MouseX::Types::Mouse (3pm)

  package Foo;
  use Mouse;
  use MouseX::Types::Mouse qw( Int ArrayRef );

  has name => (
    is  => 'rw',
    isa => Str;
  );

  has ids => (
    is  => 'rw',
    isa => ArrayRef[Int],
  );

  1;

MouseX::Types

Mouse::Util::TypeConstraints