test(i18n): 语言检测用例每个都从空存储开始，Node 22 下不再读到模块加载时缓存的英文

// @vitest-environment jsdom

import { describe, it, expect, vi, afterEach } from "vitest";

import { describe, it, expect, vi, afterEach, beforeEach } from "vitest";

import i18next from "i18next";

import LanguageDetector from "i18next-browser-languagedetector";

import { i18nOptions } from "./index";

  return instance;

}

// Importing ./index boots the app's own instance, which on some Node versions (22,

// which CI runs) caches jsdom's en-US in storage before the first test; a first

// visit starts from empty storage, and no test may inherit another's choice.

beforeEach(() => {

  localStorage.clear();

});

afterEach(() => {

  vi.restoreAllMocks();

});