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Error in lambda creation: in 'lambda': tried to create Proc object without a block (ArgumentError)

See original GitHub issue

Input

scope :sorted, ->  { order("#{table_name}.priority desc, #{table_name}.sort_order ASC, #{table_name}.name asc") }

Current output

scope :sorted,
      lambda do
        order(
          "#{table_name}.priority desc, #{table_name}.sort_order ASC, #{table_name}.name asc"
        )
      end

Running rails s generates this error: app/models/temp.rb:252:in 'lambda': tried to create Proc object without a block (ArgumentError)

Expected output

scope :sorted,
      (lambda do
        order(
          "#{table_name}.priority desc, #{table_name}.sort_order ASC, #{table_name}.name asc"
        )
      end)

Or maybe (tho this gets Rubocop yelling at me):

scope :sorted,
      -> {
        order(
          "#{table_name}.priority desc, #{table_name}.sort_order ASC, #{table_name}.name asc"
        )
      }

This also affect when a Proc in a has_many with traits afterwards:

has_many :staff, -> { where(staff_type: 2, users: { role: User::STAFF } ) }, through: users

becomes

has_many :staff,
         lambda do
           where(
             staff_type: 2, users: { role: User::STAFF }
           )
         end,
         through: :users

which returns (when run): app/models/temp.rb:221: syntax error, unexpected ',', expecting keyword_end (SyntaxError)