Failed to create index with @Index Decorator when using table option of undescore:true

[OkoyeApps]

Issue

Versions

• sequelize: 6.37.1 (I also downgraded to 6.35.0)
• sequelize-typescript: 2.1.6
• typescript: ^5.1.3

Issue type

• [ x] bug report
• feature request

Actual behavior

When you set the underscore: true option in the @Table configuration and also use @Index Decorator, Sequelize-Typescript doesn't remember/consider this setting when creating the Index.

e.g If you have a column name of emailAddress and the underscore:true option is set in the configuration. Sequelize-Typescript goes ahead to try creating a column with the name emailAddress instead of email_address which results in an error.

Expected behavior

The configuration option should be remembered and used when creating an index with the Index Decorator.

Steps to reproduce

• Create a table
• Add the underscore: true option to the table options
• add a column that uses camelCase
• add an index to that column e.g emailAddress
• sequelize-typescript fails to create this index because it doesn't remember the underscore:true option initially set

Related code

import { Optional } from "sequelize";
import { Table, Column, DataType, Index, PrimaryKey, Model } from "sequelize-typescript";

interface UserAttributes {
    id: number;
    phoneNumber: string;
    password: string;
    emailAddress: string;
    userType: number;
    isActive: boolean;

};
interface UserCreationAttributes extends Optional<UserAttributes, 'id' | 'emailAddress' | 'phoneNumber'> { };

@Table({
    timestamps: true,
    tableName: 'user',
    underscored: true,
/**
* Using this syntax works as when debugging I noticed the issue and decided to use this syntax.
* I guess this behaviour is ok since you're opting in to specifying the field yourself 
**/
   // indexes: [
    //    { fields: ['email_address'], unique: true },
    //    { fields: ['phone_number'], unique: true, },
  //  ]
})
export class UserModel extends Model<UserAttributes, UserCreationAttributes>{
    @PrimaryKey
    @Column
    id: number;

    @Index
    @Column({ allowNull: true, unique: true, type: DataType.STRING(255) })
    emailAddress: string;

    @Index
    @Column({ allowNull: true, unique: true, type: DataType.STRING(32) })
    phoneNumber: string;

    @Column({ allowNull: false, type: DataType.SMALLINT })
    userType: number;

    @Column({ defaultValue: true, type: DataType.BOOLEAN })
    isActive: boolean;

    @Column({ allowNull: false, type: DataType.STRING(320) })
    password: string;
};

@RobinBuschmann @Toxicable @lukashroch