How to use ForcedSubject in CASL

Question

I am following CASL's cookbook on implementing authorization for roles with predfined permissions (see here) and I am blocked when I try to check abilities for a user.

I do not understand how ForcedSubject is meant to be used. I do not which to use classes or interfaces to define my subjects so I therefore rely on strings. However, all my subjects do contain a id property and I want the ability to check permissions with conditionals on that ID. Bellow is a simplified version of what I implemented.

import { Ability, AbilityClass, ForcedSubject } from '@casl/ability';

type OrgActions =
  | 'manage'
  | 'invite-user';

type SubjectWithId = { id: string };
type MyAbilities =
  | ['manage', 'all']
  | [OrgActions, 'organization' | ForcedSubject<SubjectWithId>];

export type MyAbility = Ability<MyAbilities>;
export const MyAbility = Ability as AbilityClass<MyAbility>;


const builder = new AbilityBuilder(PlatformAbility)
builder.can('invite-user', 'organization', { id: 'abcd' })

const ability = builder.build()
ability.can('invite-user', 'organization') // No problem here
ability.can('invite-user', subject('organization', { id: 'abcd' }) // Typing Error!

Here is the typing error I get.

Argument of type '["invite-user", { id: string; } & ForcedSubject<"organization">]' is not assignable to parameter of type '[action: "manage", subject: "all", field?: string | undefined] | [action: OrgActions, subject: "organization" | ForcedSubject<SubjectWithId>, field?: string | undefined]'.
  Type '["invite-user", { id: string; } & ForcedSubject<"organization">]' is not assignable to type '[action: OrgActions, subject: "organization" | ForcedSubject<SubjectWithId>, field?: string | undefined]'.
    Type at position 1 in source is not compatible with type at position 1 in target.
      Type '{ id: string; } & ForcedSubject<"organization">' is not assignable to type '"organization" | ForcedSubject<SubjectWithId>'.
        Type '{ id: string; } & ForcedSubject<"organization">' is not assignable to type 'ForcedSubject<SubjectWithId>'.
          Types of property '__caslSubjectType__' are incompatible.
            Type 'string' is not assignable to type 'SubjectWithId'.ts(2345)

I do not understand how the ForceSubject type is supposed to be used if not with the subject helper like I did.