(maint) - remove deprecated 'exists?'

Rakefile

@@ -89,9 +89,9 @@ task :gem_revendor do
   vendor_dir = File.join(File.dirname(__FILE__),'vendor')
   gem_list.each do |vendor|
     gem_dir = File.join(vendor_dir,vendor[:directory])
-    FileUtils.rm_rf(gem_dir) if Dir.exists?(gem_dir)
+    FileUtils.rm_rf(gem_dir) if Dir.exist?(gem_dir)
   end
-  Dir.mkdir(vendor_dir) unless Dir.exists?(vendor_dir)
+  Dir.mkdir(vendor_dir) unless Dir.exist?(vendor_dir)
 
   gem_list.each do |vendor|
     puts "Vendoring #{vendor[:directory]}..."
@@ -143,11 +143,11 @@ task build: [:gem_revendor] do
 
   file_list = ['lib', 'vendor', 'puppet-languageserver', 'puppet-debugserver', 'puppet-languageserver-sidecar', 'LICENSE']
   # Remove files in the list that do not exist.
-  file_list.reject! { |filepath| !File.exists?(filepath) }
+  file_list.reject! { |filepath| !File.exist?(filepath) }
 
   puts "Cleaning output directory..."
-  FileUtils.rm_rf Dir.glob("#{output_dir}/*") if Dir.exists?(output_dir)
-  Dir.mkdir(output_dir) unless Dir.exists?(output_dir)
+  FileUtils.rm_rf Dir.glob("#{output_dir}/*") if Dir.exist?(output_dir)
+  Dir.mkdir(output_dir) unless Dir.exist?(output_dir)
 
   puts "Fetch editor services version..."
   require_relative 'lib/puppet_editor_services/version'

spec/languageserver-sidecar/integration/puppet-languageserver-sidecar/puppet-languageserver-sidecar_spec.rb

@@ -73,7 +73,7 @@ def should_not_contain_default_functions(deserial)
 
   def expect_empty_cache
     cache = PuppetLanguageServerSidecar::Cache::FileSystem.new
-    expect(Dir.exists?(cache.cache_dir)).to eq(true), "Expected the cache directory #{cache.cache_dir} to exist"
+    expect(Dir.exist?(cache.cache_dir)).to eq(true), "Expected the cache directory #{cache.cache_dir} to exist"
     expect(Dir.glob(File.join(cache.cache_dir,'*')).count).to eq(0), "Expected the cache directory #{cache.cache_dir} to be empty"
   end