[{
  id: 1,
  name: 'route1',
  routes: [{
    id: 1,
    path: '/home'
  }]
}]

@Entity()
export class Role {
  @PrimaryGeneratedColumn()
  public id: number

  ... some other columns

  @ManyToMany(type => Route, route => route.roles)
  public routes: Route[]
}

@Entity()
@Tree('materialized-path')
export class Route {
  @PrimaryGeneratedColumn()
  public id: number

  @TreeParent()
  public parent: Route

  @TreeChildren({ cascade: true })
  public children: Route[]

  @ManyToMany(type => Role, role => role.routes)
  @JoinTable()
  public roles: Role[]
}