Ruby 3.3 warnings about gems being removed from the standard library

[zorab47]

General information

• SDK/Library version: 4.22
• Environment: Sandbox and Production
• Language, language version, and OS: Ruby 3.3.x

Issue description

Loading the braintree Ruby gem emits warnings about gems being removed from the standard library in a future version of Ruby. The following gems should be added as dependencies in the gemfile:

• base64
• bigdecimal
• ostruct

❯ ruby -v
ruby 3.3.4 (2024-07-09 revision be1089c8ec) [x86_64-darwin23]

❯ ruby braintree_ruby_dependency_warnings.rb
/Users/$HOME/.gem/ruby/3.3.4/gems/braintree-4.22.0/lib/braintree.rb:1: warning: base64 was loaded from the standard library, but will no longer be part of the default gems since Ruby 3.4.0. Add base64 to your Gemfile or gemspec. Also contact author of braintree-4.22.0 to add base64 into its gemspec.
/Users/$HOME/.gem/ruby/3.3.4/gems/braintree-4.22.0/lib/braintree.rb:2: warning: bigdecimal was loaded from the standard library, but will no longer be part of the default gems since Ruby 3.4.0. Add bigdecimal to your Gemfile or gemspec. Also contact author of braintree-4.22.0 to add bigdecimal into its gemspec.

It isn't listed when running require "braintree" but ostruct is another of the gems used in the Braintree::WebhookNotification class. It is listed in my applications log messages when processing webhooks:

/usr/local/bundle/gems/braintree-4.22.0/lib/braintree/webhook_notification.rb:1: warning: ostruct was loaded from the standard library, but will no longer be part of the default gems starting from Ruby 3.5.0.

You can reproduce by running the following with Ruby 3.3:

require 'bundler/inline'

gemfile do
  source 'https://rubygems.org'
  gem 'braintree', require: false
end

require "braintree"

[BrianHawley]

This also happens on Ruby 3.4, which is out now.

[zorab47]

Loading the braintree library on Ruby 3.4 errors due to missing dependencies: base64 and bigdecimal. I'll open another issue for Ruby 3.4.