Typescript error: Generated models cannot be used where Sequelize expects a "Model"

[JeongJuhyeon]

sequelize 6.3.5, sequelize-auto 0.8.3 The biggest issue where this happens is "through" associations that get generated in init-models.

init-models.ts

external_company.belongsToMany(job_auction, {
    as: 'job_auction_id_job_auctions',
    through: job_auction_designated,
    foreignKey: 'company_id',
    otherKey: 'job_auction_id',
  });

Error on "through" attribute:

Type 'typeof job_auction_designated' is not assignable to type 'string | typeof Model | ThroughOptions'.
  Types of construct signatures are incompatible.
    Type 'new (values?: job_auction_designatedCreationAttributes | undefined, options?: BuildOptions | undefined) => job_auction_designated' is not assignable to type 'abstract new <TModelAttributes extends {} = any, TCreationAttributes extends {} = TModelAttributes>(values?: TCreationAttributes | undefined, options?: BuildOptions | undefined) => Model<TModelAttributes, TCreationAttributes>'.
      Construct signature return types 'job_auction_designated' and 'Model<TModelAttributes, TCreationAttributes>' are incompatible.
        The types of '_attributes' are incompatible between these types.
          Type 'job_auction_designatedAttributes' is not assignable to type 'TModelAttributes'.
            'job_auction_designatedAttributes' is assignable to the constraint of type 'TModelAttributes', but 'TModelAttributes' could be instantiated with a different subtype of constraint '{}'.

For reference, here's part of the generated model in question

export class job_auction_designated extends Model<job_auction_designatedAttributes, job_auction_designatedCreationAttributes> implements job_auction_designatedAttributes {
  company_id!: string;
  date_create?: Date;
  job_auction_id!: number;

  // job_auction_designated belongsTo external_company via company_id
  company!: external_company;
  getCompany!: Sequelize.BelongsToGetAssociationMixin<external_company>;
  setCompany!: Sequelize.BelongsToSetAssociationMixin<external_company, external_companyId>;
  createCompany!: Sequelize.BelongsToCreateAssociationMixin<external_company>;
  // job_auction_designated belongsTo job_auction via job_auction_id
  job_auction!: job_auction;
  getJob_auction!: Sequelize.BelongsToGetAssociationMixin<job_auction>;
  setJob_auction!: Sequelize.BelongsToSetAssociationMixin<job_auction, job_auctionId>;
  createJob_auction!: Sequelize.BelongsToCreateAssociationMixin<job_auction>;

  static initModel(sequelize: Sequelize.Sequelize): typeof job_auction_designated {
  ...

Pretty much the same error happens when using any generated model as the "model" parameter of an include. Example:

brand.getBoards({include: {model: board}})

Error

Type '{ model: typeof board; }' is not assignable to type 'Includeable | Includeable[] | undefined'.
  Types of property 'model' are incompatible.
    Type 'typeof board' is not assignable to type 'typeof Model'.
      Types of construct signatures are incompatible.
        Type 'new (values?: boardCreationAttributes | undefined, options?: BuildOptions | undefined) => board' is not assignable to type 'abstract new <TModelAttributes extends {} = any, TCreationAttributes extends {} = TModelAttributes>(values?: TCreationAttributes | undefined, options?: BuildOptions | undefined) => Model<TModelAttributes, TCreationAttributes>'.
          Types of parameters 'values' and 'values' are incompatible.
            Type 'TCreationAttributes | undefined' is not assignable to type 'boardCreationAttributes | undefined'.
              Type 'TCreationAttributes' is not assignable to type 'boardCreationAttributes | undefined'.
                Type '{}' is not assignable to type 'boardCreationAttributes'.
                  Type '{}' is not assignable to type 'Omit<boardAttributes, "board_id">'.
                    Type 'TCreationAttributes' is not assignable to type 'boardCreationAttributes'.
                      Type '{}' is not assignable to type 'boardCreationAttributes'.
                        Type '{}' is not assignable to type 'Omit<boardAttributes, "board_id">'.
                          Type 'TCreationAttributes' is not assignable to type 'Omit<boardAttributes, "board_id">'.
                            Type '{}' is missing the following properties from type 'Omit<boardAttributes, "board_id">': 

[steveschmitt]

Thanks for finding this. Do you have an idea for the fix? What should the sequelize-auto output be for your model?

One work around is to use the model name (string) instead:

 through: 'job_auction_designated',