As part of the Rails 6.1 upgrade on Station, a TypeError was identified in the markdown renderer where module attributes were being defined on the singleton, not on the class. This is now a blocking error in Rails initialization, where previously it was a Ruby language level warning. You can see it's implementation into Rails here.
The relevant part of the trace of the error is as follows:
▶ bundle exec rails assets:precompile --trace
rails aborted!
TypeError: module attributes should be defined directly on class, not singleton
/Users/bgreenberg2/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/activesupport-6.1.0/lib/active_support/core_ext/module/attribute_accessors.rb:52:in `mattr_reader'
/Users/bgreenberg2/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/activesupport-6.1.0/lib/active_support/core_ext/module/attribute_accessors.rb:202:in `mattr_accessor'
/Users/bgreenberg2/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/nexmo_markdown_renderer-0.7.3/lib/nexmo_markdown_renderer/services/doc_finder.rb:9:in `singleton class'
/Users/bgreenberg2/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/nexmo_markdown_renderer-0.7.3/lib/nexmo_markdown_renderer/services/doc_finder.rb:8:in `<class:DocFinder>'
/Users/bgreenberg2/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/nexmo_markdown_renderer-0.7.3/lib/nexmo_markdown_renderer/services/doc_finder.rb:3:in `<module:Markdown>'
/Users/bgreenberg2/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/nexmo_markdown_renderer-0.7.3/lib/nexmo_markdown_renderer/services/doc_finder.rb:2:in `<module:Nexmo>'
/Users/bgreenberg2/.rbenv/versions/2.7.2/lib/ruby/gems/2.7.0/gems/nexmo_markdown_renderer-0.7.3/lib/nexmo_markdown_renderer/services/doc_finder.rb:1:in `<main>'
As part of the Rails 6.1 upgrade on Station, a
TypeErrorwas identified in the markdown renderer where module attributes were being defined on the singleton, not on the class. This is now a blocking error in Rails initialization, where previously it was a Ruby language level warning. You can see it's implementation into Rails here.The relevant part of the trace of the error is as follows: