如何用 jest 模拟 angular/node 第三方模块

Question

我正在尝试模拟整个ng-inline-svg模块（这是一个第三方 angular 模块）。

我尝试将以下代码放入我的 jest 全局模拟文件中：

import { NgModule } from '@angular/core';

const ngInlineSvgBaseMock = jest.genMockFromModule('ng-inline-svg');

@NgModule()
class NgInlineSvgMockModule {
  public static forRoot = jest.fn();
}

ngInlineSvgBaseMock['InlineSVGModule'] = NgInlineSvgMockModule;

module.exports = ngInlineSvgBaseMock;

但我收到以下错误消息：

Jest encountered an unexpected token


    This usually means that you are trying to import a file which Jest cannot parse, e.g. it's not plain JavaScript.

 

    By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules".

    Here's what you can do:

     • To have some of your "node_modules" files transformed, you can specify a custom "transformIgnorePatterns" in your config.

     • If you need a custom transformation specify a "transform" option in your config.

     • If you simply want to mock your non-JS modules (e.g. binary assets) you can stub them out with the "moduleNameMapper" config option.

    You'll find more details and examples of these config options in the docs:

    https://jestjs.io/docs/en/configuration.html

    Details:

    C:\git2\xxx-ui\node_modules\ng-inline-svg\lib\index.js:1

    export { InlineSVGConfig } from './inline-svg.config';

    ^^^^^^     

    SyntaxError: Unexpected token 'export'

       9 |   public static forRoot = jest.fn();

      10 | }

    > 11 |

         | ^

      12 | ngInlineSvgBaseMock['InlineSVGModule'] = NgInlineSvgMockModule;

      13 |

      14 | module.exports = ngInlineSvgBaseMock;

      at Runtime._execModule (../../node_modules/jest-runtime/build/index.js:1179:56)

      at Object.<anonymous> (jest-globals.ts:11:32)

有人可以帮忙并提供有关如何使用 jest 来模拟整个第三方模块的提示吗？