|
+        topo[f[:name]] = topo[f[:full_name]] = f[:dependencies].map do |dep|
           ff = formulae_by_name(dep)
           next if ff.blank?
           next unless ff[:any_version_installed?]

           ff[:full_name]
-        end
+        end.compact
       end
       @formulae = topo.tsort
                       .map { |name| @formulae_by_full_name[name] || @formulae_by_name[name] }
diff --git a/lib/bundle/brew_installer.rb b/lib/bundle/brew_installer.rb
index 2b4d12d..b8b72f0 100644
--- a/lib/bundle/brew_installer.rb
+++ b/lib/bundle/brew_installer.rb
@@ -1,4 +1,4 @@
-# frozen_string_literal: true
+# frozen_string_literal: true.compact

 module Bundle
   class BrewInstaller
@@ -172,19 +172,19 @@ module Bundle
     end

     def self.outdated_formulae
-      @outdated_formulae ||= formulae.filter_map { |f| f[:name] if f[:outdated?] }
+      @outdated_formulae ||= formulae.map { |f| f[:name] if f[:outdated?] }.compact
     end

     def self.pinned_formulae
-      @pinned_formulae ||= formulae.filter_map { |f| f[:name] if f[:pinned?] }
+      @pinned_formulae ||= formulae.map { |f| f[:name] if f[:pinned?] }.compact
     end

     def self.linked_and_keg_only_formulae
-      @linked_and_keg_only_formulae ||= formulae.filter_map { |f| f[:name] if f[:link?] == true }
+      @linked_and_keg_only_formulae ||= formulae.map { |f| f[:name] if f[:link?] == true }.compact
     end

     def self.unlinked_and_not_keg_only_formulae
-      @unlinked_and_not_keg_only_formulae ||= formulae.filter_map { |f| f[:name] if f[:link?] == false }
+      @unlinked_and_not_keg_only_formulae ||= formulae.map { |f| f[:name] if f[:link?] == false }.compact
     end

     def self.formulae
diff --git a/lib/bundle/brew_services.rb b/lib/bundle/brew_services.rb
index c5fad23..47cd14b 100644
--- a/lib/bundle/brew_services.rb
+++ b/lib/bundle/brew_services.rb
@@ -38,12 +38,12 @@ module Bundle
     def started_services
       @started_services ||= if Bundle.services_installed?
         states_to_skip = %w[stopped none]
-        Utils.safe_popen_read(HOMEBREW_BREW_FILE, "services", "list").lines.filter_map do |line|
+        Utils.safe_popen_read(HOMEBREW_BREW_FILE, "services", "list").lines.map do |line|
           name, state, _plist = line.split(/\s+/)
           next if states_to_skip.include? state

           name
-        end
+        end.compact
       else
         []
       end
diff --git a/lib/bundle/cask_installer.rb b/lib/bundle/cask_installer.rb
index 345ea3e..2e194a1 100644
--- a/lib/bundle/cask_installer.rb
+++ b/lib/bundle/cask_installer.rb
@@ -37,7 +37,7 @@ module Bundle
         return Bundle.system HOMEBREW_BREW_FILE, "upgrade", "--cask", full_name, verbose: verbose
       end

-      args = options.fetch(:args, []).filter_map do |k, v|
+      args = options.fetch(:args, []).map do |k, v|
         case v
         when TrueClass
           "--#{k}"
@@ -46,7 +46,7 @@ module Bundle
         else
           "--#{k}=#{v}"
         end
-      end
+      end.compact

       args << "--force" if force
       args.uniq!

❯ /usr/bin/ruby --version
ruby 2.6.10p210 (2022-04-12 revision 67958) [universal.arm64e-darwin23]