How are people dealing with circular dependencies?

I have models define in separate files that reference each other. Is there a way to deal with circular dep issues without combining the models into one file?

import { Table, Column, Model, HasOne } from 'sequelize-typescript';
import User from './User.model';

@Table({ timestamps: true })
export default class Post extends Model {
  @HasOne(() => User)
  author!: User;

  @Column
  title!: string;

  @Column
  content!: string;
}

import { Table, Column, Model, HasMany } from 'sequelize-typescript';
import Post from './Post.model';

@Table({ timestamps: true })
export default class User extends Model {
  @Column
  name!: string;

  @HasMany(() => Post)
  posts!: Post[];
}

[mschipperheyn]

IMHO the code below should be adjusted to help avoid the need for recursive imports:

private associateModels(models: ModelCtor[]): void {
    models.forEach((model) => {
      const associations = getAssociations(model.prototype);

      if (!associations) return;

      associations.forEach((association) => {
        const options = association.getSequelizeOptions(model, this);
        // const associatedClass = this.model(association.getAssociatedClass());
        
        // should become
        const associatedClass = this.model(association.getAssociatedClass(models));
        
        if (!associatedClass.isInitialized) {
          throw new ModelNotInitializedError(
            associatedClass,
            `Association between ${associatedClass.name} and ${model.name} cannot be resolved.`
          );
        }
        model[association.getAssociation() as any](associatedClass, options as any);
      });
    });
  }

So that

import Company from './Company';
[...]
@BelongsTo(() => Company, {
    foreignKey: 'companyId',
    as: 'company',
})
public company!: Company;

becomes

@BelongsTo((models) => models.Company, {
    foreignKey: 'companyId',
    as: 'company',
})
public company!: Company;

[mschipperheyn]

@RobinBuschmann I took an initial stab at this. Would be great if someone could give me some feedback on whether this is a good idea or not: https://github.com/mschipperheyn/sequelize-typescript/commit/89bbef67201394d2fe4d832a8e2e8c4565e67bb7