test.rb

# Option 1 or 2?

# 1
return @app.call(env) if @exclude && @exclude.call(env)

# 2
if @exclude && @exclude.call(env)
  return @app.call(env)
end

#3
def excluded?(env) # it would be a lot better to have a meaningful name for this
  @exclude && @exclude.call(env)
end

return @app.call(env) if excluded?(env)