How do I type a stor if _GettersTree is marked as for internal use only?

[Azema4ka]

The Problem

I used version 2.0.0-rc.15, and there the GettersTree type was not marked as for internal use only. After upgrading to version 2.0.0 the GettersTree type became _GettersTree, how should I better type the store?

Example of using the store with version 2.0.0

interface State extends StateTree {
  list: Apartment[];
}

interface Getters extends GettersTree<State> {
  getById(state: State): (id: string) => Apartment | undefined;
}

export const useApartmentsStore = defineStore<"apartments-pinia", State, Getters>(
  "apartments-pinia",
  {
    state(): State {
      return {
        list: [],
      };
    },
    getters: {
      getById: (state) => (id) => state.list.find((apartment) => apartment.id === id),
    },
  }
);

[BenShelton]

TS can infer the types without you having to specify them all. This should be all you need:

interface State {
  list: Apartment[];
}

export const useApartmentsStore = defineStore(
  "apartments-pinia",
  {
    state: (): State => ({
      list: [],
    }),
    getters: {
      getById: (state) => (id: string) => state.list.find((apartment) => apartment.id === id),
    },
  }
);

I also converted the state function to an arrow function as it improves type safety for some, see https://pinia.esm.dev/core-concepts/state.html#state

[Azema4ka]

TS can infer the types without you having to specify them all. This should be all you need:

interface State {
  list: Apartment[];
}

export const useApartmentsStore = defineStore(
  "apartments-pinia",
  {
    state: (): State => ({
      list: [],
    }),
    getters: {
      getById: (state) => (id: string) => state.list.find((apartment) => apartment.id === id),
    },
  }
);

I also converted the state function to an arrow function as it improves type safety for some, see https://pinia.esm.dev/core-concepts/state.html#state

Thank you for your time, your reply was very helpful to me 😘

[BenShelton]

Happy to help, do you mind marking this as the correct answer so others can benefit too? Thanks 😃

[Azema4ka]

Happy to help, do you mind marking this as the correct answer so others can benefit too? Thanks 😃

Yes, of course.