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# frozen_string_literal: true
ensure_classic_mode = ->() do
if Rails.autoloaders.zeitwerk_enabled?
abort <<~EOS
Please, enable temporarily :classic mode:
# config/application.rb
config.autoloader = :classic
and try again. When all is good, you can delete that line.
EOS
end
end
eager_load = ->() do
Rails.configuration.eager_load_namespaces.each(&:eager_load!)
end
mismatches = []
check_directory = ->(directory, parent) do
# test/mailers/previews might not exist.
return unless File.exist?(directory)
Dir.foreach(directory) do |entry|
next if entry.start_with?(".")
next if parent == Object && entry == "concerns"
abspath = File.join(directory, entry)
if File.directory?(abspath) || abspath.end_with?(".rb")
print "."
cname = File.basename(abspath, ".rb").camelize.to_sym
if parent.const_defined?(cname, false)
if File.directory?(abspath)
check_directory[abspath, parent.const_get(cname)]
end
else
mismatches << [abspath, parent, cname]
end
end
end
end
report = ->() do
puts
if mismatches.empty?
puts "All is good!"
puts "Please, remember to delete `config.autoloader = :classic` from config/application.rb."
else
mismatches.each do |abspath, parent, cname|
relpath = abspath.sub(%r{\A#{Regexp.escape(Rails.root.to_path)}/}, "")
cpath = parent == Object ? cname : "#{parent.name}::#{cname}"
puts "expected #{relpath} to define #{cpath}"
end
puts
puts <<~EOS
Please revise the reported mismatches. You can normally fix them by adding
acronyms to config/initializers/inflections.rb or renaming the constants.
EOS
end
end
namespace :zeitwerk do
desc "Checks project structure for Zeitwerk compatibility"
task check: :environment do
ensure_classic_mode[]
eager_load[]
$stdout.sync = true
ActiveSupport::Dependencies.autoload_paths.each do |autoload_path|
check_directory[autoload_path, Object]
end
puts
report[]
end
end
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