Mongoose: `findOneAndUpdate()` and `findOneAndDelete()` without the `useFindAndModify

 

报错 ：DeprecationWarning: Mongoose: `findOneAndUpdate()` and `findOneAndDelete()` without the `useFindAndModify` option set to false are deprecated. See: https://mongoosejs.com/docs/deprecations.html#-findandmodify-

 

 原因是因为:findOneAndUpdate()内部会使用findAndModify驱动，驱动即将被废弃，所以弹出警告！附上官方解释：Mongoose v5.5.8: Deprecation Warnings

解决：在使用mongoose时，加上mongoose.set('useFindAndModify', false)

即：

就可以了