// jest setup: polyfill structuredClone for fake-indexeddb
if (typeof globalThis.structuredClone !== 'function') {
  globalThis.structuredClone = (obj) => JSON.parse(JSON.stringify(obj));
}

// polyfill TextEncoder/TextDecoder for jsdom environment
if (typeof globalThis.TextEncoder === 'undefined') {
  const { TextEncoder: TE, TextDecoder: TD } = require('util');
  globalThis.TextEncoder = TE;
  globalThis.TextDecoder = TD;
}
if (typeof globalThis.TextDecoder === 'undefined') {
  const { TextDecoder: TD } = require('util');
  globalThis.TextDecoder = TD;
}

// polyfill WebCrypto (crypto.subtle) — jsdom 仅提供 getRandomValues
if (typeof globalThis.crypto === 'undefined' || typeof globalThis.crypto.subtle === 'undefined') {
  const { webcrypto } = require('crypto');
  globalThis.crypto = webcrypto;
  // jsdom 环境暴露 getRandomValues 的旧引用可能被覆盖，统一替换
  Object.defineProperty(globalThis, 'crypto', {
    value: webcrypto,
    writable: true,
    configurable: true,
  });
}