traditional.ts

import { act } from 'react-dom/test-utils';
import { beforeEach } from 'vitest';
import { createWithEqualityFn as actualCreate } from 'zustand/traditional';

// a variable to hold reset functions for all stores declared in the app
const storeResetFns = new Set<() => void>();

// when creating a store, we get its initial state, create a reset function and add it in the set
const createImpl = (createState: any) => {
  const store = actualCreate(createState, Object.is);
  const initialState = store.getState();
  storeResetFns.add(() => store.setState(initialState, true));
  return store;
};

// Reset all stores after each test run
beforeEach(() => {
  act(() => {
    for (const resetFn of storeResetFns) {
      resetFn();
    }
  });
});

export const createWithEqualityFn = (f: any) => (f === undefined ? createImpl : createImpl(f));