意外的令牌导出jest angular

我读了很多关于这个问题的帖子,但我不明白如何修复它.我尝试了很多解决方案,但仍然存在错误.

Details:

    /home/work/project/node_modules/ngx-cookie-service/index.js:1
    ({"Object.<anonymous>":function(module,exports,require,__dirname,__filename,global,jest){export * from './cookie-service/cookie.service';
                                                                                             ^^^^^^

    SyntaxError: Unexpected token export

      15 |         this.sessionStorage = sessionStorage;
      16 |         this.localStorage = localStorageService;
    > 17 |         this.cookieService = cookieService;
         |                              ^
      18 |     }
      19 |
      20 |     public set(key,value,useSessionStorage = true) {

      at ScriptTransformer._transformAndBuildScript (node_modules/jest-runtime/build/script_transformer.js:403:17)
      at Object.<anonymous> (src/myApp/coreModule/services/storageLayer.service.ts:17:30)
      at Object.<anonymous> (src/myApp/itemmodule/components/category.component.ts:30:32)

所以我把它添加到我的package.json：

"jest": {
    "transformIgnorePatterns": [
      "node_modules/(?!ngx-cookie-service)"
    ]
  }

问题仍然存在.有人可以帮忙吗？我应该使用“moduleNameMapper”来模拟ngx-cookie-service吗？

非常感谢你 ！

解决方法

我刚刚找到了解决这个问题的方法.

>在node_modules所在的根文件夹中添加一个文件夹__mocks__.
>在__mocks__文件夹中添加ngx-cookie-service.js文件并放置以下代码：

class MockCookieService {
  constructor() {
    this._cookieReg = {};
  }
  check(name) {
    return this._cookieReg[name] ? true : false;
  }
  get(name) {
    return this._cookieReg[name];
  }
  getAll() {
    return this._cookieReg;
  }
  set(
    name,expires,path,domain,secure,sameSite
  ) {
    this._cookieReg[name] = name + '=' + value;
  }
  delete(name,domain) {
    delete this._cookieReg[name];
  }
  deleteall(path,domain) {
    this._cookieReg = {};
  }
}

module.exports = {
  CookieService: MockCookieService
};

>现在在实际的组件规范文件中,放置以下代码：

import { CookieService } from 'ngx-cookie-service';
jest.genMockFromModule('ngx-cookie-service');
Testbed.configureTestingModule({
  declarations: [Your-Component],providers: [CookieService]
})

>现在运行jest,测试运行正常.