Rakefile in h3-3.3.1 vs Rakefile in h3-3.4.0

@@ -1,27 +1,27 @@
 require "rspec/core/rake_task"
 RSpec::Core::RakeTask.new(:spec)
 
 desc "Build H3 C library"
 task :build do
-  unless File.exists?("ext/h3/src/Makefile")
+  unless File.exist?("ext/h3/src/Makefile")
     `git submodule update --init --recursive`
     print "Building h3..."
     `cd ext/h3; make > /dev/null 2>&1`
     puts " done."
   end
 end
 
 desc "Remove compiled H3 library"
 task :clean do
-  File.delete("ext/h3/src/Makefile") if File.exists?("ext/h3/src/Makefile")
-  FileUtils.remove_dir("ext/h3/src/bin") if Dir.exists?("ext/h3/src/bin")
-  FileUtils.remove_dir("ext/h3/src/generated") if Dir.exists?("ext/h3/src/generated")
-  FileUtils.remove_dir("ext/h3/src/lib") if Dir.exists?("ext/h3/src/lib")
+  File.delete("ext/h3/src/Makefile") if File.exist?("ext/h3/src/Makefile")
+  FileUtils.remove_dir("ext/h3/src/bin") if Dir.exist?("ext/h3/src/bin")
+  FileUtils.remove_dir("ext/h3/src/generated") if Dir.exist?("ext/h3/src/generated")
+  FileUtils.remove_dir("ext/h3/src/lib") if Dir.exist?("ext/h3/src/lib")
 end
 
 task spec: :build
 
 desc "Recompile the H3 C library"
-task rebuild: [:clean, :build]
+task rebuild: %i[clean build]
 
 task default: :spec