Why do I get "Avoid referencing unbound methods which may cause unintentional scoping of `this`. eslint@typescript-eslint/unbound-method" in this case?

I’m using Svelte 3, Typescript and this code:

• loginStore.ts:

import { writable } from "svelte/store";

const store = () => {
  const state = {
    isLoggedIn: false,
  };

  const { subscribe, update } = writable(state); // warning: Avoid referencing unbound methods which may cause unintentional scoping of `this`. eslint@typescript-eslint/unbound-method (2 times)

  const methods = {
    OnInit() {
      this.Login(); // warning: Unsafe member access .Login on an any value. eslint@typescript-eslint/no-unsafe-member-access and another warning: Unsafe call of an any typed value. eslint@typescript-eslint/no-unsafe-call
    },

    Login() {
      if (window.localStorage.isLoggedIn) {
        update(() => {
          state.isLoggedIn = true;
          return state;
        });
      }
    },

    async Logout() {
      await doLogout();
      update(() => {
        state.isLoggedIn = false;
        return state;
      });
    },
  };

  return {
    subscribe,
    ...methods,
  };
};

export default store();

But @typescript-eslint is giving me these errors:

1. Avoid referencing unbound methods which may cause unintentional scoping of this 2 times on line:

   const { subscribe, update } = writable(state)
   

2. Unsafe member access .Login on an any value on line:

   this.Login()
   

3. Unsafe call of an any typed value on line:

   this.Login()
   

How can I fix these warnings?