reactjs - ReferenceError:窗口未定义。我开玩笑地将npm test运行到单元测试时遇到此错误

ReferenceError：窗口未定义。我开玩笑地将npm test运行到单元测试时遇到了此错误。错误来自以下代码导出功能。有人遇到这种错误并解决了吗？

import { createStore, applyMiddleware, compose, combineReducers } from 'redux';
import thunk from 'redux-thunk';

import rootReducer from '../modules/rootReducer';

    export function injectAsyncReducers(asyncReducers) {
  const injectReducers = Object.keys(asyncReducers).reduce((all, item) => {
    if (store.asyncReducers[item]) {
      delete all[item];
    }

    return all;
  }, asyncReducers);

  store.asyncReducers = Object.assign({}, store.asyncReducers, injectReducers);
  replaceReducers(rootReducer);
}

最佳答案

当您没有为jest使用正确的testEnviremoent配置时，通常会出现此错误，在这种情况下，它应该是jsdom（您可以在这里查看：https://github.com/tmpvar/jsdom）。您可以在package.json文件中进行配置，如下所示：

"jest": {"testEnvironment": "node"}

如果您使用的是create-react-app，则测试脚本应如下所示：

"test": "react-scripts test --env=jsdom"

或者，您可以在此处查看testEviroment配置的更多选项：https://facebook.github.io/jest/docs/en/configuration.html#testenvironment-string