GeoJSON位置的猫鼬模式

Question

我希望能够使用Mongoose将设备的即时地理位置保存到Mongodb。有人可以帮我解决猫鼬模式吗？我当前的模式如下：

const User = new Schema(
    {
        userName: { type: String, required: true },
        firstName: { type: String, required: true },
        lastName: { type: String, required: true },
        primaryContact: { type: String, required: true },
        secondaryContact: { type: String, required: true },
        emergencyContact : { type: String, required: true },
        gpsLocation : //what would go in here?
    },
    { timestamps: true },
)

module.exports = mongoose.model('users', User)

谢谢！