Issue

When I use the .build method to create a model. I expect the class properties to be set. When there are no class properties this works...but when the class properties are present it does NOT seem to.

Versions

sequelize: 6.11.0
sequelize-typescript: 2.1.3
typescript: 3.9.10

Issue type

[x] bug report
[ ] feature request

Actual behavior

When I .build on a Model, the @Column properties do NOT get populated with the information supplied in the build call.

Expected behavior

I would expect it to populate the class properties as when you use base sequelize and it sets properties on the class.

Steps to reproduce

Failing example... Model:

import { AllowNull, Column, DataType, Model, Table } from 'sequelize-typescript';

@Table({ modelName: 'address' })
class Address extends Model<Address> {
    @AllowNull
    @Column(DataType.STRING(50))
    address1: string;
}

export default Address;

Test:

import { Address } from "../../src";
import Chance from 'chance';

const chance = new Chance();
describe('Address model', () => {
    let address, address1;
    beforeEach(() => {
        address1 = chance.string({ length: 50 });
        address = Address.build({ address1 });
    });
    it('should set address1', () => {
        expect(address.address1).toEqual(address1)
    });
});

Result:

Error: expect(received).toEqual(expected) // deep equality

Expected: "BmJ&#W%AlPx!t9&QmwfkMW##212Gg69jaVRTv^Y*7QFn36OW3i"
Received: undefined

Working Example... Model:

import Sequelize, {Model} from 'sequelize';
import sequelize from './sequelize-instance';

class OldAddress extends Model {
}

OldAddress.init({
        address1: {
            type: Sequelize.STRING(50),
            allowNull: true
        }
    },
    {
        sequelize,
        modelName: 'address'
    });

export default OldAddress;