Sequelize有许多include返回对象而不是数组

模型定义:

sequelize.define('Parent', {name: DataTypes.STRING})
sequelize.define('Child', {name: DataTypes.STRING})

Parent.hasMany(Child, {
  foreignKey: 'parent_id',
  as: 'child'
})

Child.belongsTo(Parent)

包含功能:

Parent.findByPk(pk, {
  include: [{
    model: Child,
    as: 'child',
    where: {
      name: 'benny'
    }
  }]
})

{
  "id": 1,
  "name": "parent name",
  "child": [
    {
      "id": 2
      "name": "benny",
      "parent_id": 1
    }
  ]
}

我希望它返回的内容(我在文档中没有看到任何支持或提及)

{
  "id": 1,
  "name": "parent name",
  "child": {
    "id": 2
    "name": "benny",
    "parent_id": 1
  }
}

区别在于 Child