Sequelize in Saltarelle proposal

gistfile1.cs

// library

    [Imported]
    [Reflectable]
    public interface ISequelizeEntity { }

    [Imported, IgnoreNamespace, ScriptName("Object")]
    public abstract class SequelizeEntity : ISequelizeEntity  
    {
        [ScriptSkip]
        public SequelizeEntity() { } // prevent `Object.call(this);`
        
        [IntrinsicProperty]
        public int Id { get { return 0; } }

        [IntrinsicProperty]
        public DateTime? CreatedAt { get { return null; } }

        [IntrinsicProperty]
        public DateTime? UpdatedAt { get { return null; } }
    }

// user code

    public class MyEntity : SequelizeEntity
    {
        public string A;
    }