There is a model
Schema({
members: [
{
type: String,
required: true,
ref: "User"
}
],
createdAt: {
type: Date,
default: Date.now(),
required: true
},
lastMessage: {
message: {
type: String,
required: true
},
from: {
type: String,
required: true
},
createdAt: {
type: Date,
required: true
}
},
messages: [
{...