floating point number in mongoose & mongodb?

Question

MongoDB

I created a user model for mongodb and ran into a problem

. I tried to create floating point values, set 0 by default, but in the console when creating a user I got:

balance: {
    ref: { type: [Function: Double], default: 0 },
    invest: { type: [Function: Double], default: 0 },
    dep: { type: [Function: Double], default: 0 },
    withdrawn: { type: [Function: Double], default: 0 }
  },

User model code:

const mongoose  = require('mongoose')
require('mongoose-double')(mongoose);
 
const SchemaTypes = mongoose.Schema.Types;
const model = mongoose.model
const Schema = mongoose.Schema

const Users = model('User', new Schema({
    id: Number,
    name: String,

    balance: {type: Object, default: {
        ref: { type: SchemaTypes.Double, default: 0 },
        invest: { type: SchemaTypes.Double, default: 0 },
        dep: { type: SchemaTypes.Double, default: 0 },
        withdrawn: { type: SchemaTypes.Double, default: 0 },
    }},

    ref: { type: Object, default: {
        score: { type: SchemaTypes.Double, default: 0 },
        refferer: Number,
    }},

    case: {type: String, default: ''},
    admin: {type: Boolean, default: false},
    lastEarn: { type: Number, default: Date.now() },
}));

I searched the Internet, but could not find information about this, the Double data type is required