Getting CoreMongooseArray instead of normal array - node.js

Question

I have this schema:
var orderSchema = new mongoose.Schema({
history: [{
"type": {
type: String,
enum: [
'ORDER_HISTORY_DRIVER_DETAILS',
'ORDER_HISTORY_LOADING',
'ORDER_HISTORY_LOCATION',
'ORDER_HISTORY_UNLOADING'
],
required: true
},
date: {
type: Date
},
state: {
type: String,
enum: [
'ORDER_HISTORY_STEP_STATE_COMPLETED',
'ORDER_HISTORY_STEP_STATE_CURRENT',
'ORDER_HISTORY_STEP_STATE_FUTURE',
],
default: 'ORDER_HISTORY_STEP_STATE_FUTURE',
required: true
}
}]
})
At one point, I need to remove all subdocuments that have a type of "ORDER_HISTORY_LOCATION", so I'm running this:
let result = await Order.findOneAndUpdate(
{orderId: req.params.orderId},
{
$pull: {
history: {type: "ORDER_HISTORY_LOCATION"}
}
}, {new: true}
);
When i log "result.history" i get this:
CoreMongooseArray [
{ state: 'ORDER_HISTORY_STEP_STATE_CURRENT',
_id: 5caf8a41641e6717d835483d,
type: 'ORDER_HISTORY_DRIVER_DETAILS' },
{ state: 'ORDER_HISTORY_STEP_STATE_FUTURE',
_id: 5caf8a41641e6717d835483c,
type: 'ORDER_HISTORY_LOADING',
date: 2019-05-08T09:00:00.000Z },
{ state: 'ORDER_HISTORY_STEP_STATE_FUTURE',
_id: 5caf8a41641e6717d835483b,
type: 'ORDER_HISTORY_LOADING',
date: 2019-05-09T09:00:00.000Z },
{ state: 'ORDER_HISTORY_STEP_STATE_FUTURE',
_id: 5caf8a41641e6717d8354837,
type: 'ORDER_HISTORY_UNLOADING',
date: 2019-05-13T09:00:00.000Z } ]
What is this "CoreMongooseArray"? I can't do anything with it. I also can't find any documentation on it.

Answer 1

CoreMongooseArray seems to be inheriting the Array type and has almost the same behavior.
Source code (at the time of writting) : https://github.com/Automattic/mongoose/blob/3e523631daa48a910b5335c747b3e5d080966e6d/lib/types/core_array.js
In case you want to convert it to a simple array, just do this :
const history = Array.from(...result.history)
Beware, if this array contains objects, each object will have undesirable additional Mongoose properties, as they are Mongoose schemas documents. You will need to convert them into plain JavaScript objects :
const history = Array.from(...result.history).map(v => v.toJSON())
Hope it helps.

Answer 2

This worked for me!
const history = Array.from([...result.history])