api/web/store/modal.ts

import { useToggle } from '@vueuse/core';
import { defineStore, createPinia, setActivePinia } from 'pinia';

/**
 * @see https://stackoverflow.com/questions/73476371/using-pinia-with-vue-js-web-components
 * @see https://github.com/vuejs/pinia/discussions/1085
 */
setActivePinia(createPinia());

export const useModalStore = defineStore('modal', () => {
  const modalVisible = ref<boolean>(true);

  const modalHide = () => { modalVisible.value = false; };
  const modalShow = () => { modalVisible.value = true; };
  const modalToggle = useToggle(modalVisible);

  return {
    modalVisible,
    modalHide,
    modalShow,
    modalToggle,
  };
});