[BUG] [5.12.7] Cannot create property '$isUnderneathDocArray' on string 'nested'

[gilles-yvetot]

Do you want to request a feature or report a bug?
bug

What is the current behavior?
Cannot create property '$isUnderneathDocArray' on string 'nested'

If the current behavior is a bug, please provide the steps to reproduce.

run this script:

const { Schema } = require('mongoose')

const DynamicTextMatchFeaturesSchema = new Schema({
  css: { color: String },
})

const PossibleElementsArraySchema = {
  type: [
    {
      textMatchFeatures: {
        dynamic: { type: DynamicTextMatchFeaturesSchema },
      },
    },
  ],
}

const ElementSchema = new Schema({ image: { type: String } })

const possibleElementsStrategy = {
  possibleElements: PossibleElementsArraySchema,
}

ElementSchema.add(possibleElementsStrategy)

What is the expected behavior?

To not print this message

What are the versions of Node.js, Mongoose and MongoDB you are using? Note that "latest" is not a version.
Node 14.15.1
Mongoose 5.12.7 it is working fine with 5.12.5 but not 5.12.7

[erikonrombosman]

const UserSchema = new Schema({
  name: {type: String, required: true, trim: true},
  gender: {type: String, enum: ['male', 'female', 'none']},
  email: {
    type: String,
    lowercase: true,
    required: true,
    trim: true,
    validate: [
      {validator: (value) => validator.isEmail(value), msg: 'Invalid email.'},
    ],
  },
  customerId: {type: String},
  externalId: {type: String},
  domain: {type: [String], trim: true, default: []},
  blockedDomains: {type: [String], trim: true, default: []},
  roles: [{type: String, enum: [
    'superadmin',
    'admin',
    'seller',
    'picker',
    'picker-admin',
    'user',
    'callcenter',
    'analyst',
    'analyst-1',
    'analyst-2',
    'analyst-3',
    'mobile-app-usage-report',
    'admin-app-usage-report',
  ]}],
  permissions: [{type: String}],
  profilePicture: String,
  password: {type: String, select: false},
  salt: {type: String, select: false},
  address: [AddressSchema],
  socialLogins: {
    fbId: {type: String, unique: true, sparse: true},
    googleId: {type: String, unique: true, sparse: true},
  },
  phone: {type: String},
  blocked: {type: Boolean, default: false},
  verified: {type: Boolean, default: false},
  active: {type: Boolean, default: true},
  sellerToken: {type: String, unique: true, required: true, default: randomstring.generate},
  recoverToken: {
    value: {type: String, select: false},
    expiresAt: {type: Date, select: false},
  },
  authorizedByVerification: {type: Boolean, default: false},
  verifyToken: {
    value: {type: String, select: false},
  },
  rut: {type: String},
}, {
  timestamps: true,
  usePushEach: true,
});

Having the same issue

/usr/app/node_modules/mongoose/lib/schema.js:782
schemaType.schema.singleNestedPaths[key].$isUnderneathDocArray = true;
TypeError: Cannot create property '$isUnderneathDocArray' on string 'nested'

using "mongoose": "^5.11.18", running on ubuntu 20.04, on minikube

[gilles-yvetot]

@erikonrombosman what's the exact version version installed on your machine? Not the one from package.json ?

[erikonrombosman]

@erikonrombosman what's the exact version version installed on your machine? Not the one from package.json ?

i was using "mongoose": "^5.11.18" in package.json, but changing to 5.12.5 and making some change on DockerFile fixed the problem (I know is weird)

[gilles-yvetot]

@erikonrombosman if you use the exact mongoose version to 5.12.5 or before it should work. If you use something with the caret ^ it will install the latest one 5.12.7 causing issue

[vmo-khanus]

@erikonrombosman what's the exact version version installed on your machine? Not the one from package.json ?

i was using "mongoose": "^5.11.18" in package.json, but changing to 5.12.5 and making some change on DockerFile fixed the problem (I know is weird)

@erikonrombosman - can you elaborate on the "some change on DockerFile"?

We're using mongoose 5.9.24 on Node 12/14 in AWS Lambda and this started showing up out of nowhere (exact same error).

[louisnow]

Same problem on Node 12/14.
Using 5.12.5 worked

[Jule-]

I can confirm too.

[IslandRhythms]

const mongoose = require('mongoose');
const { Schema } = require('mongoose');

const DynamicTextMatchFeaturesSchema = new Schema({
  css: { color: String },
})

const PossibleElementsArraySchema = {
  type: [
    {
      textMatchFeatures: {
        dynamic: { type: DynamicTextMatchFeaturesSchema },
      },
    },
  ],
}

const ElementSchema = new Schema({ image: { type: String } })

const possibleElementsStrategy = {
  possibleElements: PossibleElementsArraySchema,
}

ElementSchema.add(possibleElementsStrategy);

const Test = mongoose.model('Test', ElementSchema);

async function test() {
    await mongoose.connect('mongodb://localhost:27017/test', {
        useNewUrlParser: true,
        useUnifiedTopology: true
      });
     await  Test.create({image: 'image' });
}
test();

[gilles-yvetot]

@IslandRhythms you don't even need to actually connect to a database for the bug to occur