Array of structs doesn't work about dry-types HOT 4 CLOSED

class Shelf < Dry::Data::Value
  attribute :books,     Types::Strict::Array.member(Types::Maybe::Strict::String)
end

class Room < Dry::Data::Value
  attribute :shelf, Shelf
end

shelf = Shelf.new(:books => ['Some book'])

puts Room.new(:shelf => shelf).inspect

class X
end
Dry::Types.register_class(X)
Dry::Types[X][X.new] # ArgumentError: wrong number of arguments (given 1, expected 0)

class Y < Dry::Types::Struct
  attribute :y, Types::Strict::String
end
type = Dry::Types[Y]

attributes = { y: '---' }
y = Y.new(attributes) # => #<Y:0x00000004ed0d88 @y="---">
type[attributes] # => #<Y:0x00000004d265c8 @y="---">
type[y] # => #<Y:0x00000004f0bd48 @y="---">