schema.plugin() must be a function got object

[warlockdn]

I have a schema with

const mongoose = require('mongoose');
const autoIncrement = require('mongoose-plugin-autoinc');

// Initialize Auto Increment 
const connection = mongoose.createConnection("mongodb://localhost:27017/food");

const partnerSchema = new mongoose.Schema({
    partnerID: { type: Number, index: true, unique: true }
});

partnerSchema.plugin(autoIncrement, {
    model: 'Partner',
    field: 'partnerID',
    startAt: 100300,
    incrementBy: 3
});

When I run this I keep getting duplicate index error. Can you tell me where I am wrong ?

[nodkz]

Take a look at the collection identitycounter in your Database. It created by mongoose-plugin-autoinc and may contain an incorrect value for next counter.

So when you add a new record, identitycounter provide next value, eg (100). But in your collection, you already have a record with such id and MongoDB throws an error.